Removal of secondary cats only (no muffler delete with it)
#1
Removal of secondary cats only (no muffler delete with it)
So I did a search and I can't seem to find any experiences with just the secondary cats removed, seems everyone does it in conjunction with muffler deletes, which I think is just too loud for my tastes. Has anyone removed only the secondary cats?? Does this really change the sound or increase performance at all??
Thanks and apologies in advance if someone posts a link with the answers, I just couldn't find it !
Thanks and apologies in advance if someone posts a link with the answers, I just couldn't find it !
#4
Cool, but from what I understand there would be no point adding X pipe because the exhaust isn't true dual right? So would you just weld straight pipes in where the cats are? The muffler/cat delete sounds like a beast but I just don't wanna hack my exhaust up that much :/
Low can you PM me more details on your project? That looks like a pretty awesome setup but I'm not sure how to find a shop good enough to do something like that.
Low can you PM me more details on your project? That looks like a pretty awesome setup but I'm not sure how to find a shop good enough to do something like that.
#7
Ok so pretty much like what lowrideraz posted? The best thing to do is hack the secondaries, replace with x pipe, then replace the Y pipe with mandrel bends??
I sent the thread he posted over to a custom muffler shop here that has pretty good reviews to see if they could do something like that. I doubt they are gonna be able to alter the mufflers like that though that looks crazy!
I sent the thread he posted over to a custom muffler shop here that has pretty good reviews to see if they could do something like that. I doubt they are gonna be able to alter the mufflers like that though that looks crazy!
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#12
Lexus Champion
#14
Lexus Champion
iTrader: (9)
Lou
I have attached the Dyno charts from two different ISFs, Mine and a friends. Mine has PPE headers, high-flow cats and a fabricated dual exhaust system with modified stock mufflers. His has PPE headers with a JoeZ exhaust and no cats. I have a Takeda Intake, he has an Injen. As you can see I'm putting out about 387HP and he's close to 400HP. But, I pull him on the bottom end, and he get's me on the top. I hope my graph help you with your decisions.
Lou
Lou
#15
Lead Lap
iTrader: (1)
Here is 3 videos of my car. Stock...deleted cats....deleted cats and mufflers....and SOON deleted cats, mufflers and headers.
In my opinion, the deleted cats and stock sounds identical. I could never tell a difference, so I chopped the mufflers. HUGE difference there. Enjoy!
In my opinion, the deleted cats and stock sounds identical. I could never tell a difference, so I chopped the mufflers. HUGE difference there. Enjoy!