[09 CHALLANGER R/T]

I am getting ready to do some mods for my challanger 5.7 R/T and need some advice. I want to put on a 90mm throttle body, cool air intake, high flow fuel rails, 50lb fuel injecters, JSA long tube headers, high flow cats, and go to a custum 3" exhoust. I called a guy to give me a base line dyno and told him what i was going to do and asked him if he would tune it for me when i was done. He told me i would burn out the plugs with all that and 50lb fuel injecters is to much. Can someone give me some advice on how to make all this work.

 

[Speedy!]

He's right.

You don't need 50lb injectors or high flow fuel rails for what you're doing. 50lb fuel injectors are what come with superchargers.

Just do you bolt ons and get a tune and you'll be good. Expect about 40 or so RWHP gains.

 

[lakersfan7272]

x2 on what Speedy said. I wouldn't spend the money on the throttle body either. You're not going to be able to take advantage of it.

 

[rayzazoo]

The manifold for re 5.7L isn't ported to 90mm. Might look at an 85mm instead.

 

[rayzazoo]

Also, I you dot have a predator, that would help maximize the bolts potential.

 

[dark side]

Has anyone done the 85 mm TB yet? any gains noticed?

 

[lakersfan7272]

You're not going to realize gains from a TB unless you're running a lot more than CAI and other bolt ons.

 

[BigBear]

yeah buddy all thats gonnna be a waste except the headers and exhaust. Supercharge that thing and then maybe the rest will make sense.