Why does my bone-stock '02 automatic Z28 dyno only 280.9 rwhp @ 295.7 ft-lb.?!
12-04-2004, 09:36 PM
#21
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Finally, a properly-done A4 dyno! I drove 2 hours up to get to TT Performance where I got my factory plugs (at around 46,300 miles) replaced with brand-new NGK-TR55's. (The factory plugs were labeled DENSO, for your information and they didn't look bad at all, IMO) Taylor Thunderbolts were not in stock so I just had them use my factory plug wires. After the spark plug installation, the car was placed on the dyno jet. The agreement was that the car will be dynoed with air/fuel ratio monitoring. KR and timing will also be checked. The operator was Matt Sorian. 3 pulls were done with the first two pulls done back to back and the last pull made after a 5 minute cool down. Here were the results.
1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05
Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.
1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05
Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.
12-05-2004, 02:43 PM
#23
Like everybody has been saying, your power and times are dead on for a stock A4 - although that is an unusual bump for plugs alone!! My car is lid and catback and check out my et ... and I think I've got another two tenths with a good launch and if I can keep from going down the track sideways after the 1-2 shift! Nittos will solve these problems. Anyway, my point is, your car is pretty much right with mine.
12-06-2004, 05:10 PM
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Originally Posted by XLR8NSS
It looks decent but, that mph is kinda low IMO for those conditions. I'd expect 105-106mph or so. Have you ever scanned your car to see if there is any knock retard? I know when I'd get knock the car would lose a few mph on the top end. The humidity and full tank of gas didn't help either.
Other than that you are right in line for a stock car. Not to many stock A4 cars drop below 2.0 60's from what I've seen but, some do.
Other than that you are right in line for a stock car. Not to many stock A4 cars drop below 2.0 60's from what I've seen but, some do.
12-09-2004, 10:23 AM
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When i first dyno'd my car it wasnt stock. I had a 3400 stall, lid, cutout. I put down 290-316. So i figure that my car was around 290-300 stock power. Time to buy some more mods man. I added long tubes and ory and gained 20rwhp-25rwtq.
12-09-2004, 02:25 PM
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[ So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.[/QUOTE]
If you can get it to hook up with only a 1/4-1/3 tank of gas this might get you 60' times down to the 2.0 you're looking for. Also play with the way you launch the car. Mine with a good prepped track, 1/4 tank of gas, and launching it without footbraking and bringing the rpms up give me a 1.85 60' time with 26psi in goodyear eagle hp plus tires. My mods are in my sig. Nothing major though.
If you can get it to hook up with only a 1/4-1/3 tank of gas this might get you 60' times down to the 2.0 you're looking for. Also play with the way you launch the car. Mine with a good prepped track, 1/4 tank of gas, and launching it without footbraking and bringing the rpms up give me a 1.85 60' time with 26psi in goodyear eagle hp plus tires. My mods are in my sig. Nothing major though.
12-20-2004, 11:31 AM
#28
There's nothing wrong with your car. 13.5 @ 103 w/ 2.0 sixty foot for a bone stock A4 LS1 with a full tank of gas is fine. The only thing I don't understand is why your car started trapping 101 mph. Other than that there is nothing wrong. You'll be chasing a ghost if you think otherwise. JMO.
12-20-2004, 04:50 PM
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Originally Posted by damon_Z
I drove 2 hours up to get to TT Performance where I got my factory plugs (at around 46,300 miles) replaced with brand-new NGK-TR55's. (The factory plugs were labeled DENSO, for your information and they didn't look bad at all, IMO) Taylor Thunderbolts were not in stock so I just had them use my factory plug wires. After the spark plug installation, the car was placed on the dyno jet. The agreement was that the car will be dynoed with air/fuel ratio monitoring. KR and timing will also be checked. The operator was Matt Sorian. 3 pulls were done with the first two pulls done back to back and the last pull made after a 5 minute cool down. Here were the results.
1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05
Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.
1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05
Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.
best time was
13.407@103.98 with a 2.075 60 foot time
and best MPH was
13.585@104.82 with a 2.257 60 foot time.
At best, I think the car is capable of getting 13.2-13.3 @ 105-106 MPH completely bone-stock (meaning no performance modifications whatsoever). I do have a rear-end girdle and a tranny cooler.
12-20-2004, 11:03 PM
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Originally Posted by PewterZ28
There's nothing wrong with your car. 13.5 @ 103 w/ 2.0 sixty foot for a bone stock A4 LS1 with a full tank of gas is fine. The only thing I don't understand is why your car started trapping 101 mph. Other than that there is nothing wrong. You'll be chasing a ghost if you think otherwise. JMO.
To the starter of this thread- There's nothing wrong with your car. On that 13.5 pass you got things right, now go practice and duplicate those results.
