Whats it gonna take??
Whats it gonna take?? Ok well I finally made it back to the dyno on Monday, after installing a FAST intake/tb a cut-out, and an NX wet MAF kit. I decided to get the car tuned this time aswell. The car just came out of the shop after having a beefy transmission built, and I was all excited to get the car with all these goodies onto the dyno in order to achieve my goal of approx 400hp/400tq N/A to the rear wheels. Attached is my dyno sheet with and without nitrous (red is motor blue is nitrous), and now it leaves me to wonder. WHATS IT GONNA TAKE?
I mean, by the looks of things, even with some very stout heads, Id have a hard time breaking the 400 mark!! How is that possible? I almost feel like trading the car in. Ive spent alot of money on mods, and enough on tunning. These are numbers Ive seen from mild bolt on cars. I have basically full bolt ons and I cant even break the 350rwhp mark? Cause as you can see, my peak tq number is just a spike is what Im guessing. Let alone my torque numbers, whats the deal there? Thats disgusting. *sigh*
Now it was a shitty day, there was no one else in line to dyno cause no one in their right mind was going to get their car dyno'd on a day with the weather conditions like that. It was over 97* and 21 to 25% humidity. The car at one point pretty much overheated on the dyno too. I am thinking about getting a 160* t-stat shortly. I am pretty sure these numbers are adjusted according to the temp/conditions, but could this still have affected my numbers at all?
Also, for the nitrous run I put the 100hp jets and from what the sheet says, I gained bout 70hp and almost 90ft/lbs too the wheels, and judging by the spiked hp number, its really like almost 80hp and 90tq. So the nitrous is doing its job, and the dyno is working fine. The bottle pressure was between 1100-1200psi, so no worries there.
This is the part where I'll ask other peoples opinions, from my mods listed in my sig, should I not be making very close to 400/400 with a tune? Ive run out of stuff to do besides heads, and Im becoming very unwilling to do that cause its quite the chunk of change if its not gonna change anything for me.
Could there still be more left on the table in the tune, or is this just as good as its going to get? I think the A/F according to one of the dyno sheets was a fairly steady 13:1, I could be wrong tho.
Just FYI these numbers are unlocked from what I was told.
I mean, by the looks of things, even with some very stout heads, Id have a hard time breaking the 400 mark!! How is that possible? I almost feel like trading the car in. Ive spent alot of money on mods, and enough on tunning. These are numbers Ive seen from mild bolt on cars. I have basically full bolt ons and I cant even break the 350rwhp mark? Cause as you can see, my peak tq number is just a spike is what Im guessing. Let alone my torque numbers, whats the deal there? Thats disgusting. *sigh*
Now it was a shitty day, there was no one else in line to dyno cause no one in their right mind was going to get their car dyno'd on a day with the weather conditions like that. It was over 97* and 21 to 25% humidity. The car at one point pretty much overheated on the dyno too. I am thinking about getting a 160* t-stat shortly. I am pretty sure these numbers are adjusted according to the temp/conditions, but could this still have affected my numbers at all?
Also, for the nitrous run I put the 100hp jets and from what the sheet says, I gained bout 70hp and almost 90ft/lbs too the wheels, and judging by the spiked hp number, its really like almost 80hp and 90tq. So the nitrous is doing its job, and the dyno is working fine. The bottle pressure was between 1100-1200psi, so no worries there.
This is the part where I'll ask other peoples opinions, from my mods listed in my sig, should I not be making very close to 400/400 with a tune? Ive run out of stuff to do besides heads, and Im becoming very unwilling to do that cause its quite the chunk of change if its not gonna change anything for me.
Could there still be more left on the table in the tune, or is this just as good as its going to get? I think the A/F according to one of the dyno sheets was a fairly steady 13:1, I could be wrong tho.
Just FYI these numbers are unlocked from what I was told.
Last edited by aNuBiS; Jun 15, 2005 at 02:04 AM.
TECH Regular
Joined: Feb 2002
Posts: 444
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From: Tomball
Im guessing you tuned the car with HP tuners? Also you till missing an underdrive pulley...Not sure what else to tell you...I saw a MTI g1 cam (228/232) 114 lsa in a a4 with a 3500 converter locked put down 403 to the wheels so your definatly missing some power, Do you have the FAST 90/90 or the Fast 78/78? All dynos are different as well so I wouldnt set your self on that...Take it to the track and see what it does...
We need lots more information here.
Did you get a graph of, or even hear what your wideband O2 readings were?
Do you have any datalogs of WOT runs? What's your WOT timing?
