fine tuning the L67 toronado trofeo - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 03-05-2007, 09:02 PM   #11
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We've had our share of bad experiences with the AFC.

I can tell you from personal experience that you can't control your 36lb injectors with that tuning. Nor can you outflow the stock 29lb injectors the engine came with, nor can you even control THEM with the stock trofeo coding.

What MAF sensor are you running?
What exhaust manifolds are you running? Modified? Stock?
What did you do to the LIM?
What specifically did you do to the supercharger?
What FPR are you running?

To my knowledge, I'm the only person to have succesfully run a 2.0" pulley on a Gen3 M62, and I'm still on 29lb injectors with perfect fuel trims. And I can bet you that my top end flows alot more than yours. In fact, I'm improving that again right now.

Your biggest problem is the stock Trofeo PCM. You will get nowhere with that. If you're set on using it, you need to go back to at LEAST a 2.55" pulley, but probably more practical a 2.85" stock pulley for that Gen3 setup.

Did you upgrade your FPR and fuel pump?

I suspect your injectors are drooling instead of spraying efficiently. Because they're 36lb injectors AND the possibility of you not flowing enough supply flow and pressure to them, in spite of the fact that your Trofeo PCM doesn't know how to control them.
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Old 03-05-2007, 09:14 PM   #12
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well cosidering i can scan my motor while drive it with the 2.0" pully and i get 2 degrees of kr at most then i turn my spray on and it dissappears all together
i think the motor likes the big injectors and the smaller pulley
ive driven it with the 2.5" for 20,000 miles and had no problems
the car idles fine
and has absolutley no driveability issues and i still got 33mpg at 68mph all last summer
i dont think you know what a trofeo computer is capable of doing
i run a ported 95 throttle body wiht the LQ4 maf
the inlet on the */c is ported to match the tb
the exhaust is mildly ported
im running the 3 bar fpr
and i run about 45 psi for fuel pressure
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Old 03-05-2007, 09:19 PM   #13
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Can I please ask that you use some capitals and punctuation. It'* pretty tough to read with you typing like this is an instant message.
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Old 03-05-2007, 09:30 PM   #14
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Quote:
Originally Posted by superchargedtrofeo
well cosidering i can scan my motor while drive it with the 2.0" pully and i get 2 degrees of kr at most then i turn my spray on and it dissappears all together
i think the motor likes the big injectors and the smaller pulley
ive driven it with the 2.5" for 20,000 miles and had no problems
the car idles fine
and has absolutley no driveability issues and i still got 33mpg at 68mph all last summer
i dont think you know what a trofeo computer is capable of doing
i run a ported 95 throttle body wiht the LQ4 maf
the inlet on the */c is ported to match the tb
the exhaust is mildly ported
im running the 3 bar fpr
and i run about 45 psi for fuel pressure
Quote:
this summer i plan on running the 2.0 a LQ4 maf and a ported throttle body
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Old 03-05-2007, 10:00 PM   #15
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If you're getting 2 degrees of KR on a 2.5" pulley, why on EARTH are you even considering a 2.0" pulley, much less a 2.2" or 2.3"? You're at the limit due to KR already.

Larger injectors are NOT plug and play, you need custom tuning to make them work.
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Old 03-05-2007, 11:00 PM   #16
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you dont understand my car sits inside during winter and by run i mean starts
idles and scans fine from that aspect. i only drove the car for a week with the ported tb and larger maf and the 2.0" pulleywhich i dont consider running for a summer and from what i scanned then i saw no reason the setup would not perform better when it is nicer out (not 50 degrees) and i have some tuning done


all i wanted is some opinions on the setup and right away you act like im some stupid 16 year old kid with a jegs

thanks
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Old 03-05-2007, 11:25 PM   #17
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well cosidering i can scan my motor while drive it with the 2.0" pully and i get 2 degrees of kr at most then i turn my spray on and it dissappears all together




I believe thats what i said 2.0" NOT 2.5"
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Old 03-05-2007, 11:37 PM   #18
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If your car runs that good, what are you asking us for?
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Old 03-05-2007, 11:44 PM   #19
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Because it can always be better.

i cant believe you still run stock injectors with a 2.0" pulley
they have got to be near max pulse width under wot
36 lb/hr injectors are only good for up to 300 whp anyways
29 have got to be good for like 240 to 260 maybe?
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Old 03-06-2007, 12:08 AM   #20
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You must be one of those guys that thinks there'* power in larger injectors.

I run 29lb stock (flowmatched) injectors on a 2" pulley, and I don't run lean. Your 36lb injectors are not running right, and are gaining you nothing.
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