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post #1 of 9 Old 08-06-2009, 08:22 AM Thread Starter
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muffler question

I'll be running a pony down hot side, MPT-70, and intercooler with ebay cold side on my coupe in the next few weeks, as well as 42 lb injectors, and a Pro-M blow through MAF. Right now I have BBK 1-5/8" long tube headers, MAC pro chamber, and spintech pro streets with flowtubes welded on. I've heard that chambered mufflers severely limit performance on a turbo car. I was planning on buying the pony down Y-pipe and hooking my existing spintech mufflers to it. Would this be a bad idea and would it limit performance? Thanks for the help.

Chris


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post #2 of 9 Old 08-06-2009, 08:25 AM
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get rid of the chamber mufflers.. i went with HOOK MaxFlows from summit. They sound as quite a stock and they are a straight through muffler. even on the highway no drone at all very very quite untill you open it up this way it is a totall sleeper


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post #3 of 9 Old 08-06-2009, 08:41 AM Thread Starter
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Thanks for the tip, but I'm not necessarily concerned with the car being a sleeper. It's wild strawberry metallic with 17" chrome rims on it, 3" exhaust tips, tinted windows, and the interior from a 2004 cobra. Right now it's loud as all hell and I like it that way. I'm concerned about performance issues associated with a chambered muffler design on a turbo set up.

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post #4 of 9 Old 08-06-2009, 09:33 AM
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if you dont care about the sound then you can go with race bullets? but you will def lose power with chambered mufflers some here have picked 20hp or better when they switched to a straight through design

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post #5 of 9 Old 08-06-2009, 09:37 AM
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if noise is not a factor then a open dp is the way to go..
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post #6 of 9 Old 08-06-2009, 01:07 PM Thread Starter
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hmm, i was thinking about bullets... do you guys have any sound clips of turbo cars with different mufflers?

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post #7 of 9 Old 08-06-2009, 05:48 PM
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Originally Posted by 91coupeLX View Post
hmm, i was thinking about bullets... do you guys have any sound clips of turbo cars with different mufflers?
Here is mine...no cat's or muff's. http://videos.streetfire.net/video/3...ea0150d4a0.htm

I will say I picked up quite a bit of SOTP horsepower and a definite decrease of turbo spool when I removed the flow's.
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post #8 of 9 Old 08-06-2009, 09:51 PM Thread Starter
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Here is mine...no cat's or muff's. http://videos.streetfire.net/video/3...ea0150d4a0.htm

I will say I picked up quite a bit of SOTP horsepower and a definite decrease of turbo spool when I removed the flow's.
I've seen that vid quite a few times, and it makes me drool every time. You need a new clip with the 470w now

So you're running two open downpipes straight to tails?

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post #9 of 9 Old 08-07-2009, 09:53 AM
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I've seen that vid quite a few times, and it makes me drool every time. You need a new clip with the 470w now

So you're running two open downpipes straight to tails?
Thanks!

Hopefully I'll finish up within the next few weeks. With a new baby, I've got better things to focus my attention on.

Yep, the downpipes run straight down to the h-pipe (already had it) and straight out the tail pipes.
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