Exhaust systems, best one to boost horsepower

I have to tell ya. I have done many mods to my car but I absolutely love the sound of the JBA LT headers, H-Pipe w\ high flow cats combo. I do still have my Flowmaster mufflers still on there. The sound is amazingly deep and throaty until I open her up and then she sounds like a top fuel racer when the lights go green

rpguru said:

This system produces 19 hp 20 torque. 15881

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So this garbage gives you that much of gain. I thought there wasn't much to be gained by changing axel back.

07gtfolife said:

So this garbage gives you that much of gain. I thought there wasn't much to be gained by changing axel back.

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find a sheet from a customer, instead of the manufacturer. that will give you real world numbers. compare them to this sheet and see if it is correct...