gm supposedly has stage kits already to boost power up to around 300. i think its through a tune though. and possibly larger injectors. css.net has more info. admin went to a first drive and testing thing along side motor trend.
gm supposedly has stage kits already to boost power up to around 300. i think its through a tune though. and possibly larger injectors. css.net has more info. admin went to a first drive and testing thing along side motor trend.