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Old 07-11-2007, 01:04 AM   #1
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Default helping an 00+ breathe better

hey everyone

im thinking of upgrading from my embarassing SE exhaust for my 01 to a the dual exhaust. (i testdrove an impala SS with a friend and liked the exhaust)

Im sure this would help the engine breathe like it should and i just want to do from the trunk area..back.
I'd like to stick with either a stock SLE SSEi system, ive read they just bolt up with a few twists and turns, also ive heard of different aftermarket companies making mufflers and stuff for cars.

anyone want to lead me in the correct direction?
project should start sometime in august or september.
thanks
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Old 07-11-2007, 01:14 AM   #2
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Exhaust improvements for the most part will not improve your performance, and may actually hurt you.

Most SSEi'* here keep their exhaust mostly stock well into the 14 second range on the quarter, and keep stock tube diameters into the mid-13'*.

If you 'free-flow' your exhaust too much (very easy to do), you will lose exhaust velocity, costing you low-end torque.

Our factory exhast is mandrel bent pipe, and is designed for performance.
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Old 07-11-2007, 02:07 AM   #3
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If he utilizes the stock SLE/SSEi exhaust from the 'Y' back I doubt there will be any loss. I doubt the SLE'* with dual exhaust are less powerful than the single exhaust SE'*.
But, I have to agree with Will, especially based on my personal experience with exhaust work I've done, that you don't want to go larger than stock, maybe 2.5" at the most.
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Old 07-11-2007, 07:30 AM   #4
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willwren i agree. thats why i asked this before i went into this project. many thanks.

If I were to run the Y pipe and find a SLE/SSEi system from a Junkyard, would it work better? Or would it sound better than mine right now, and thats it.
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Old 07-11-2007, 08:04 PM   #5
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there are a few SE'* that have done a "cat back" off an SLE or an SSEi....

im sure that you wouldnt have a problem with putting one on your car
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Old 07-11-2007, 11:59 PM   #6
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Bumper cutouts? I guess you can always just angle it down more.
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Old 07-12-2007, 12:24 AM   #7
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thinking about all of this, im not sure i will be doing the upgrade. losing power scares me, im trying to gain power and help the engine breahte better, i could careless about sound at this point.......however the sound of the stock duals is a beautiful thing.

Here is a good question, not knowing much about the other models than SE'*.
If the SLE model has the N/A engine and the stock Dual exhaust, wouldnt it perform better than the single exhaust stock that mine has?
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Old 07-13-2007, 01:04 AM   #8
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Quote:
Originally Posted by ptrfair
thinking about all of this, im not sure i will be doing the upgrade. losing power scares me, im trying to gain power and help the engine breahte better, i could careless about sound at this point.......however the sound of the stock duals is a beautiful thing.

Here is a good question, not knowing much about the other models than SE'*.
If the SLE model has the N/A engine and the stock Dual exhaust, wouldnt it perform better than the single exhaust stock that mine has?
Look at it this way. Both the single and dual setups flow more then enough for a stock N/A motor. The only advantages to the upgrades would be sound/visuals...nothing else. I've done the high-flow exhaust on both of my Bonne'* (magnaflow cat & muffler)...I didn't notice a power loss on either. Just do not increase pipe diameter which has already been metioned...
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