Looking for impressions of GTM or Stillen Supercharger kit 2-3 years in

SS_Firehawk

No CARB when you have to tune the Stillen kit to not kill your car. CARB for that kit isn't really what it is. That's why it consistently sucks. It doesn't make bad power with some supporting mods and a good tune, but GTM really has opened up some great options for supercharging and left Stillen so far behind it's not even competitive.

__________________

future370zzz

From talking to Stillen, they are allowed to "update" their canned CARB tune so I would think they have tuned out all of the bugs. The confidence is not there right now with their tunes.

The CARB placard will come installed on the blower, whatever you do afterwords is on you. So you could theoretically get Stillen and CARB and then do a custom tune, impeller upgrade and smaller pulley to push 10psi and try to get 460-470whp and then return to "stock" Stillen CARB kit when needed. Plus CA is supposedly implementing a not rolling emission test, just uses the OBDII scanner link to check the computer for mods. We will see.