Question about 1991 Volkswagen GTI
The rules are this, better airflow throgh the engine equals better perf. run a low restriction filter assembly, K&N and others make them, run a free flowing exhaust, do your research, just because it sounds good that doesn't mean it gives any perf gain, u can also fool with the electronics, they may or may not offer a performance chip for your car, u will have to inquire, call Summit racing, they are one of the leaders in the country on perf parts, they sell the best.
Posted on Dec 09, 2008
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