Took Dieter to MC Racing today and performed some pulls on their Dynojet 248 2WD dyno (I believe this is the same model that EIP uses).
Here's the before and after graph, showing today's best pull versus last year's baseline:
The only change to the car (other than the passage of time and more miles on the clock) since the baseline pull was the addition of the turbo and 3" exhuast. Again, EIP's claim was 310-315FWHP and I only got 296. I wonder what's up with that? Also note that EIP's air/fuel is not as rich as stock above 5700RPM....
Here are all 3 pulls from today:
The dyno operator said that the jagged nature of
the graph line indicates one of two things to him:
1) The knock sensors are kicking in and forcing the ECU to pull back timing, or
2) EIP's software is too conservative with the timing (which is ImagineAuto's
opinion as well).
He also said that the air/fuel mixture was not as rich as he would personally tune a car,
which ImagineAuto has also claimed.
I sent these results to Rich, so we'll see what he has to say about it.