In Reply to: Proof of adaption (more) posted by Preston on May 12, 1999 at 18:28:51:
Yes... I think that the ECU registered the improved air flow and adapted to it... More HP was the end result. Since I have easy access to the dyno, I get it done quite often, just to monitor this "adaptation". The only difference I've ever seen from 1 week to the next with NO mods done to the car is 2-3 hp. Whenever I do a mod, there are more substantial gains. There are of course other factors... Temperature, barometric pressure etc..
One Question, What HP numbers have others been getting with similar mods? I thought 234 hp at the wheels was pretty OK.
: There is no way a cone filter is giving you that advantage. I would guess that adaption is playing a big role in your gains.
: The HP numbers seem very odd, on the low side for a Jim C, pulleys, etc. engine by about 20 HP.
: Are you clearing your O2 sensors before each run?