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Final Pump gas numbers from FMS

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Old Nov 17, 2005 | 05:35 PM
  #21  
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Originally Posted by Futral Motorsports
GEEZ..Before everybody makes an"asumption" on things before they know all the facts.

MY dyno reads .7-.8 lean so the 12.6 A\F is actually 11.8-11.9 A\F. I can run this kind of A\F due to the combustion chamber design,cam design and the big *** intercoller up front along with the efficient turbo. The intake air temp is located in front of the T\B and in these dyno test only gets 5-10 deg over oustside temp. If I was to dyno at 11.0-11.2 I would be blowing out black smoke like a diesel. This motor was built as a pump gas setup from the beginning. My N\A motors make the best power at 13.8-14.0 on my A\F display.

Now this is JUST a dyno test for now and IS NOT the final tune for the customer!

Do any of you that preach 11.0-11.2 actually READ the spark plugs to see what is going on in the motor?
My appologies, I didnt mean to mislead everyone.

Now I know why its hard to post up results without everyone jumpin in

TTT
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Old Nov 17, 2005 | 05:44 PM
  #22  
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I run 12.4:1 to 12.6:1 a/f on every pass, at 13-14psi, with near stock compression. Plugs look great

Like Allan said, at 11:1 my car looks like a diesel going down the track, and runs like one too.

Thats some great numbers, congrats.
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Old Nov 17, 2005 | 05:45 PM
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NICE! Whats the altitude where you live in Arizona? Bout 3600ft or near there? Car will richen up nicely if the car is being tuned at or near sea level, and then brought back to Arizona with the same tune, so I wouldn't worry at all.

You gotta be stoked to have that beast headed your way
J
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Old Nov 17, 2005 | 06:07 PM
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Originally Posted by frcefed98
NICE! Whats the altitude where you live in Arizona? Bout 3600ft or near there? Car will richen up nicely if the car is being tuned at or near sea level, and then brought back to Arizona with the same tune, so I wouldn't worry at all.

You gotta be stoked to have that beast headed your way
J
I think its around 1400 or so at the track like 3 miles from my house, but the track prep sucks ***, and we have crappy 91 oct out here.

Ive been stoked for the past 1.3 years

Man, its been a long time waiting, but it sure as hell will be damn worth it.

I mean realistically, its a brand new car.

new motor
turbo kit
tubular k member
weld on sub frames
rebuilt tranny
new 12 bolt

He has surpassed what I had asked from the get go and I am very pleased with the setup, despite the wait.
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Old Nov 17, 2005 | 06:08 PM
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any guesses on what kind of crappy et's ill be running? and what about mph? I hope with my shitty as driving i can pull a 135+ outa there.
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Old Nov 17, 2005 | 06:20 PM
  #26  
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damn i'm jelous! cant wait to see some vids or that turbo spoolin up!
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Old Nov 17, 2005 | 06:32 PM
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Zombie, have you tested your theory on a/f from dyno to street? I have seen the opposite, 14:1 on a dynojet (plugs showing detonation too), 12.9:1 on the street and on a mustang dyno, all within 1 day of each other with no changes made to the car or tune.
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Old Nov 17, 2005 | 06:39 PM
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Originally Posted by Futral Motorsports
GEEZ..Before everybody makes an"asumption" on things before they know all the facts.

MY dyno reads .7-.8 lean so the 12.6 A\F is actually 11.8-11.9 A\F.
Now this is JUST a dyno test for now and IS NOT the final tune for the customer! Final street tuning is next.

Do any of you that preach 11.0-11.2 actually READ the spark plugs to see what is going on in the motor?
Glad to see that it's the wideband, I still tune richer extra safety, but the change in alt will solve most of that.

Yes, I read my spark plugs and the last set looked like a perfect burn, my car is tuned 11.0-11.2 and then I add meth on top of that for higher boost.

My car makes very little smoke tuned in the low 11 range, not even close to a diesel. If I run low 10's/9's a/f I get some good smoke though.

