Has anyone used this combo? How do you like the combo and is it worth installing both pieces? I actually have the Crawford Plenum already installed and really want to know if adding the Iso Thermal will produce any gain. Thanks.

 

the iso thermal upgrade is just to keep the temps down. It's not going to increase hp. The spacers are the reason for the hp/tq gains... why do u think the hp/tq gain are the same for the basic and iso thermal kits.

 

pharmD..... same hp/tq gains are the same for basic and iso but with the iso, it'll keep the plenum cooler. So after driving a while.... the engine with the iso thermal would probably perform better than one without since the plenum is cooler

amg, i'm sure someone on the forum has done this combo.....did you search already? i'll try to find the thread if i can and post it here