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Message: <blockquote data-quote="KL2DC" data-source="post: 169352" data-attributes="member: 3452">Vishnu engineering out of California has started to do some tinkering. In their preliminary look under the hood they found: 1) The car doesn't have a MAF sensor. Instead it calculates load from 2 MAP sensors. One a few inches upstream of the throttle body and one in the intake manifold. The former actually being a T-MAP sensor (a MAP sensor which incorporates a temp sensor in one sensor body). Pretty neat stuff. I've read about this but have yet to see it any car first-hand.2) Fuel rail pressure varies as a function of engine load. It can go as low as a few hundred psi to as high as 3000psi! 3) The crank trigger is still a 60-2 toothed wheel. They did not change over to the asymetric trigger configuration that is becoming popular lately for their multiple reference points (a plus when it comes to misfire diagnostics.)With minor timing, fuel and boost tweaks and regular grade gas they found: "The gains were greatest at higher engine speeds. At 7000rpm, it picked up nearly 70whp with richer-than-stock A/F ratio. Peak WHP increased from 278 to 310whp at 6000rpm. Torque from 288lb-ft to 311lb-ft."</blockquote>