amg guy

iTrader: (1)

I was reading the DIY thread about installing a pulley on my car, do I need to do an ECU upgrade too or can the pulley be done by itself, also does the pulley void the factory warranty. I've got the extended warranty thru 2012.

theeddie

do it yourself = yes not that hard
void warranty= i would suggest you remove it if you say blow the engine tranny etc

amg guy

iTrader: (1)

yes it looks very simple to do, but do I need to do the ecu tune also?

thank you

blando

There are lots of threads on both your questions. Search around. I would defintiely update the ecu for the pulley. Good luck.