Thread: 3.4 or 3.5?

It matters if ZZP locked his PCM

Provided you get some colder plugs and the car is healthy, you should be fine with a 3.5. I definitely wouldn't try a 3.4 though.

ZZP's PCM is the richest of any I've looked at. So it will probably fight knock off a little better but just dumping a ton of fuel in isn't the right way to handle it.

Originally Posted by bluegtp91

It matters if ZZP locked his PCM

Hmm, I didn't realize you could lock a PCM...that would suck... especially since they usually want your core back...