[yep m5]

has anyone put a power chip and ehaust on a 4.6? does it make any difference? am thinking of doing mine.

 

[yep m5]

Wow I posted his 12 months ago and still no answer! Anyone??

 

[canysmc]

Try Dinan

 

[LI-M5]

sorry if im late but i just saw this,i got a 4.6 i did cold air intake eng and tranny software made a huge difference.well worth the $$.

 

[unfoundhorsepower]

Is there anything for my 4.8 ??????????