anyone try this product before ?
since my place don't have people do reflash or tune or anything...
so is this a good idea ?
i heard good and bad thing for this...
anyone used it before ?
When I accelerate, the engine hesitate and sort of misfiring when it hits full boost @ 3500rpm. FYI, my car is still running stock with only, Apexi air filter, HKS BOV and HKS exhaust. And worth to mention, my engine...