06 T-RED S/C GT
forum member
Are you running the Thrush 24" mid mounted glasspacks and O/R H as an axle back delete or also with axle back mufflers added ? From the video you posted, it appears you still have the Roush extreme mid mounts installed
Mine had a two in two out single chamber 8" long generic muffler for about 3 months. I replaced the h-pipe with it like a MAC ProChamber, and there were no clearance issues on my lowered S197 - in the end I never found axle backs that sounded the way I wanted with that setup so I went back to the x pipe. Now I'm back with an h pipe to get rid of that last little bit of raspy edge in the tone.Actually I'd be more worried about driveshaft clearance with such a setup. It might be possible, there's just not a ton of room to work with back there.
I think it would actually work better if you could get it right behind the H pipe, but you'd have to have the muffler inlet spacing dead on for that to work, and again, not a lot of room.
I still have the axle back muffler deletes from the Roush mid kit, but mid mounts are Thrush.Are you running the Thrush 24" mid mounted glasspacks and O/R H as an axle back delete or also with axle back mufflers added ? From the video you posted, it appears you still have the Roush extreme mid mounts installed
Ok I just looked at this today and only scanned through the posts, but here is my experience- I have changed my exhaust so much on my S197 that I had to retap my stripped out hanger threads... I had the Roush Extreme mid mounts. They were very loud and the drone was more than I wanted. I replaced my x pipe with a custom made two in two out chambered exhaust with different axle backs (straight pipe, MBRP cans, etc)- straight pipes were loud raspy and loud drone, everything else was too quiet with different tones. The BEST sound I found for my S197 was mid mounted 24" Thrush glasspacks after an offroad H pipe. Almost zero drone, and not raspy at all. Great tone and not too loud. Here is a link to a vid of my car with offroad x and mid mounted 18" Flowtechs. The other specs of my build are posted with the video:
I still have the axle back muffler deletes from the Roush mid kit, but mid mounts are Thrush.
The main problem with getting our exhaust to have that old school muscle car rumble is the location of the mufflers in relation to the tips. They are right on top of each other. When you mid mount mufflers/resonators it gives you a lot of distance to the tip. That is why our cars can get that raspy raw sounding exhaust. I suggest mid mounted to anyone who ever asks, "How do I get that old school rumble?" I thought I even seen someone mid mount staggered stingers and it sounded awesome.
I should've realized you swapped out the Roush mid mounted resonators in favor of your Thrush glasspacks while keeping the Roush delete tips.. My only concern with glasspacks is IIRC the packing material used will eventually burn up and may cause obstruction issues down the road..
Totally agree that glasspacks are not the long lasting solution- never heard of them plugging up but I know for a fact they get louder with age as the packing wears out. Also, they are painted mild steel and will rust out before the packing wears out- the 93 octane 10% ethanol pump gas I use creates a ton of water as it burns. I'm sure there's a puddle just sitting in them every time I take a short drive that doesn't heat up the exhaust enough. No worries though, I have a solution- I'll just change my exhaust.... again....
Do you have any pics from when you had this set up? And are your glasspacks currently dumped?I replaced my x pipe with a custom made two in two out chambered exhaust with different axle backs
FRPP FRS-500 mufflers, no drone. Then added JBA ceramic coated LT's and mating JBA high flow catted H. Was way too loud and bad drone at 1900-2000 rpm. At 70 mph in OD, it's 2100 rpm with a 3.31 rear gear. Had SS M80's welded in, just before the rear axle. We cut the slotted portion off of each end of both M80's, prior to welding them 360 degs. Down to an acceptable sound level, and drone is 90% gone, but still a bit at 2 krpm. The sound is a lot deeper, lower pitched. Hold an empty large cardboard box by the tip of one flap, and the box vibrates. It's almost like it has a sub sonic component to it.. that can be heard inside the house, with car idling across the street.
Buddy had cherry bombs, on the ends of his LT's. Burnt the red paint off, then burnt the insides out. Cherry bombs use alumininzed steel alloy. It's not the best material to use for a simple resonator. The SS resonator's, welded in, hold up well. The FRS-500 mufflers on my 2010 have tips that are 1" longer than the FRS-500's used on the 05-09 cars.
Do you have any pics from when you had this set up? And are your glasspacks currently dumped?
....I really need to quit screwing my exhaust...
So if your FR500S mufflers didn't drone until after adding the JBA LT's and high flow catted H.. Which in your opinion is causing the drone, the JBA LT's, high flow catted H or both
Ehhhh. I get a little bit, but only at very specific RPMs and under load. It rarely happens, so it's a nonissue, but it still occurs.The FRS-500S are guaranteed drone free.... provided the rest of the exhaust is oem.
Ehhhh. I get a little bit, but only at very specific RPMs and under load. It rarely happens, so it's a nonissue, but it still occurs.
So if your FR500S mufflers didn't drone until after adding the JBA LT's and high flow catted H.. Which in your opinion is causing the drone, the JBA LT's, high flow catted H or both
Burnout video
This setup was American racing 1 3/4 headers catted h pipe and SLP loud mouths. Very loud when accelerating hard. At 70mph it was virtually silent. No drone.