Adding HP after FI
Thread Starter
3rd Gear Member
Joined: May 2011
Posts: 695
From: California, Colorado
Adding HP after FI
I was wondering-
How much HP can be added to an already supercharged 4.0? Assuming the following is already installed-
Shorty headers
Metallic hi flo cats
x pipe
dual axelbacks
Also, leaving heads, cams, pistons and rods for a later rebuild
How much HP can be added to an already supercharged 4.0? Assuming the following is already installed-
Shorty headers
Metallic hi flo cats
x pipe
dual axelbacks
Also, leaving heads, cams, pistons and rods for a later rebuild
5th Gear Member
Joined: Jul 2010
Posts: 4,404
From: Texas
The intake. Going with a higher flowing CAI will help free up more BHP. Just make sure you get a reTune to account for it. Since you have aftermarket exhaust stuff with FI, plus slap on the CAI, you should go for a dyno tune to make sure you are getting the most for your combination of mods.
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