SRT8.Acelleration

Looking for muffler considerations for a 98 ls1 mufflers dumped before axle. I want it noticeable at idle but not obnoxious, but loud at wide open, this is a street/strip car so i don't want any droan or headaches after a 30 mile drive. What are you running that fits this category, i was looking at spintech 3000f, borla xr1, or borla stype. Any recommendations.

Forcefed86

iTrader: (4)

Hooker max flow have the best decibel level VS performance I'm aware of. Great muffler for the price.

Ls7colorado

iTrader: (3)

I voted before you said you didnt want it loud.... well the main recommendation I can give for that is to run it all the way out the back

SRT8.Acelleration

cant do that, i have a 9" rear diff and the clearance is a problem for that. I dont mind loud, just not headache, droan, obnoxious loud. Looking for more adult loud, not teenager loud if you know what i mean.

HCI2000SS

iTrader: (2)

So you want bullet only style mufflers?

SRT8.Acelleration

not really, i called borla, spintech, etc: --- they all sell low profile mufflers and bullets that would work, i just dont want to have to do it twice and youtube vids suck when it comes to sound clips. Borlas are $250 each, spins are $120 plus install costs. I was hoping someone on here was running the borlas and the spins to get there input on it.

Forcefed86

iTrader: (4)

Noen of those are quiet mufflers. As mentioned run the hooker max flows. Look up muffler sound test on google. They have done multiple tests with a decibel meter.

Ls7colorado

iTrader: (3)

When you say 98 ls1 carm in assuming your talking about an Fbody, Good luck getting much more than a bullet style muffler under the car. unless you have it jacked up like in the 70's

RevGTO

iTrader: (12)

Like everybody is saying, Hooker Maxflow. I've had mine for many years now. Before it, I had GMMG and other systems and was famous for changing up my exhaust every six months or so. I finally found satisfaction with the Maxflow, though now that I and it are getting old, I'm finding it a little loud for my tastes in cold weather.

SF 1HOTLS1

iTrader: (24)

Been there done that. Any muffler dumped before the axle will drone and get old real quick. But if your dead set on that then magnaflow straight thru 3 inch with a 3 inch dump. I also tested the 4 inch pipe dumped before the axle and saw no gain in power but a huge loss in low end torque.

I now settle with a slp style loudmouth but with a magnaflow muffler before the axle. Magnamouth. This keeps torque down low and still is a straight thru setup. Works fine in my 430whp car with a 275 shot on top of that. Traps 136mph in a auto.

twins09

I'm looking to replace my stock exhaust for my ws6. I like the slp loudmouth but it may be too loud for my daughters. Did you replace the resonator with the magnaflow muffler?. I tried to get the slp powerflo but no one can seem to get it.. my car is all stock it's an 02 way convertible. I'm looking for a good catback exhaust

SF 1HOTLS1

iTrader: (24)

yes. I bought a eBay exhaust called Phab. Then put a magnaflow muffler on it instead of the resonator. It's a slp copycat exhaust. Was like 220

Che70velle

iTrader: (6)

twins09

Do you have a part number for th he magna flow muffler

Floorman279

iTrader: (11)

99 Black Bird T/A

iTrader: (4)

The old SLP Dual/Dual without the ring of silence is my long standing favorite cat-back. It's quite at idle, normal driving and will scream at high rpm.

This thread might be of interest has several set ups, dyno results and dB levels.

https://ls1tech.com/forums/generatio...al-street.html