Originally Posted by Freon
Well, comparing the EU and USDM to the JDM maps, I have to wonder if there are emissions concerns. Obviously the JDM cars get away with plenty of advance in upper RPM ranges. The USDM and EU cars just drop to zero above 4400rpm, again besides the very slight advance that's left on the 06 WRX.
I added a bunch of maps.
i agree that the lack of advance above the 4400 range in the jdm/edm ecus is probably for emissions...
...but with avcs really helping the turbo spool, why are the lower (load and rpm) range cells also drastically different? (ie, the LGT goes from 0-5-10-0-0-10-10-0 in the .25 load site...why up down up down?)