08-03-2005, 07:51 PM
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my 00ss m6 came with 333/355 stock, if you are wondering why its lower its cause its a4 z28...its anywhere from 280-305 hp rated i believe, although that dip does look wierd your about in the middle, i knew a guy with a 98 z28 came stock with about 230... not all motors are the same, in my case i got 1 that pulled 333 which isnt bad but i have heard of 00ss's pullin 300 290, location is also a big contributing factor as well...if you want more power just sc it...works for me
08-03-2005, 07:55 PM
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Originally Posted by 68ss_00ss_87_95
my 00ss m6 came with 333/355 stock, if you are wondering why its lower its cause its a4 z28...its anywhere from 280-305 hp rated i believe, although that dip does look wierd your about in the middle, i knew a guy with a 98 z28 came stock with about 230... not all motors are the same, in my case i got 1 that pulled 333 which isnt bad but i have heard of 00ss's pullin 300 290, location is also a big contributing factor as well...if you want more power just sc it...works for me
Quote:
Originally Posted by damon_Z
I drove 2 hours up to get to TT Performance where I got my factory plugs (at around 46,300 miles) replaced with brand-new NGK-TR55's. (The factory plugs were labeled DENSO, for your information and they didn't look bad at all, IMO) Taylor Thunderbolts were not in stock so I just had them use my factory plug wires. After the spark plug installation, the car was placed on the dyno jet. The agreement was that the car will be dynoed with air/fuel ratio monitoring. KR and timing will also be checked. The operator was Matt Sorian. 3 pulls were done with the first two pulls done back to back and the last pull made after a 5 minute cool down. Here were the results.
1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05
Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.
I never updated this post with my new best quarter mile time and MPH. With the recently installed and brand-new NGK-TR55 spark plugs, running with only a quarter tank of gas, and 30-31 PSI air pressure on the stock 47,000 mile GSC's, here were my results:
best time was
13.407@103.98 with a 2.075 60 foot time
and best MPH was
13.585@104.82 with a 2.257 60 foot time.
At best, I think the car is capable of getting 13.2-13.3 @ 105-106 MPH completely bone-stock (meaning no performance modifications whatsoever). I do have a rear-end girdle and a tranny cooler.
Originally Posted by damon_Z
I drove 2 hours up to get to TT Performance where I got my factory plugs (at around 46,300 miles) replaced with brand-new NGK-TR55's. (The factory plugs were labeled DENSO, for your information and they didn't look bad at all, IMO) Taylor Thunderbolts were not in stock so I just had them use my factory plug wires. After the spark plug installation, the car was placed on the dyno jet. The agreement was that the car will be dynoed with air/fuel ratio monitoring. KR and timing will also be checked. The operator was Matt Sorian. 3 pulls were done with the first two pulls done back to back and the last pull made after a 5 minute cool down. Here were the results.
1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05
Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.
I never updated this post with my new best quarter mile time and MPH. With the recently installed and brand-new NGK-TR55 spark plugs, running with only a quarter tank of gas, and 30-31 PSI air pressure on the stock 47,000 mile GSC's, here were my results:
best time was
13.407@103.98 with a 2.075 60 foot time
and best MPH was
13.585@104.82 with a 2.257 60 foot time.
At best, I think the car is capable of getting 13.2-13.3 @ 105-106 MPH completely bone-stock (meaning no performance modifications whatsoever). I do have a rear-end girdle and a tranny cooler.
08-03-2005, 10:16 PM
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Originally Posted by SDC
This is true but the numbers seem exactly on to me. I mean most of the A4s in the 300rwhp range have a lid/catback. Believe it or not those two things will made a 10-20rwhp difference alone. Might even lean it out enough for your liking also.
Well the only 2 stock dynos of 02 SS cars I have seen both did 310 and 311 respectively. 1st one was Adam Sloans and the other was mine
. We both got our cars from the same dealership. That is the only frame of reference I have so I would say 300 - 315 would be a more normal stock dyno.
08-04-2005, 04:40 PM
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Originally Posted by ExceSSive
Well the only 2 stock dynos of 02 SS cars I have seen both did 310 and 311 respectively. 1st one was Adam Sloans and the other was mine . We both got our cars from the same dealership. That is the only frame of reference I have so I would say 300 - 315 would be a more normal stock dyno.
. We both got our cars from the same dealership. That is the only frame of reference I have so I would say 300 - 315 would be a more normal stock dyno.
08-06-2005, 06:05 AM
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Originally Posted by raymond mckinney
My 96 ss m6 did better than that bone stone! AND its just a little Lt-1. Don't feel bad 98' auto pull the same numbers stock I got so mad when my LT-1 pull on it everywhere!
08-06-2005, 05:07 PM
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Originally Posted by damon_Z
Before doing any mods, I'm gonna try a few more things. I'll use a GM Top Engine Cleaner to clean my combustion chamber and switch my worn out factory Delcos or NGK spark plugs to brand new TR-55's that I got as a gift a couple years ago. I'll do all my runs with the transmission engaged in D and not overdrive. And I'll try to run at only at least half tank of gas to save a little weight. I'm not going to dyno tune the car since it's only bone-stock, but I might do a final baseline dyno after all is said and done.
It won't make a difference whether the trans is in D or overdrive. The gear ratios and shift points are the same. The only difference is in D, the trans will stay in third gear and will not shift into overdrive. But, in the quarter mile, as long as the pedal is to the metal, it wont shift into overdrive in the overdrive position.
08-13-2005, 03:31 PM
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Originally Posted by jaberwaki
(a4's should 60' much better then 2.1)