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      04-25-2009, 12:57 AM   #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, 01:05 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, 06:42 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, 07:55 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, 07:00 PM   #27
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hey guys, bump

would you lose power with a muffler delete?
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      04-29-2009, 07:01 PM   #28
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how about muffler, 2nd cat, and resonator delete? lolz
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      04-29-2009, 07:07 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, 07:07 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, 08:56 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, 09:00 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, 03:31 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, 03:45 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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      07-08-2015, 10:00 AM   #35
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Hey Guys,

I removed the rear muffler (the one with the tips) and had pipes just welded in place with tips. Its pretty loud. It sound nasty .. in a good way.

I am now looking into adding mufflers or baffles to the tips. My head hurts after 25 minute drive. Its also to loud with the top down and cant enjoy the cruise.

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      04-20-2018, 01:38 PM   #36
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Quote:
Originally Posted by rzm3 View Post
dont even think about removing the muffler... your car will rattle like to tomorrow.
I did my muffler delete only the inside rattles just buy afew exaughst mounts and your good
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      04-20-2018, 01:39 PM   #37
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Quote:
Originally Posted by McLuVan View Post
what rattled?
I did my muffler and today doing resonator it is just the inside of car the back cup holders rattle abit
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      04-20-2018, 01:53 PM   #38
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      04-27-2018, 11:50 PM   #39
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I had a Borla ATAK exhaust with the resonators deleted. It gave the car a mean deep sound. Really good.

Today I added an X pipe and deleted cats. The x pipe has resonators in the back.

Thus far it sounds great, a bit raspy but good. It is quieter on idle and louder under throttle.

No drone at 55mph or 65 mph, so perfect for me.

The Borla exhaust is the reason for no drone. It's not the best exhaust out there but it is a good one.

Check out EAS's exhaust comparison video on YouTube.

Here is a pic of the x pipe I added. I highly highly suggest and x pipe over a resonator delete.

As you will have to cut the stock x pipe if you want to upgrade it to a cat less x pipe later. So it's a pain in the a**
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      04-27-2018, 11:52 PM   #40
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Quote:
Originally Posted by premo View Post
I had a Borla ATAK exhaust with the resonators deleted. It gave the car a mean deep sound. Really good.

Today I added an X pipe and deleted cats. The x pipe has resonators in the back.

This far it sounds great, a bit raspy but good. It is quieter on idle and louder under throttle.

No drone at 55mph or 65 mph, so perfect for me.

The Borla exhaust is the reason for no drone. It's not the best exhaust out there but it is a good one.

Check out EAS's exhaust comparison video on YouTube.

Here is a pic of the x pipe I added. I highly highly suggest and x pipe over a resonator delete.

As you will have to cut the stock x pipe if you want to upgrade it to a cat less x pipe later. So it's a pain.
Also I almost had it installed on my own, but had to take it to exhaust shop because I couldn't cut all the way through stock x pipe (on jack stands)...

As the resonator delete was done with a stainless tube that was welded to a sleeve that went into my axel back exhaust.
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