I've been swapping my ScanGauge between my '96 Legacy 2.2L AT NA and my '00OBW 2.5L NA and watching the IGN parameter. I note on the '96 2.2L it will go as high as 50, but on the '00OBW 2.5L it goes no higher than 40, and on the '00OBW 2.5L it seems to be a little lower overall.

 

I'm wondering if the units are different between the ECU's, or what, I'm assuming the higher number is more optimal for power although of course that's what the timing map is for I'm guessing. I heard most production cars today come with conservative timing maps because it helps keep emissions lower.

 

Anyone see any performance chips or anything for regular (i.e. non spec B or C or Sti)?

I've been swapping my ScanGauge between my '96 Legacy 2.2L AT NA and my '00OBW 2.5L NA and watching the IGN parameter. I note on the '96 2.2L it will go as high as 50, but on the '00OBW 2.5L it goes no higher than 40, and on the '00OBW 2.5L it seems to be a little lower overall.

 

I'm wondering if the units are different between the ECU's, or what, I'm assuming the higher number is more optimal for power although of course that's what the timing map is for I'm guessing. I heard most production cars today come with conservative timing maps because it helps keep emissions lower.

 

Anyone see any performance chips or anything for regular (i.e. non spec B or C or Sti)?

 

differnt emission laws will do that from year to year.

 

nipper