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      04-24-2009, 11:57 PM   #23
McLuVan
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Quote:
Originally Posted by 2008GT500 View Post
Everything rattles and the drone inside the car is HORRID.
still not understanding why things rattle....
because the exhaust rattles?
because it's loud?
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      04-25-2009, 12:05 AM   #24
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That would be my guess. I think it's because the decible level coming from directly under the car reverberates throughout the car. It does sound great outside the car.
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      04-25-2009, 05:42 PM   #25
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I actually heard a AW e93 w/ the muffler delete earlier this week. The car sounded great as it drove passed me. I turned around and spoke w/ the owner who said that he didn't experience a noticeable drone, and that it really wasn't too loud inside the cabin. It also wasn't obnoxiously loud when he drove passed me. He simply ran pipes from the 2nd cats to the rear of the car and had the magnaflow quad tips at the end of the pipes. The note sounded much deeper, and while I only heard the vehicle at around 40mph, I gotta believe that WOT it would be quite loud...and nice.

However, is there a possibility of a HP loss w/ the muffler delete? I confess that I am ignorant when it comes to back pressure and how it affect HP, or possible valve damage.

Any thoughts on the muffler delete?
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      04-25-2009, 06:55 PM   #26
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Quote:
Originally Posted by lugnut View Post
I actually heard a AW e93 w/ the muffler delete earlier this week. The car sounded great as it drove passed me. I turned around and spoke w/ the owner who said that he didn't experience a noticeable drone, and that it really wasn't too loud inside the cabin. It also wasn't obnoxiously loud when he drove passed me. He simply ran pipes from the 2nd cats to the rear of the car and had the magnaflow quad tips at the end of the pipes. The note sounded much deeper, and while I only heard the vehicle at around 40mph, I gotta believe that WOT it would be quite loud...and nice.

However, is there a possibility of a HP loss w/ the muffler delete? I confess that I am ignorant when it comes to back pressure and how it affect HP, or possible valve damage.

Any thoughts on the muffler delete?
I hear you gain a couple hp
but lose a few lb ft, but the tq line gets straighter
I forgot who it was, but someone posted that result
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      04-29-2009, 06:00 PM   #27
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hey guys, bump

would you lose power with a muffler delete?
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      04-29-2009, 06:01 PM   #28
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how about muffler, 2nd cat, and resonator delete? lolz
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      04-29-2009, 06:07 PM   #29
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Quote:
Originally Posted by Sam12345 View Post
hey guys, bump

would you lose power with a muffler delete?
^^^^^^^^
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      04-29-2009, 06:07 PM   #30
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Quote:
Originally Posted by Sam12345 View Post
hey guys, bump

would you lose power with a muffler delete?
yeah.. you need back pressure on a n/a car.
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      04-29-2009, 07:56 PM   #31
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How about putting a cut-out right before the 2nd cat and resonator?

You would be bale to switch between fully straightpiped and stock, or anywhere inbetween.

So if you leave it at halfway stock/straightpiped, wouldnt i keep enough backpressure for power but sound good as well?
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      04-29-2009, 08:00 PM   #32
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Quote:
Originally Posted by McLuVan View Post
I hear you gain a couple hp
but lose a few lb ft, but the tq line gets straighter
I forgot who it was, but someone posted that result
This is correct, I did this when I first got my car. Dynoed the car and I gained like 7hp and lost 1ft lb. from stock. However the Tq line was higher all the way thru with muffler delete, the stock tq. line just peaked a higher tq. number. It sounded ok I guess, some drone but a little to muscle car ish for me. U cant feel the gains, it just shows on the dyno.
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      04-30-2009, 02:31 AM   #33
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Quote:
Originally Posted by niterider View Post
This is correct, I did this when I first got my car. Dynoed the car and I gained like 7hp and lost 1ft lb. from stock. However the Tq line was higher all the way thru with muffler delete, the stock tq. line just peaked a higher tq. number. It sounded ok I guess, some drone but a little to muscle car ish for me. U cant feel the gains, it just shows on the dyno.
yeah I think you were the one who told me
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      05-01-2009, 02:45 PM   #34
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Quote:
Originally Posted by niterider View Post
This is correct, I did this when I first got my car. Dynoed the car and I gained like 7hp and lost 1ft lb. from stock. However the Tq line was higher all the way thru with muffler delete, the stock tq. line just peaked a higher tq. number. It sounded ok I guess, some drone but a little to muscle car ish for me. U cant feel the gains, it just shows on the dyno.
Thanks for the info. Drone is really my biggest concern since I do mostly highway driving around 3-4k in 6th. By most accounts I would be above the worst of the drone. I'll probably mess around with this in a month or so w/ my db meter too.
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