I have a '05 matrix xrs with cai,tanabe catback and 2.5 inch custom exh. I hoping someone out there has some info on what can be done to squeeze some more horses out of the 2zz. And can someone please tell me why toyota would make a non-tunable car in this tuner crazed world.
I'm gonna see how much i can get w/ all motor first. Try and port you oem header and possible bore your TB and Intake manifold(just on the TB side not the runners). Use a hi-flow cat. depending if your state allows it. To tie it all together get a Camcom to get the most out of your bolt on's.
^yes, i'm still looking into getting one, maybe though. With the bolt on's listed above minus the s/s a good EMS will get the max. out of those items. And you can make a custom race header/exh. hybrid for your car as well, i'll be posting that in some time though.