Any knock retard? What were your injectors doing? O2 sensor voltages?
At WOT there's only so many factors. If you're getting the air, the fuel, and the timing right, you should hit close to your target.
Did you get a graph of, or even hear what your wideband O2 readings were?
Do you have any datalogs of WOT runs? What's your WOT timing?
Any knock retard? What were your injectors doing? O2 sensor voltages?
At WOT there's only so many factors. If you're getting the air, the fuel, and the timing right, you should hit close to your target.
Originally Posted by White 02 WS6
Im guessing you tuned the car with HP tuners? Also you till missing an underdrive pulley...Not sure what else to tell you...I saw a MTI g1 cam (228/232) 114 lsa in a a4 with a 3500 converter locked put down 403 to the wheels so your definatly missing some power, Do you have the FAST 90/90 or the Fast 78/78? All dynos are different as well so I wouldnt set your self on that...Take it to the track and see what it does...
Yeh, the tuner tuned it with HP tuners. I wouldnt think a pulley would give me huge power, but I am considering it. Yeh, thats one of my concerns, is that from what Im told my dyno's youre looking at are both unlocked. I have a FAST 78/78. Which on a 1999, should be a huge improvement over an LS1 intake. It should atleast be equivalent to an LS6 intake. Yeh, its track time Friday, so that will be my real test. You'll see me post about it when I get back, and I hope Im not dissapointed.
Originally Posted by V-10 Killer
We need lots more information here.
Did you get a graph of, or even hear what your wideband O2 readings were?
Do you have any datalogs of WOT runs? What's your WOT timing?
Any knock retard? What were your injectors doing? O2 sensor voltages?
At WOT there's only so many factors. If you're getting the air, the fuel, and the timing right, you should hit close to your target.
Did you get a graph of, or even hear what your wideband O2 readings were?
Do you have any datalogs of WOT runs? What's your WOT timing?
Any knock retard? What were your injectors doing? O2 sensor voltages?
At WOT there's only so many factors. If you're getting the air, the fuel, and the timing right, you should hit close to your target.
Here is a chart of A/F I was given for the nitrous run. Its the same as the motor run, or atleast very similar.
Launching!
Joined: May 2003
Posts: 290
Likes: 0
From: Canadian West Coast
Do you have the graph in RPM and not MPH? Wouldn't make a big differrence as everything looks ok there for a 3.23 geared A4. HP curve often gets a little bumpy at peak hp if a little rich, or plugs working hard. If I am reading your A/F right, you are rich at 12.2 or so.
Big question is how do other cars dyno on that dyno? I see your CF is about 1.04, so that definitely suggests that your weather is harsh right now, and that driving on the road you'd actually see about 4 % less rwhp than what the dyno shows (actual is less than corrected). But does this dyno read low?
Also, where in Canada are you?
Big question is how do other cars dyno on that dyno? I see your CF is about 1.04, so that definitely suggests that your weather is harsh right now, and that driving on the road you'd actually see about 4 % less rwhp than what the dyno shows (actual is less than corrected). But does this dyno read low?
Also, where in Canada are you?
Originally Posted by Camaro ChriSS
Do you have the graph in RPM and not MPH? Wouldn't make a big differrence as everything looks ok there for a 3.23 geared A4. HP curve often gets a little bumpy at peak hp if a little rich, or plugs working hard. If I am reading your A/F right, you are rich at 12.2 or so.
Big question is how do other cars dyno on that dyno? I see your CF is about 1.04, so that definitely suggests that your weather is harsh right now, and that driving on the road you'd actually see about 4 % less rwhp than what the dyno shows (actual is less than corrected). But does this dyno read low?
Also, where in Canada are you?
Big question is how do other cars dyno on that dyno? I see your CF is about 1.04, so that definitely suggests that your weather is harsh right now, and that driving on the road you'd actually see about 4 % less rwhp than what the dyno shows (actual is less than corrected). But does this dyno read low?
Also, where in Canada are you?
It mighta been rich during the nitrous run, I believe it was a bit less on the N/A pull. I'll be able to verify that when I do some logs of runs with HP Tuners. Im not sure how this dyno reads, I have yet to talk to anyone else who's dynod on it. I am in Ontario.
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Joined: Apr 2005
Posts: 1,338
Likes: 0
From: upstate ny
Originally Posted by aNuBiS
Ok well I finally made it back to the dyno on Monday, after installing a FAST intake/tb a cut-out, and an NX wet MAF kit. I decided to get the car tuned this time aswell. The car just came out of the shop after having a beefy transmission built, and I was all excited to get the car with all these goodies onto the dyno in order to achieve my goal of approx 400hp/400tq N/A to the rear wheels. Attached is my dyno sheet with and without nitrous (red is motor blue is nitrous), and now it leaves me to wonder. WHATS IT GONNA TAKE?
