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Old 11-07-2006, 07:47 PM   #1
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Default exhaust question

i am going to get a flowmaster for my bonny sse 94 and tryiong to decide on either an 80 or a 50 series, a 40 would be to loud. theres going to be a glasspack for a res and no cat, or how much for a new cat
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Old 11-07-2006, 07:50 PM   #2
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Running without a catalytic converter in Michigan is illegal, just like the other 49 States. It'* a federal law whether you have emissions testing in your area or not. Not only that, there'* no gain for you in performance, and it'* irresponsible.

To complicate matters more, if I turned you in, I'd get a $250 reward from the EPA. Care to guess what your fine would be?

Let'* re-think your exhaust. I think most here would suggest the 80-series over the other two, but there are also other exhaust options available.
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Old 11-07-2006, 08:19 PM   #3
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i agree that the 80 would be your best option...i do know that the 40 is not offered in a single in Dual out configuration....i do not know if the 50 is or not....you must keep this in mind when selecting a muffler...also it should be noted that the muffler is a change in sound only...it does not add any performance

you can get a magnaflow cat and i believe they are highflow also.... off ebay for i believe $55 shipped (correct me if im wrong)

you already have a STOCK resonator...leave that one on and forget the glasspack
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Old 11-07-2006, 11:24 PM   #4
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Thanks for editing the post regaurding the Cat

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Old 11-08-2006, 08:07 AM   #5
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Default re mufflers

I was thinking does ahyone have a soundclip of a 80 series muffler on a bonneville????
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Old 11-08-2006, 08:30 AM   #6
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Quote:
Originally Posted by 1993 SLE
i agree that the 80 would be your best option...i do know that the 40 is not offered in a single in Dual out configuration....i do not know if the 50 is or not....you must keep this in mind when selecting a muffler...also it should be noted that the muffler is a change in sound only...it does not add any performance

you can get a magnaflow cat and i believe they are highflow also.... off ebay for i believe $55 shipped (correct me if im wrong)

you already have a STOCK resonator...leave that one on and forget the glasspack
To add to this, the only way to gain HP on the exhaust side is if the new exhaust is designed with flow in mind. When I had a local shop do up my Malibu Maxx, they went from the manifolds on back...completely new, and bigger pipe was used (though not too big as that would kill all my lowend torque), along with an 80 FM, and no resonator. I did notice a drop in lowend torque, but midrange pull is phenominal. Anyways, the Bonneville exhaust is pretty well designed from the start, and unless your cat is clogged, there is no performance to be had if you do a changeout. When the time comes for me to do my exhaust, I will be replacing everything just because it prior to me owning it it was, shall we say, NOT cared for at all. I won't be expecting any power gains unless the cat is clogged up when I do this.
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Old 11-08-2006, 09:39 AM   #7
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Default Re: re mufflers

Quote:
Originally Posted by Tracy34
I was thinking does ahyone have a soundclip of a 80 series muffler on a bonneville????
It won't do you any good to see one. We've learned over time that video and audio don't accurately represent the true sound. You have to hear one in person.

Whatever you do, don't go without a resonator. You'll get raspiness and popping. 92/93 Bonnevilles never had a resonator from the factory, so I added one. That was the best sound improvement I could make. I wanted a freeflowing exhaust (which I had) but I didn't want it to turn heads under light throttle.
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Old 11-08-2006, 11:23 AM   #8
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I know the 80 series on my Z28 is so loud it sets off car alarms, but I haven't heard one on a 3800. DBeast420 has a Magnaflow and it sounds awesome.
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