its hard to tell how much HP it will give... With cutting your Cats out, you have a extreamly free flowing exaust, which if it is too free you are loosing back pressure and you can wave your Torque good by, but you will gain top end
I have a 2.5" custom SS straight pipe built or my car, from the manifold back, no cats. I have not yet dynoed the car but there is a significant seat of the pants difference.
I will have it dynoed before making the headers (whcih I will dyno it after again).
im thinking just a pipe all the way back or should i put on a cheap can or something. how much did yall pay for ur stuff, my friend he can get it done for me for under a bill
i have a 2.5in straight pipe with a straight though resinator... 80 bucks with the resinator. kinda sluggish up to 3k rpm but it pulls real well after that. only downside to this is the smell of the exhaust fumes
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