I mean, by the looks of things, even with some very stout heads, Id have a hard time breaking the 400 mark!! How is that possible? I almost feel like trading the car in. Ive spent alot of money on mods, and enough on tunning. These are numbers Ive seen from mild bolt on cars. I have basically full bolt ons and I cant even break the 350rwhp mark? Cause as you can see, my peak tq number is just a spike is what Im guessing. Let alone my torque numbers, whats the deal there? Thats disgusting. *sigh*
Now it was a shitty day, there was no one else in line to dyno cause no one in their right mind was going to get their car dyno'd on a day with the weather conditions like that. It was over 97* and 21 to 25% humidity. The car at one point pretty much overheated on the dyno too. I am thinking about getting a 160* t-stat shortly. I am pretty sure these numbers are adjusted according to the temp/conditions, but could this still have affected my numbers at all?
Also, for the nitrous run I put the 100hp jets and from what the sheet says, I gained bout 70hp and almost 90ft/lbs too the wheels, and judging by the spiked hp number, its really like almost 80hp and 90tq. So the nitrous is doing its job, and the dyno is working fine. The bottle pressure was between 1100-1200psi, so no worries there.
This is the part where I'll ask other peoples opinions, from my mods listed in my sig, should I not be making very close to 400/400 with a tune? Ive run out of stuff to do besides heads, and Im becoming very unwilling to do that cause its quite the chunk of change if its not gonna change anything for me.
Could there still be more left on the table in the tune, or is this just as good as its going to get? I think the A/F according to one of the dyno sheets was a fairly steady 13:1, I could be wrong tho.
Just FYI these numbers are unlocked from what I was told.
I mean, by the looks of things, even with some very stout heads, Id have a hard time breaking the 400 mark!! How is that possible? I almost feel like trading the car in. Ive spent alot of money on mods, and enough on tunning. These are numbers Ive seen from mild bolt on cars. I have basically full bolt ons and I cant even break the 350rwhp mark? Cause as you can see, my peak tq number is just a spike is what Im guessing. Let alone my torque numbers, whats the deal there? Thats disgusting. *sigh*
Now it was a shitty day, there was no one else in line to dyno cause no one in their right mind was going to get their car dyno'd on a day with the weather conditions like that. It was over 97* and 21 to 25% humidity. The car at one point pretty much overheated on the dyno too. I am thinking about getting a 160* t-stat shortly. I am pretty sure these numbers are adjusted according to the temp/conditions, but could this still have affected my numbers at all?
Also, for the nitrous run I put the 100hp jets and from what the sheet says, I gained bout 70hp and almost 90ft/lbs too the wheels, and judging by the spiked hp number, its really like almost 80hp and 90tq. So the nitrous is doing its job, and the dyno is working fine. The bottle pressure was between 1100-1200psi, so no worries there.
This is the part where I'll ask other peoples opinions, from my mods listed in my sig, should I not be making very close to 400/400 with a tune? Ive run out of stuff to do besides heads, and Im becoming very unwilling to do that cause its quite the chunk of change if its not gonna change anything for me.
Could there still be more left on the table in the tune, or is this just as good as its going to get? I think the A/F according to one of the dyno sheets was a fairly steady 13:1, I could be wrong tho.
Just FYI these numbers are unlocked from what I was told.
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Originally Posted by nasty99WS6
My car put down a corrected 374 rwhp, also unlocked, with the mods in my sig. From what I hear, a4's are "challenged" hitting that 400rwhp mark. But, I have seen a bunch of people do it. I am just not one of them. I guess the track will be the true test for you. FWIW, my car performed similar to yours at the track. Mine put down a 12.7 @ 109(before the ls6 intake and tune though) with a horrible 2.1 60 ft. your not alone.
Yeh the track friday will be my true test. If I dont get any better times than I did since my last time out, ill be upset. Thanks for your imput.
TECH Resident
Joined: Aug 2002
Posts: 909
Likes: 2
From: La.
Your nitrous dynoed kinda low IMO. If you went by the chart NX gave you on the 100 hp jets, then that;s why. The chart is wrong. Instead of a 31 fuel, you need to run a 28. 31 is for a 125 shot. Hope this helps your nitrous #s.
