emmisions solution! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pissonNOS · 03-19-2003, 12:02 AM

The other day me and a buddy were pissin around with a muffler and where we are from you cant run straight pipes! so on the seam on the muffler we carefully took it apart cut the insides out and just stuck a piece of pipe in it now we have straight pipes with the look fo a muffler

have been pulled over but they see a muffler and then well what can u do? i thought why could you guys in the states that have emmisions problems do the same thing with your converters would work i think?

Longhorn Man · 03-19-2003, 12:51 AM

It wouldn't work since most places that worry bout the verter actually put a sniffer in the tail pipe to measure the polution comming out.
And as for doing that to your muffler...there are many ways for cops to give you exhaust tickets. (at least here in the U.S.)
Altered exhaust.
Loud Exhaust
disturbing the peace
Exsesive noise
I worked in a town as a teen just south of here (grove city for those who are familiar) and they were a real pain about everything. They were actually given a decible meeter and would test the noise coming out of your pipes.
More than one way to skin a cat.

**kwmech** · 03-19-2003, 12:55 AM

Cannot do that with a convertor because of the tailpipe test. The new convertors are real efficient and if it comes up 'dirty' they will make you replace it anyway, but you can run a system with a high flow convertor and no muffler.

pissonNOS · 03-19-2003, 01:08 AM

ya see we dont worry bout converters here in alberta so i didnt know what ur stipulations were the truck we did it to was a diesel sounded like **** but wasnt much louder

1969 GMC · 03-19-2003, 03:46 AM

One of my ricer friends with a Honda CRX thought it would be a good idea to hollow out the cat to gain more power through improved exhaust flow. It ended up creating a bigger buildup of backpressure that actually dropped his power (it was noticeable).
He already had a Maxwell (coffee can) Muffler on it, so I couldn't notice any sound change.

03-19-2003, 12:02 AM	#1
pissonNOS senior member Join Date: Feb 2003 Location: fort macleod alberta Posts: 2,770	emmisions solution! The other day me and a buddy were pissin around with a muffler and where we are from you cant run straight pipes! so on the seam on the muffler we carefully took it apart cut the insides out and just stuck a piece of pipe in it now we have straight pipes with the look fo a muffler have been pulled over but they see a muffler and then well what can u do? i thought why could you guys in the states that have emmisions problems do the same thing with your converters would work i think? __________________ 69 GMC bagged

03-19-2003, 01:08 AM	#4
pissonNOS senior member Join Date: Feb 2003 Location: fort macleod alberta Posts: 2,770	ya see we dont worry bout converters here in alberta so i didnt know what ur stipulations were the truck we did it to was a diesel sounded like **** but wasnt much louder __________________ 69 GMC bagged

03-19-2003, 03:46 AM	#5
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	One of my ricer friends with a Honda CRX thought it would be a good idea to hollow out the cat to gain more power through improved exhaust flow. It ended up creating a bigger buildup of backpressure that actually dropped his power (it was noticeable). He already had a Maxwell (coffee can) Muffler on it, so I couldn't notice any sound change. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

03-19-2003, 12:51 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	It wouldn't work since most places that worry bout the verter actually put a sniffer in the tail pipe to measure the polution comming out. And as for doing that to your muffler...there are many ways for cops to give you exhaust tickets. (at least here in the U.S.) Altered exhaust. Loud Exhaust disturbing the peace Exsesive noise I worked in a town as a teen just south of here (grove city for those who are familiar) and they were a real pain about everything. They were actually given a decible meeter and would test the noise coming out of your pipes. More than one way to skin a cat.

03-19-2003, 12:55 AM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,641	Cannot do that with a convertor because of the tailpipe test. The new convertors are real efficient and if it comes up 'dirty' they will make you replace it anyway, but you can run a system with a high flow convertor and no muffler.



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