So i was browsing around for some springs and retainers. Would single springs be ok for a 20g9lt upgrade? I'm looking into purchasing the set through GSC along w/some other goodies. For the Forge RS, is the knob version recommended as well? Thanks

 

Turbo size has nothing to do with springs. You need stiffer springs if you have large cams and/or plan to rev your motor past ~8000 rpms . . .

Sorry, no info on the Forge . . .

EVOlutionary

 

Im running the BC plus 1 valves,spring,retainers. Were revving to 9500 with no valve float

 

Different/upgraded valve springs would only be required and would only be of benefit if you're going to be upgrading to cams with higher lift than stock cams. It has nothing to do with turbo size.

Concerning our RS valve, it is only available with an adjustment knob. You can't get our RS valve without it. If you want to forgo the adjustment knob, you'll be looking at our Evo15 valve instead.

 

Yeah i'm running 280s.

 

which 280's? If it's GSC 280's, you don't need upgraded springs unless you plan on running past 8000 rpms consistently.

 

hks

 

Same answers you got on Evotuners yah except for the "single spring" part. I still don't know what that means.