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post #1 of (permalink) Old 10-10-2002, 08:56 PM Thread Starter
 
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Another dumb exaust question?

Got my DT header today. Whats the best exaust setup. Don't want to go for sound, but power. Was told to go 2" stright through with a Flowmaster or similar muffler, but I believe the 1.3 needs some back pressure to run right.
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post #2 of (permalink) Old 10-10-2002, 09:06 PM
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Re: Another dumb exaust question?

They do require some back pressure for torque, unless you want power in the 9,000 rpm range. Besides, you will ruin the exhaust seats and valves without it......
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post #3 of (permalink) Old 10-10-2002, 10:31 PM
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Re: Another dumb exaust question?

As far as I know 2" is as far as you wanna go with a 1.3 because it still offers enough backpressure. Getting it to route like the factory exhaust helps too. I'm running a 2" exhaust with a cheapy muffler, and a Calmini header right now. I change the oil every 3000 and she still running fine after 78,000 miles on the engine. This is the setup I've had since the new engine has been swapped in. So I'd say 2" is fine. Oh by the way this did more for power than anything else that's been done to the engine.
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post #4 of (permalink) Old 10-11-2002, 05:48 AM
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Re: Another dumb exaust question?

I just got my exhaust redone from header collector back, cost me $175 plus tax(labor, materials, and everything). It is 2" OD. The muffler is not a name brand, but one that my exhaust man sells that I have used before. It does not sound bad, but I wanted the best flow for the money. I have this bad habit of bottoming out in mud holes and this tends to tear out some of the exhaust components (in my case anyway). I can't justify spending money on a name brand just to tear it out.
Just thought I would add my 1 cents worth.

Good luck,

Jim
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post #5 of (permalink) Old 10-11-2002, 06:23 AM
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Re: Another dumb exaust question?

I agree 2" is the best way to go. Best upgrade I've done so far the difference in power is very apparent. My catlytic converter was obviously stopped up before the upgrade. Went to efficient converter and the difference was dramatic for about 40,000 miles now.
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post #6 of (permalink) Old 10-11-2002, 09:42 AM Thread Starter
 
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Re: Another dumb exaust question?

My Cat, which was just recently replaced has an 1.5' inlet and outlet. Should I Just incorporate it into the system or replace it with one that is a fell 2". [img]images/graemlins/confused.gif[/img] My muffler guy says it is no problem getting it to fit into the system, and I am thinking that this would give me the backpressure I need.
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post #7 of (permalink) Old 10-11-2002, 10:50 AM
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Re: Another dumb exaust question?

How about something like a 2" or so inlet and dual 1.5" outlets or something.
I think it would keep the noise (flomaster is loud!) to a minimum but still have the power?
[img]images/graemlins/laugh.gif[/img] Then you could say it's got a 4.3 inside hahah!
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