d-mob

Hey guys, hope you’re all doing well.



I’ve been thinking about adding LT headers 1 7/8 with a catted Y pipe to my 2002 T/A. I already have GMMG exhaust and lowering springs from BMR.

I’ve been doing some research about ground clearance so I don’t scrape and I’ve noticed that the majority of people who had issues was from the driver side cats when the car is lowered. I don’t wanna go catless because with the GMMG exhaust it’ll be raspy as hell.

I haven’t made up my mind about what brand to buy, I’ve been leaning towards ARH as their quality is second to none, but there are also some companies that offer them at a good price like TSP.

What do you guys think? Your suggestions and recommendations are greatly appreciated.

Thanks


BTW that’s the cheapest set I found from ARH on this site 👇 the rest of the sites have them between 1860 and 1960 USD

https://www.griggsracing.com/product...-01178300LSWC/

DUSTYWS6

I’ve ran Kooks headers, with catted y-pipes, on my two lowered f-bodies and had no issues. One car had GMMG and was pretty loud. I like the Magnaflow exhaust on my current car.

d-mob

nice 👍 yeah kooks are awesome too but unfortunately above my budget because I have to take into consideration the shipping cost as I live overseas.
magnaflows tend to quite things down if your car is loud.

RevGTO

iTrader: (12)

Just FYI, even with cats (ceramic brick type, not hi-flows), my GMMG was still intolerably loud with LT's. After trying additional remedies (powerstick, resonator tips) I finally ditched it and went with a Hooker Maxflow set up. Sounded great even with ORY and I've never looked back.

d-mob

Thank you for the above info, I have listened to a few cars that had GMMG with ARH LT headers and catted y pipe on YouTube and I really liked it, of course those videos don’t do it justice to how loud it will be in person. I wish I’d be able to listen to one in person to make up my mind but I live overseas in UAE 🇦🇪 and F body cars are really rare here.

99Silver6.0

iTrader: (2)

GMMG cat-less with LT's was WAY too much for me. I watched videos of 4th gen guys that added a Magnaflow 14419 resonator in the I pipe. It takes a bit of the edge off but the rasp is still very much there. Mine sounded like a machine gun from 2000-2400rpm so I avoided that RPM range at all costs. Before I went long tubes and no cats the GMMG was 100% perfect!!! The rasp and drone while cruising is why I took the GMMG off my car. I have tinnitus pretty bad in my left ear so Ive got to be careful any more. I even tried Corsa and it was even worse inside the car. A 30 minute drive had my ears ringing for a day or so. Back to Magnaflow I happily went!

d-mob

thank you for sharing your experience brother, yeah I’m also trying to avoid the rasp and drone when going the LongTube route. Magnaflow is pretty quiet and tame for me, that’s why guys who have cammed their cars or got catless Y pipe get it, it just quiets everything down while keeping the HP.

wannafbody

iTrader: (2)

Several years ago I talked to someone who had longtubes, off road y pipe and GMMG and he said you couldn't even have a conversation in the car.

99Silver6.0

iTrader: (2)

Once I would get cruising about 75 on the highway my wife would plug her ears. It was loud and it got old!

d-mob

Damn 😮 I was just wondering….what kind of Headers and Y pipe came on the GMMG cars ? They just sound so awesome 😎

99Silver6.0

iTrader: (2)

Not sure what was on the GMMG stuff. My car absolutely screamed up top! I do miss that growl but I dont miss the dam rasp or drone.

RPM WS6

iTrader: (3)

Drone doesn't ever really bother me, except rare cases where the car has dumps under the cabin and I have to be inside the car for a long period at a specific droning rpm. But as long as it has tail pipes, this is not an issue in my case.

However, these guys are right about the rasp! This is a terrible sound, and it's a direct product of the ORY-pipe configuration. I have never experienced this kind of sound on a traditional true dual configuration (straight or H), but I have heard some ORX-pipe dual cars produce a similar sound (perhaps it was an inferior X-merge). It's an intolerable sound, like a Kazoo on crack.

Volume is subjective (what's too loud for one person can be just right for someone else), but rasp is an objectively bad sound IMO.

99Silver6.0

iTrader: (2)

This is a horrid video. Its the only one I ever had of my GMMG/Madhammer setup with ARH headers and ORY.

d-mob

thanks for sharing the video, you’re right about the rasp, it even sounds like an ORY pipe.