I read that stock b16a2s call for 91 on the user manual and gas cap ? My question is what should I run on mine since I put low comp pistons(8.8:1) and stock b16s are (10.2 )

 

Why did you lower the compression ?

 

HPT only offered two kinds of wiseco pistons in that size which were these and the other ones were higher cr (11.2). Building the engine for boost not staying NA and was told by a tuner from a reputable shop not to get higher comp pistons. Trying to get the car drive able with a chipped ecu for now to at least break in the engine before I do anything else.

 

That low you could run Pemex and be fine. Go back to premium when you add boost.

 

Never heard or seen Pemex down here...is it equivalent to 87-89 or is it an additive?