1 High FLow Catalytic Converter
1 High FLow Catalytic Converter What's the ups and downs of running 1 Catalytic Conveter after the Y on the Y-Pipe? I'm pretty much trying to kill some of the burning trash/gas smell. Would one converter effect RWHP/Sound?
I think it would be fine in the i-pipe. It might not be as efficient as it would be off the collector but it should knock the smell down and wont hurt hp. The sound with cats is much better imo. I have tds and have my bullet cats installed just before the x-pipe and they get Plenty hot. Melted the old carpet i have on my garage floor so now i keep a metal pan on the floor to keep that from happening again. I would mount it just after the merge to keep it as hot as possible.
I think it would be fine in the i-pipe. It might not be as efficient as it would be off the collector but it should knock the smell down and wont hurt hp. The sound with cats is much better imo. I have tds and have my bullet cats installed just before the x-pipe and they get Plenty hot. Melted the old carpet i have on my garage floor so now i keep a metal pan on the floor to keep that from happening again. I would mount it just after the merge to keep it as hot as possible.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I think it would be fine in the i-pipe. It might not be as efficient as it would be off the collector but it should knock the smell down and wont hurt hp. The sound with cats is much better imo. I have tds and have my bullet cats installed just before the x-pipe and they get Plenty hot. Melted the old carpet i have on my garage floor so now i keep a metal pan on the floor to keep that from happening again. I would mount it just after the merge to keep it as hot as possible.
Test that I have done a DB sound wave meter, comparing a race muffler and high flow cat located behind the y-pipe shows that the cat does a better job of cutting sound about 2DB and gets rid of the rasp. the cat core temp was measured after a short drive and I read temps of 660 degrees this was after having the motor off for 10 minutes as I removed the cat to measure the core. this is well within the light off range for cats of 400-600 degrees. so the cats do work in that location. exhaust smell was reduced. and there is a lot more ground clearance in that area under the car. looking to do Dyno runs to see if there is any HP loss using the cat in that location, seat of the pants feel was better low-mid pull with the cat. but need to comfirm with dyno run.
I know this is an old thread but wanted to see what were your findings. I just ordered two Thunderbolts to get welded but if I can get away with this setup that would be great running it on the i-pipe to save space and direct my attention to fixing the banging your. I haven't really been driving my trans am because I have two children and don't want them inhaling the gas smell at idle.
I have a really big problem with losing performance with the y pipe banging around. I was thinking of If mounted two it would make it worse. I was also thinking of mounting the cats like how Texas speed does their ypipe.
Do you have poly or solid motor mounts? Mounting the cats like tsp definately helps with clearance. Mine are mounted similar on my td system.
Last edited by LeftySS; Feb 8, 2017 at 12:56 PM.
Teching In
Joined: Feb 2016
Posts: 44
Likes: 2
They don't look anything special but they're manufactured by the leading header manufacturer in Australia. Nothing but success
http://www.outlaw4x4.com.au/html_pages/about_us.html
http://performancewarehouse.com.au/i...&search=outlaw
http://www.outlaw4x4.com.au/html_pages/about_us.html
http://performancewarehouse.com.au/i...&search=outlaw
Teching In
Joined: Jul 2018
Posts: 31
Likes: 1
From: Maryland
So, i also want to add hi flo cats. I currently have LT's (dont know the brand, but they have the flanges), they go to an x pipe and are duals over the axle into a duel in/out muffler in the rear. I cannot find any shop willing to add these in at all. They all seem to think that they have to be at the collectors where you have less ground clearence and say it cant be done. I want to cut down the smell and sound. I am at 95db at idle and 105-107 for normal driving on the interior. I also don't know if switching to two borla xr1's in the rear for example would make me louder or quieter than the dual in/out, lol.
And does anyone know if I would have to get a re tune adding in the hi flo's? Currently the rear o2's are tuned out. I have the btr3 cam, 92 fast ported stock heads.
Thanks for any advise
And does anyone know if I would have to get a re tune adding in the hi flo's? Currently the rear o2's are tuned out. I have the btr3 cam, 92 fast ported stock heads.
Thanks for any advise