Originally Posted by toxic99
Your nitrous dynoed kinda low IMO. If you went by the chart NX gave you on the 100 hp jets, then that;s why. The chart is wrong. Instead of a 31 fuel, you need to run a 28. 31 is for a 125 shot. Hope this helps your nitrous #s.
aha.... I just solved what I figure is the majority of my problem. The car feels like a million bucks now. Went cruising around with a buddy and my HP Tuners, he noticed the TP% was only hitting 78%, so he asked me if I was putting my foot to the floor, I said ya why? Hes like the TP reading is only show 78% here. So we parked, turned of the car, I leaned on the pedal as hard as I could and only hit 80% open. Opened the hood, moved the throttle cable linkage back as far as I could get it, and it went to 77%. It was bumping up against a bolt hold that extrudes on the intake. So basically, I was running on the dyno at only 3/4 throttle!! That would explain the low dyno numbers, and would explain why even the nitrous numbers were low. So I called FAST, and spoke to somone there who claims theyve never heard of that before. I somehow doubt I am the first and only person this has occured to. Anyway, I grinded off the area where it was touching, managed to get 100%, and now its a new car! I knew it felt slugish, and seem'd like it was less car than what it was before the recent parts install and dyno/tune. So If I had the converter locked and the other 1/4 of my throttle open I should have a respectable number. Either way, its track time this weekend so I will have some 1/4 mile numbers and hopefully those will be a reflection of what the car really has in it. I hope my tune isnt off now because of this fiasco, cause it was tuned and dyno'd at the shop with this happening.
Also, I noticed that my nitrous fuel solenoid (NOS brand) had a decent steady drip comming from one of the two holes on the bottom of it while on the dyno and I removed at the same time as I fixed the throttle body problem. I figure it might of been causing me to have lower fuel pressure aswell.
https://ls1tech.com/forums/generation-iii-external-engine/337561-fast-intake-tb-issues.html
Also, I noticed that my nitrous fuel solenoid (NOS brand) had a decent steady drip comming from one of the two holes on the bottom of it while on the dyno and I removed at the same time as I fixed the throttle body problem. I figure it might of been causing me to have lower fuel pressure aswell.
https://ls1tech.com/forums/generation-iii-external-engine/337561-fast-intake-tb-issues.html
Originally Posted by 92SilverSHO
kinda off subject here, but where did you get your user name from? where in Canada are you at? im guessing the toronto area
Originally Posted by aNuBiS
I just solved what I figure is the majority of my problem. The car feels like a million bucks now. Went cruising around with a buddy and my HP Tuners, he noticed the TP% was only hitting 78%, so he asked me if I was putting my foot to the floor, I said ya why? Hes like the TP reading is only show 78% here. So we parked, turned of the car, I leaned on the pedal as hard as I could and only hit 80% open. Opened the hood, moved the throttle cable linkage back as far as I could get it, and it went to 77%. It was bumping up against a bolt hold that extrudes on the intake. So basically, I was running on the dyno at only 3/4 throttle!! That would explain the low dyno numbers, and would explain why even the nitrous numbers were low. So I called FAST, and spoke to somone there who claims theyve never heard of that before. I somehow doubt I am the first and only person this has occured to. Anyway, I grinded off the area where it was touching, managed to get 100%, and now its a new car! I knew it felt slugish, and seem'd like it was less car than what it was before the recent parts install and dyno/tune. So If I had the converter locked and the other 1/4 of my throttle open I should have a respectable number. Either way, its track time this weekend so I will have some 1/4 mile numbers and hopefully those will be a reflection of what the car really has in it. I hope my tune isnt off now because of this fiasco, cause it was tuned and dyno'd at the shop with this happening.
Also, I noticed that my nitrous fuel solenoid (NOS brand) had a decent steady drip comming from one of the two holes on the bottom of it while on the dyno and I removed at the same time as I fixed the throttle body problem. I figure it might of been causing me to have lower fuel pressure aswell.
https://ls1tech.com/forums/showthread.php?t=337561
Also, I noticed that my nitrous fuel solenoid (NOS brand) had a decent steady drip comming from one of the two holes on the bottom of it while on the dyno and I removed at the same time as I fixed the throttle body problem. I figure it might of been causing me to have lower fuel pressure aswell.
https://ls1tech.com/forums/showthread.php?t=337561
glad u caught it right off the bat! Hopefully you can run that car @ 100% of its potential now 
hrmph
Originally Posted by toxic99
Good luck with the track #s. Glad to see you got it worked out.https://ls1tech.com/forums/generation-iii-external-engine/338367-come-see-what-i-found.html