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Old 05-15-2009, 09:26 PM   #1
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Exhaust Help

K i want to keep my stock headers and I want to be cheap.
but i want a new exhaust.. a friend told me to get an offroad h pipe but i heard you lose pressure without the cats.
also i'm not really learned on exhaust systems.. do you Have to have a v6 converter kit if i want true duals?
anyone know of a full system thats cheap?
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Old 05-15-2009, 10:35 PM   #2
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Re: Exhaust Help

Read the topic started by redelf88 just below yours in the v6 page. Spector V has a great explanation of exhaust options.

A "true dual" system is one that eliminates the stock y-pipe. This can be done in a few different ways:

1) Purchasing a header back system, one that starts directly after the headers and ends at the tips. For exampe: Pypes makes one called the "Beast"

2) Installing an adapter(replaces y-pipe) that allows you to bolt either a stock GT catback or an aftermarket GT catback. American Muscle has the adapter for 124.99

Using a mid pipe: x-pipe or h-pipe(replaces y-pipe) that a GT catback connects to

3)Custom fabricating a system that can run two separate pipes(divorced duals) right up to the cats and putting your own mufflers in as well
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Old 05-15-2009, 10:47 PM   #3
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Re: Exhaust Help

i read it but he didn't go into the loss of pressure without cats, that's my main concern.
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Old 05-15-2009, 10:55 PM   #4
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Re: Exhaust Help

Also, I wouldn't recommend any mid pipe without cats. The best sounding sixer is a quiet sixer. A more mellow tone is your best bet. Once you get around 2500-3000 rpms, it tends to get higher pitched.

As far as back pressure, you might lose a small bit, and I mean a small bit of torque when you upgrade your exhaust, but its not too noticeable. I think the stock exhaust is 2.25in, and some aftermarket catbacks are 2.5in. The slightly larger diameter reduces some backpressure throughout. You will gain that back with some other small bolt on mods, and a good tune that will maximize the effectiveness of the exhaust.

If you do a custom fabricated exhaust get 2.25 piping throughout and you'll have no problem as far as losing backpressure.

As far as price, converter back systems that retain the y-pipe are the cheaper "systems", they just bolt right up to the stock y-pipe, but again, this isn't a true dual system.

I've heard a custom fab exhaust can be the cheapest route, get 2.25 piping and the mufflers of your choice. Plus this way you get true duals.
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Old 05-15-2009, 11:30 PM   #5
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Re: Exhaust Help

with true duals the pipes never meet together no x,h, or y just straight to the mufflers and tailpipe.
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