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Old 06-09-2011, 07:53 AM   #1
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Dual exhaust!!!

Generally how much more hp can one get if he were to get a custom dual exhaust installed on his pony?
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Old 06-09-2011, 08:09 AM   #2
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5-10 if done right. Go easy and save up for an americanmuscle.com exhaust.
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Old 06-09-2011, 08:13 AM   #3
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Re: Dual exhaust!!!

Oh I know Bone is gonna be chiming in on this anytime.

HP depends on the install, your pipes, & a lot of other variables. Gains up to 5-10 HP can be possible but if you throw on a new set of headers along with the right exhaust, well then that would be like the ying to the exhaust's yang wouldn't it?
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Old 06-09-2011, 08:21 AM   #4
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Re: Dual exhaust!!!

I had my Y pipe area cut off (so I had two pipes from each side) then I had custom bent stainless pipe 2.25 diam formed and welded in. I used two mufflers in the OEM location (need hangers) then had them run the pipe from the muffler back and welded on 22" 2.75 inch polished tips (angle cut like OEM GTs)

cost was 350 but this was back in 01 so... figure 450 today.

may can buy a catback from a GT and have a shop fab it up to the Y pipe so you have true duals for cheaper.
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Old 06-09-2011, 09:50 AM   #5
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Re: Dual exhaust!!!

what are you putting it on , year ? engine ?
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Old 06-09-2011, 01:23 PM   #6
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Well i was thinking off obviously getting a true dual exhaust but what I want to get is a pair of magnaflow mufflers and it's going on a 3.8 v6 1995
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Old 06-09-2011, 10:23 PM   #7
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Re: Dual exhaust!!!

Don't expect huge gains after full exhaust...it just doesn't happen on our cars. Maybe 5-12 rwhp tops after a tune for the exhaust modifications.

Whatever you do get chambered mufflers...the straight thru design like the Magnaflows you currently have don't sound the best on the v6's imo.
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