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Old 03-17-2006, 09:52 AM   #1
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Default Exhaust Recommendation

Hi, i've a 94' Bonneville SSEi and i've order a 2.5" pulley for the SC and already install a perform air intake. I want to install a 3" exhaust downpipe to muffler, but i'm not sure if I buy a high-flow cat-converter or simply remove it. Same thing for the Resonator. I would like to have a max of performance but keep a good sound and I want minimum cab resonance on the highway. What is the best/cheapest setup you recommend, cat-resonator-muffler

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P.*: Sorry for my english quality
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Old 03-17-2006, 09:58 AM   #2
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Your english is good. Where are you located?

A magnaflow high flow cat will help you greatly. Especially if you have the original catalytic converter.

Many find that removing the resonator is a mistake and causes the car to sound like a Honda with a grapefruit shooter exhaust.
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Old 03-17-2006, 10:02 AM   #3
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There'* a great thread which I'll see if I can locate for you where the various cat options have been discussed. I'll edit this post with it soon as I find it.

The general concensus has been to use the Magnaflow 94006 model for our car. Regarding the resonator, our local Series 1 guru, Willwren mentions that he ADDED a resonator whenever this topic comes up.... so like Boosty said, you don't want to delete it.

Edit: here'* the thread: http://www.bonnevilleclub.com/forum/...ic.php?t=49419
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Old 03-17-2006, 10:05 AM   #4
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Quote:
Originally Posted by BillBoost37
Many find that removing the resonator is a mistake and causes the car to sound like a Honda with a grapefruit shooter exhaust.
hey, thats a bit harsh. my car doesnt sound like a honda at all
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Old 03-17-2006, 10:08 AM   #5
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Supercharged sound VERY different without a Resonator.
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Old 03-17-2006, 10:13 AM   #6
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Quote:
Originally Posted by ELMACHOGERACHO
Quote:
Originally Posted by BillBoost37
Many find that removing the resonator is a mistake and causes the car to sound like a Honda with a grapefruit shooter exhaust.
hey, thats a bit harsh. my car doesnt sound like a honda at all
When Randy had the FrankenBonne exhaust done w/o it, the car ended back up in the shop a couple days later for one. Only car I have heard first hand is a 97 SSEi (well..motor at least, was in a 90 SSE)
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Old 03-17-2006, 10:18 AM   #7
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Quote:
Originally Posted by willwren
Supercharged sound VERY different without a Resonator.
1337ssei has an ssei w/o the resonator and it doesnt sound much different at all from mine, besides the differing mufflers.
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Old 03-17-2006, 10:22 AM   #8
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That'* why exhaust sound is in the ear of the beholder. But I think we can safely say that it is not necessary to remove the resonator to gain performance, since I believe that is what the question was.

3" down pipe - sure

Hi-Flow cat - sure

resonator delete - not necessary
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Old 03-17-2006, 10:31 AM   #9
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Definitely use a high flow catalytic convertor (available at www.justmagnaflow.com or on ebay -either place it'* under $60 with free shipping if you are in the US).
Also, I'd higly recommend a resonator -I go to Club Grand Prix Exhaust mod days quite often and I've heard many without and many with the resonator, and the guy'* who go without a resonator almost always regret not using one after hearing it without one for the first time.
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Old 03-17-2006, 11:08 AM   #10
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ok , where i can find a 3" resonator and which brand you recommand
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