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Old 03-27-2007, 08:56 AM
Shawn96VR-4 Shawn96VR-4 is offline
Straight Line Warrior

 

Join Date: Jan 2005
Posts: 1,700
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Quote:
Originally Posted by JClark View Post
Centri s/c boost is just a linear climb. Pressure increases directly with blower speed, so max boost is at max rpm. Next time I'm in there, I'll start hunting for possible leaks.

Morgan and others have said the AFR is ok. It's not being strained at 13 and dips into 12 when it starts to build more power, which they said is just right. It's no where near knocking and the the dyno suggests it's running fine with it. When the motor was NA and super tweaked out, my AFR touched 14.3 at points and never knocked once even on 91 @ Watkins.

Car feels great overall. 1st and 2nd gear are useless now, but usually I only need 3rd+. Looking forward to warm weather so I can try it with some grip.
Nice. AFR is going to be leaner for a NA motor. Things get a bit different when you go FI. But, it's slowly going richer as the boost pressure increases. If all other things check out and the dyno curve looks good, then roll with it. When I maxed out my fuel pump, Cossey and I watched the AFR go from LOW 11 to 13 AFR and the TQ just took a dump.

Do I get a ride?
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