[Official] "Do I need a tune with bolt-ons?" thread

[Team_STILLEN]

Originally Posted by ///PureSwank

Nah rule of thumb is 3 or more breather mods. Even then you might be good but you'll start fuckin with the ecu by then.

We have similar experience with bolt on mods. We find that once you go past Gen3 intakes, HFC's, and Cat-Back Exhaust you really should do a tune. You will see gains from Tuning with just those three mods, but we highly recommend getting the car tuned if adding headers or intake manifold just to maintain AFR's (power gains are a plus though).