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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.
 

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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.
 

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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.
 

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

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

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