Lets Talk Exhaust Sizes.
Lets Talk Exhaust Sizes. Ok. I have a set of the infamous Ebay headers on the way. (Please do not flame them. I understand you get what you pay for and I know what to expect. I was gonna go with something else but just cant spit out the coin right now and am gonna have the car ripped apart next weekend. I want to install them then.)
However after ordering I noticed they have 1 5/8" primaries that step up to 1 3/4". My old pacesetters were 1 3/4" all the way. How much power can the 5/8" primaries support before losing power?
Also Im gonna be running the 3" y pipe that will feed into my stock 2 3/4" i pipe. That flows into a flowtech afterburner muffler and out the stock tailpipes and tips. This is just gonna be a temporary setup until I can get some good duals ran out the back. How much power can a single 2 3/4 inch pipe support before becoming a restriction? Im not gonna run a cutout because I dont race my car and Im not gonna run a dumped race muffler.
In the end I want to run exhaust out the back with an X pipe and dual flowtech afterburners or Pypes Racepros at the rear bumper. Should tuck nice or I may BFH under the rear seats and place the mufflers there.
However after ordering I noticed they have 1 5/8" primaries that step up to 1 3/4". My old pacesetters were 1 3/4" all the way. How much power can the 5/8" primaries support before losing power?
Also Im gonna be running the 3" y pipe that will feed into my stock 2 3/4" i pipe. That flows into a flowtech afterburner muffler and out the stock tailpipes and tips. This is just gonna be a temporary setup until I can get some good duals ran out the back. How much power can a single 2 3/4 inch pipe support before becoming a restriction? Im not gonna run a cutout because I dont race my car and Im not gonna run a dumped race muffler.
In the end I want to run exhaust out the back with an X pipe and dual flowtech afterburners or Pypes Racepros at the rear bumper. Should tuck nice or I may BFH under the rear seats and place the mufflers there.
1 5/8 is bigger than your factory manifold and it will support ~500rwhp on a turbo setup without too much problem. So unless you are trying to scavenge every last point of power from the upper reaches of hell on the tacometer, you'll be fine. Also the 2 3/4 is going to be the killer. You need atleast 3.5 inches of single i-pipe to match the flow of the two 3 inch header collectors.
1 5/8 is bigger than your factory manifold and it will support ~500rwhp on a turbo setup without too much problem. So unless you are trying to scavenge every last point of power from the upper reaches of hell on the tacometer, you'll be fine. Also the 2 3/4 is going to be the killer. You need atleast 3.5 inches of single i-pipe to match the flow of the two 3 inch header collectors.
You shouldnt lose anything from the headers. The step might actually give you more torque then anything.
stock exhaust pipeing will probably support in the 300hp range.
What are your HP goals ? its alot easier to run a single 3" out the back then true duels. but to each there own. GL
stock exhaust pipeing will probably support in the 300hp range.
What are your HP goals ? its alot easier to run a single 3" out the back then true duels. but to each there own. GL
You shouldnt lose anything from the headers. The step might actually give you more torque then anything.
stock exhaust pipeing will probably support in the 300hp range.
What are your HP goals ? its alot easier to run a single 3" out the back then true duels. but to each there own. GL
stock exhaust pipeing will probably support in the 300hp range.
What are your HP goals ? its alot easier to run a single 3" out the back then true duels. but to each there own. GL
dual 2.5" pipes will be more than enough flow for you. Until then the stock I-pipe will not hurt you in any way. Once you get to about 400 FWHP it will cause a restriction. Plus the dual 2.5" is alot easier to package than a dual 3". even a single 3" will support full bolt-ons and a 100 shot. Exhaust tuning is a science that is not thought of very much, but you can pick up 5-6 hp on a mild setup. On a 600 rwhp BBC we picked up about 20 rwhp with tuning a turn down exhaust. Left side was about 3" longer than the right, but it helped a ton! G/L
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dual 2.5" pipes will be more than enough flow for you. Until then the stock I-pipe will not hurt you in any way. Once you get to about 400 FWHP it will cause a restriction. Plus the dual 2.5" is alot easier to package than a dual 3". even a single 3" will support full bolt-ons and a 100 shot. Exhaust tuning is a science that is not thought of very much, but you can pick up 5-6 hp on a mild setup. On a 600 rwhp BBC we picked up about 20 rwhp with tuning a turn down exhaust. Left side was about 3" longer than the right, but it helped a ton! G/L
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Verdad Gallardo Thanks guys. Im just gonna keep my current planned setup with boltons. When and if I ever build the motor, or add a cam Ill do the duals then. I actually really like how my flowtech muffler sounds but I dont know how its gonna change once I do longtubes.
The sound will get deeper and louder thats for sure. You wont notice a real power increase however with that stock piping after the headers..
Ive heard great things about Atlanta Chassis dyno in Convington. I also heard that DAMIAN, a member here who owns Spartan Performance can tune OBD1 cars but not OBD2.
