siringo
Member
Got the 40 booked in to have a few items removed next week.
Anyone running without a cat and muffler? Wondering how noisey it is???
Anyone running without a cat and muffler? Wondering how noisey it is???
No Cat, no Muffler
- Thread starter siringo
- Start date
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Cobez
Member
Im running an aftermarket turbo back exhaust WITH cat and NO muffler. Pretty loud!! Id personally keep the cat myself.
navaranewb
Member
keep the cat as there are BIG fines if you are caught by the 5.0
siringo
Member
I know what you're saying, but if you only gut the cat, how would anyone ever know it has no innards? You'de have to disassemble it.
Thanks for the info.
navaranewb
Member
I know what you're saying, but if you only gut the cat, how would anyone ever know it has no innards? You'de have to disassemble it.
Thanks for the info.
gutting is the better option but keep in mind this will add rasp to the noise. Easily to tell.
If you are going to gut it run a pipe through it as this will improve flow aswell
d22dave
Member
Gutting cats, that's messy and it upsets the greenies. Straight through dump pipe and a muffler on my d22
superiorcruiser
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i have no cat no mufflers and 3 inch straight thru..
not too loud at all..go for it
not too loud at all..go for it
siringo
Member
Thanks guys.
siringo
Member
Well the cat and muffler are gone.
The thing I noticed the most is the increase in diesel exhaust pong. The 40 now smells more like a diesel, like a real truck now, that cat must have worked.
Second thing is probably that it's more responsive to throttle at low speeds.
Third, I think turbo lag is very slightly reduced.
Fourth, it's a little more 'droney' than before, but still very quiet, which is great, I'm past noisey vehicles. Still no turbo whistle.
The verdict. I think the 40 has benifitted from the change, not in a huge way, not as great as I was hoping but I'm fairly sure it's an improvement.
Would I recommend it? If your muffler is burnt out and needs replacing, yep, don't replace the muffler, just put some pipe in. What about the cat? I don't know, I'll leave that up to you.
The thing I noticed the most is the increase in diesel exhaust pong. The 40 now smells more like a diesel, like a real truck now, that cat must have worked.
Second thing is probably that it's more responsive to throttle at low speeds.
Third, I think turbo lag is very slightly reduced.
Fourth, it's a little more 'droney' than before, but still very quiet, which is great, I'm past noisey vehicles. Still no turbo whistle.
The verdict. I think the 40 has benifitted from the change, not in a huge way, not as great as I was hoping but I'm fairly sure it's an improvement.
Would I recommend it? If your muffler is burnt out and needs replacing, yep, don't replace the muffler, just put some pipe in. What about the cat? I don't know, I'll leave that up to you.
