[adzyspence]

hey guys got a TB42E and have pacemaker extractors and in a couple of weeks will have a full 2.5" exhaust system straight through with the high flow muffler. was then going to get it dyno tuned. i was just woundering if anyone else has done similar and did they gain any more power or notice a big difference.
thanks.

 

[Danny40]

Can you re-tune the factory ecu's or do you have to go a aftermarket ecu/piggy back or chip?