I have a gg evo 9 ( not an MR). Perrin down pipe, perrin test pipe, hks cat-back. K&N drop in. Im deciding on what cams to put in... i need some of ya'lls advice. Im also debating on whether to get it tuned at topspeed, or dyno4performance. i was thinking about goin with 272/264 or maybe 272/272.

Also what numbers are others seeing with the same mods, and what dyno was it on.

i want to go with GSC 272's and dyno4p tune, what do yall think?

 

Get the GSC S1 cams

 

is this from personal experience? i gotta build my valve train also right? i mean i dont have to but if i over-rev it i could float a valve.

 

Not for the S1. Search through this threads. Everything you need to know is there if it doesn't answer your questions I would pm greg@gsc
https://www.evolutionm.net/forums/fo...play.php?f=187

Here is a comparision between the old GSC and the S-series
https://www.evolutionm.net/forums/sh...d.php?t=249080