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Old 08-20-2016, 12:16 AM
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Default 9 sec cars and faster

Would like to know what you guys are running for exhaust setups thinking of open headers or new exhaust setup my car has gone 10.00 so far with an open tsp y pipe was thinking of either going open headers or cutting the y at the merger looks to be 3.5 and running a bullet and dumped

Last edited by 98z28jorge; 08-20-2016 at 12:48 AM. Reason: More info
Old 08-20-2016, 12:51 AM
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open down pipe lol sry had to throw it out there
Old 08-20-2016, 08:08 AM
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Open is always going to run better... Least you can get away with would be my advise. Less weight, less hassle
Old 08-20-2016, 11:10 AM
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I tried open headers on the street and its obnoxiously loud and felt a bit sluggish while driving around town haven't tried it at the track open header yet with the open y pipe it's a little better in both aspects but I was woundering if the neck down to 3inch at the y was holding me back at these power levels
Old 08-20-2016, 11:48 AM
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It's likely not helping, and did you tune it with open headers? If not the fueling is likely off and that's the sluggish feel.

If you want something to run that's semi quiet and won't restrict step the pipe up to 3.5'off the collectors and put a pair of magnaflow race oval mufflers that are 3.5'in/out and enough 3.5 pipe to run back to the tires and dump it out the sides. Super 44 flowmaster will work too but they're heavier
Old 08-20-2016, 01:28 PM
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I agree retune with the headers open
Old 08-20-2016, 03:54 PM
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Not a 9 sec car but I run 2 cut outs keeps the noise down when I drive the car and it directs it out the side a little more than open headers. Just thought that I would throw it out in case you hadn't considered it.
Old 08-20-2016, 08:03 PM
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If your a street car also, dont do open headers.... thats obnoxious... unless you like to be that way...

I run dual 3" exhaust with hooker maxflows 3".... mid 9 sec 4600lb car... will be high 8's this fall....
Old 08-21-2016, 07:22 PM
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I'm gonna customize the tsp y pipe the fit a 3.5 or 4 inch bullet and dump it hopefully it quites it down a bit and still flows good
Old 08-21-2016, 08:36 PM
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4" downpipe to a cutout then tapers to a Magnaflow 3" catback with muffler.
Old 08-23-2016, 03:21 PM
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Some tracks won't even allow open headers. But besides that, if your car is right on the limit where if you had a Y-pipe and dumped muffler vs open headers would make the difference on 9 or 10 sec pass, then I would say make up the difference somewhere else.
Old 08-28-2016, 05:28 PM
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I run tsp 2" headers with the 3 1/2" collector. 9" dynomax race bullet muffler with turn downs out the sides. (ignore my booger welds, they suck but dont leak)
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Old 09-19-2016, 03:20 PM
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I had a single 4" into a 3" over rear axle to a flowmaster picked up 40-50 rwhp by cutting it and dumping a single 4" bullet at the rear end.
Old 09-21-2016, 02:52 AM
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8.99 @ 154 mph, 4110 lbs.

Kooks 2" header with 3.5" collector. 3.5" extensions off each collector about 18"-24" longs. No mufflers or crossover pipes.

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Old 09-21-2016, 10:38 AM
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2" Kooks long tubes with 3.5" slip on collectors. 3.5" x 6" slip on turn downs. With dynatech incerts. Drops the sound just enough to stand it. With just enough back pressure so the O2s work good. Turned them enough to get most of the air out from under the car. If the exhaust music is too loud. Your too old. LoL
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Old 09-21-2016, 11:08 AM
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Originally Posted by k_garretson23
I run tsp 2" headers with the 3 1/2" collector. 9" dynomax race bullet muffler with turn downs out the sides. (ignore my booger welds, they suck but dont leak)
Bet that is loud!



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