|Here is the AMS Stage 2 Pro-Tune versus the Cobb off the shelf Stage 2 MAP. With AVCS tuning Mitch was able to make slightly more power under the curve. This makes for very fun street car.|
|Our stock baseline compared to current dyno. Never mind the before and after #'s. Let's look at 3700 RPM's. Peak gains of approximately 130LB FT of torque and 85 HP. Turbo cars are FUN!|
After living with the car for a few weeks at this power level it is quite fun to drive and has very usable power. The turbo comes on instantly yet it still pulls to redline. I DO notice that the STi likes to be short shifted or it seems that you fall past torque peak. We also have been using our trusty AccessPORT to data log and monitor things to make sure the AMS MAP is perfect. In logging with the AP one thing that we learned is that the stock wideband does not read below 11.0:1. After confirming this we have been monitoring Fine Knock learn and the car logs ZERO counts. We also noticed and confirmed with Mitch that when monitoring individual cylinder knock, cylinder 4 is the loudest and will log very high knock counts which is actually feedback. One theory is that this is turbulence in the intake manifold… So I guess we found the next things to address in making more power… Regardless of what comes next in power production the Cobb turbo back system is truly first rate kit. Are there cheaper alternatives? Yes… Do they perform as well… Some might… Will they last as long… EHH I wouldn't risk my money on that. With the extreme attention to every detail we deem this offering to be MotoIQ Certified Legit.
With the car's newfound power we are starting to notice the limit of the OEM suspension setup and quite honestly the steering feel is very vague, especially on center. We will be resolving these things and more as we continue to tweak Project STi…