Removing muffler steel wool in a L99

[christianchevell]

look at the top of the page at the clips of exhaust..with DADA

[JD555]

Maybe try sticking some mechanical fingers down the pipe and try to rip it out? Some of those have large fingers that really grab. I dont know if its possible.

[chris1973]

Not sure of your budget but upgrade your exhaust in stages. I did Cat back cherry bomb extremes. Loved it but after a while it wasn't loud enough and there was definitely drone at lower rpms, later I did long tube headers and high flow cats. The HP increase was awesome and the sound was insane. But the drone was worse. So I replaced the Cherry Bombs with Borla Attak. I have had this set up for a few years now and I love it. I can lower the rpms to reduce noise and there is zero drone and when I get on it its sick. I took a video with cherry bombs on, with no exhaust and then with the Borla's. I'll post it in a second.

[chris1973]

With the Cherry Bombs

No muffles:

With the Borla's

I filmed all three when I was switching the mufflers. Same camera phone and same distance so its easier to compare. I think the Cherry Bombs had more base, sounded throater, almost meaner. But the drone was too much for me. With no exhaust it sound like a real race car, would love to have that option but its illegal and im sure I'd go deaf after a while. The Borla's Atak, IMO are mean as hell but when cruising I get now drone.

[Serpadu]

Thanks for all replies...

Originally Posted by christianchevell

removing the steel wool would be a real PITA and stupid to boot just to try to increase sound, you would be better with a straight x or h pipe and some aftermarket mufflers for sound as many do

Originally Posted by JD555

Maybe try sticking some mechanical fingers down the pipe and try to rip it out? Some of those have large fingers that really grab. I dont know if its possible.

Probably will be more easy than it looks, I can just cut the upper middle section where is the wool and push it... The problem with the H ou X pipe is the AFM, it will sound awfull.

Originally Posted by Hulk

It is a bit pricey but look at Solo cat back with j-pipes. I like mine.

Originally Posted by christianchevell

look at the top of the page at the clips of exhaust..with DADA

The main problem is that I live in Brazil, this custom exhausts aren't sold here. Importation fees are huge, the shipping is slow and expensive...

Originally Posted by ndtguy

I just enjoy the sound of the L99 on take off and once you get up to speed, it's pretty quiet again. (Also, I have the car tuned and no longer have the AFM/DOD)

When floored above 4k rpms, it will get louder.

The biggest problem is the ****ing AFM, again, haha. I'll try to import a Range AFM disabler soon...

Originally Posted by chris1973

I did long tube headers and high flow cats. The HP increase was awesome and the sound was insane.

Putting LT headers with the stock catback probably will sound how I want, but now I cant tune the ECU (warranty) to remove AFM and turn off the CEL.

[JD555]

I thought maybe the little J tube in the stk on might help with drone.

[myold88]

Originally Posted by Hulk

It is a bit pricey but look at Solo cat back with j-pipes. I like mine.

This is the answer, or even simpler is the Solo Axle Back exhaust with the J/pipes.
It's a muffler delete exhaust but may be a bit loud for your Dad though. I bet I'm
older than him- Love mine on my L99 and NO drone at any RPM.

[Serpadu]

Originally Posted by myold88

I bet I'm
older than him- Love mine on my L99 and NO drone at any RPM.

He is 81yo, haha.