The reason for tuning on the rich side is it has very little effect on power and provides a lot of extra cusion fuel wise. Tuned 11.8:1 there is very little room for error. I never let my car go leaner than 11.5:1 on race gas. If it's tuned for 11.0 it will lean out to 11.4 if the gas i'm using has a really low specific gravity.

I'd like to see what this thing does on 20 psi
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Old Nov 17, 2005 | 06:46 PM
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Originally Posted by calongo_SS
Zombie, have you tested your theory on a/f from dyno to street? I have seen the opposite, 14:1 on a dynojet (plugs showing detonation too), 12.9:1 on the street and on a mustang dyno, all within 1 day of each other with no changes made to the car or tune.
Yes, I have tested it a few times with the same results. The difference you saw was due to being on a mustang dyno which is a load bearing dyno. Most dyno jets are not load bearing and just work off a fixed weight drum. Some new models have a load cell though which does allow the operator to control the load.

My car tuned 11.0 on the street in 4th gear will read 10.6 on the dyno. I've tuned several cars on the street to 12.5-7 a/f and had them dyno 12.2-3 on the dyno. N/A cars are not affected as much as turbo cars are is what i've seen.

I've also played with a/f on the dyno with my car and from 10.5 a/f to 11.3 a/f I only got a 15 rwhp gain which really surprised me, but I've repeated the results on a few other turbo cars in town here.
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Old Nov 17, 2005 | 06:56 PM
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Originally Posted by Zombie
Yes, I have tested it a few times with the same results. The difference you saw was due to being on a mustang dyno which is a load bearing dyno. Most dyno jets are not load bearing and just work off a fixed weight drum. Some new models have a load cell though which does allow the operator to control the load.
It makes sense to me that a mustang dyno wideband and a wideband on the street should read the same, as the mustang dyno will simulate real work driving conditions better than a dynojet. Why do you think I would see the opposite effect you do though? I go lean on a dynojet.
Sorry for the hijack, but I thought I had this figured out, and now I'm reading the opposite of what I thought.
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Old Nov 17, 2005 | 06:58 PM
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Is this on a stock PCM? I would really like to know. Are you using a 2 bar map or a 3 bar? Really nice numbers. I am really impressed with that.
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Old Nov 17, 2005 | 07:12 PM
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Originally Posted by JMBLOWNWS6
Is this on a stock PCM? I would really like to know. Are you using a 2 bar map or a 3 bar? Really nice numbers. I am really impressed with that.
3 bar on stock pcm

However once I get all the paperwork sorted through ill post up all mods that have been done.

lets just hope ls1tech's bandwith is large enough
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Old Nov 17, 2005 | 07:22 PM
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That is awesome. Have fun with the new setup! It should be a neck snapper!
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Old Nov 17, 2005 | 07:30 PM
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Originally Posted by JMBLOWNWS6
It should be a neck snapper!
haha, considering it has 700+tq at 4200 rpm.
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Old Nov 17, 2005 | 07:44 PM
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Awesome numbers .....sweet setup too. That thing is going to be tough. (make that IS tough)

Last edited by CrimeSScene; Nov 18, 2005 at 09:35 AM.
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Old Nov 17, 2005 | 10:13 PM
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I agree on FMS a/f being lean. When I got home and dyno'd my car the afr was 12.2 to 1. I am still running rich. I plan to leave it alone though.
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Old Nov 17, 2005 | 11:40 PM
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AGAIN futral surpases the customers expectations. allan is the best engine builder and tuner for these lsx motors bar none. absoulely insane numbers for this very streetable combination.
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Old Nov 18, 2005 | 05:31 AM
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ever think of putting crash bars on to prevent damage to your hotparts?
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Old Nov 18, 2005 | 06:33 AM
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Originally Posted by Futral Motorsports
GEEZ..Before everybody makes an"asumption" on things before they know all the facts.
What assumptions? The guy clearly said 12.6 A/F. Nobody knew any different until your post. They are just trying to help save a bud from a potential problem.
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Old Nov 18, 2005 | 07:28 AM
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So you are going to do some C16 pulls on higher boost... awsome..... i knew there was a reason. Thanks Allen for clearing it up for everyone.
Kyle
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