well if you gut everything. Be prepared to hear rasp from your exhaust:blackeye:
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gutting the pre-cats and main..
- Thread starter dingleberry
- Start date
well if you gut everything. Be prepared to hear rasp from your exhaust:blackeye:
dingleberry
CEG'er
well if its to raspy i'll get a new highflow cat 
but if it meets my needs on what i like! then raspy we go! haha..
but if it meets my needs on what i like! then raspy we go! haha..gutting everything sounds like crap
Redlineracer12
Addicted CEG'er
It will if you have aftermarket exhaust. But with stock cat-back exhaust (at least on my cougar) it doesn't sound bad.
dingleberry
CEG'er
well i have borla exhaust.. the muffler and resonator with the tip.. if it sounds bad with the muffler i'll throw the resonator on
yamaha racer 686
Hard-core CEG'er
well instead of starting my own thread which waste space. id like you opinions on
headers into a opt y pipe. then into a highflow cat then a mag resonator back to a bassini exhaust. ?
shouldnt rasp should it
headers into a opt y pipe. then into a highflow cat then a mag resonator back to a bassini exhaust. ?
shouldnt rasp should it
Redlineracer12
Addicted CEG'er
It's going to sound nasty either way IMO. The only reason the stock exhaust is decent is because the muffler is so quiet.well i have borla exhaust.. the muffler and resonator with the tip.. if it sounds bad with the muffler i'll throw the resonator on
Should be fine with a high flow cat and resonator. I have MSDS headers and Y with a high flow cat into a resonated borla exhaust with no rasp. It's also pretty quiet (for a full aftermarket exhaust anyways).
Bradness
CEG'er
My exhaust consists of MSDS headers, custom fab'd Y pipe, 100 cell/inch high flow cat, and a hybrid SVT exhaust. The res was removed and everything fore of it is straight (no kinks or bends). The stock SVT mufflers are intact but I had bad rasp. I added a straight through res and still have rasp, but significantly less and only betwen 3-4K RPM.
My past experience suggests that rasp is caused by a combination of factors (this is the third or fourth system I've had). Headers have more rasp than gutted precats. This is likely due to the fact that precats are heavy wall stainless with heat shields. Removing the stock res on an SVT exhaust and replacing it with straight pipe introduces rasp also. The stock Y pipe reduces rasp also.
I've found the most pleasant sounding systems from a tone, rasp and DB level use a large centre mounted muffler with nothing else. If it's too loud, you can add 2 small resonators where the stock mufflers are. We have emisssion testing here, so having a fully functioning main cat is an absolute necessity.
My past experience suggests that rasp is caused by a combination of factors (this is the third or fourth system I've had). Headers have more rasp than gutted precats. This is likely due to the fact that precats are heavy wall stainless with heat shields. Removing the stock res on an SVT exhaust and replacing it with straight pipe introduces rasp also. The stock Y pipe reduces rasp also.
I've found the most pleasant sounding systems from a tone, rasp and DB level use a large centre mounted muffler with nothing else. If it's too loud, you can add 2 small resonators where the stock mufflers are. We have emisssion testing here, so having a fully functioning main cat is an absolute necessity.
RandyCSVT
Hard-core CEG'er
keep the main cat. A car with no cats = super stinky.
GIVE A HOOT DON'T POLLUTE!!!!!
GIVE A HOOT DON'T POLLUTE!!!!!
Don't gut the cats.. poor kitties!!
er hmm.. car-cats.. right!
If your main cat is failed, get another. Gutting and test-pipes on daily driven cars are lame. Pre-cats are arguably over-kill and do little good over a properly functioning catalyst. Unless you have a proper place to dispose of the inner-matter of the precat, don't do it. Neither your driveway or trash can which goes to the landfill is the proper place for carcinogenic waste!
/end rant
er hmm.. car-cats.. right!
If your main cat is failed, get another. Gutting and test-pipes on daily driven cars are lame. Pre-cats are arguably over-kill and do little good over a properly functioning catalyst. Unless you have a proper place to dispose of the inner-matter of the precat, don't do it. Neither your driveway or trash can which goes to the landfill is the proper place for carcinogenic waste!
/end rant
1fastfucus
CEG'er
- Joined
- Dec 15, 2007
- Messages
- 49
Don't gut the cats.. poor kitties!!
er hmm.. car-cats.. right!
If your main cat is failed, get another. Gutting and test-pipes on daily driven cars are lame. Pre-cats are arguably over-kill and do little good over a properly functioning catalyst. Unless you have a proper place to dispose of the inner-matter of the precat, don't do it. Neither your driveway or trash can which goes to the landfill is the proper place for carcinogenic waste!
/end rant
lol ---- no pre-cats, 2 1/4 pipe welded through stock main cat housing (so the echo from the exhaust gas tumbling around inside wont happen), trubendz y-pipe, 2.5" custom mandrels off cat and out rear drivers jack point. No mufflers or cats. I have no odd smell and rasp is existant only above 5k... its just really really loud, sounds like a cheeta or something
lol ---- no pre-cats, 2 1/4 pipe welded through stock main cat housing (so the echo from the exhaust gas tumbling around inside wont happen), trubendz y-pipe, 2.5" custom mandrels off cat and out rear drivers jack point. No mufflers or cats. I have no odd smell and rasp is existant only above 5k... its just really really loud, sounds like a cheeta or something
fucus..get a sound clip if you can. I would really hate/love to hear this:laugh:
1fastfucus
CEG'er
- Joined
- Dec 15, 2007
- Messages
- 49
as soon as the weather gets good enough to drop my friend off in the industrial parkway and film some fly-by's .. they will b on my youtube