If you want to "safely" make 400whp+ on pump gas, you're going to want an FP Red (get the MHI housing), and a camshaft upgrade. It's going to need the full compliment of bolt ons though- O2 housing, intake, exhaust manifold, lower charge, down pipe, etc... Does the car currently have all of those parts? If it doesn't, the cost starts to get close to a turbo kit, and I'd just go with a turbo kit.

 

my current mods
fp red
1300cc ID
255 walbro
stock internals
stm catch can
ets short route icp
speed density
straight piped
stock intake & stock manifold.

Pretty much it.

 

Which air intake?
You need an O2 housing, LICP, cams, and springs retainers. I just woke up so feel like I'm forgetting something LOL

 

i do have the ETS LICP & 3” air intake.

i purchased a o2 dump, fp ported manifold and gsc 2 with spring retainer but haven’t installed these just yet.

 

So you already have the red. Just install all those parts around and you'll see decent gains on pump gas.

 

+1 you'll be good to go.

 

+2 the red is perfect thats what I ran on my previous evo.

 

Thanks guys for the input!