It's been 5 days since we got our car. Fortunately, most of us here are a bit obsessive when it comes to digging into perfectly fine, brand new cars and seeing if we can come up with any newfound power. We're not anywhere close to being done. I still want to get control of the closed loop fuel targets, directly control the boost contol solenoids as well as interface with the vanos system. That's at least a few weeks out. So far, all we did was minor ignition timing, fuel and boost pattern tweaks. Even on our 91oct, I suspect there is still a good deal more power that can be safely extracted once we have finished this project. Once again, these results are just our first attempt at tuning this car. It does not represent a complete tune. It's just one step at a time.

Results:

The gains were greatest at higher engine speeds. At 7000rpm, we 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. I stayed nice and conservative at low to mid engine speeds (where, quite frankly, we should see the biggest gains when all is said and done). This was because I don't yet have control of the AFR targets in this region. The stock fuel mapping is too lean to run either the extra boost the turbos most certainly are capable of supporting, or optimal spark advance. Once we get control of the fuel in this region, we can start to turn up the wick and really get the sick midrange torque than the hardware is capable of supporting. For now, all we really wanted to do is make the car charge to redline instead of fall flat above 6000rpm. We did a little more than that but that was just an unexpected bonus. More to come in the next few weeks. Until then, it's back to testing.