Forgive me, for I have sinned...

[youngcamarokid]

I did what many might think stupid.

I drilled a 3/8" hole in the pipe after the cat/before the muffler (is it called the I pipe?).

The sound at idle is awesome, deep and gargly..pretty cool. There's a noticable sound difference (in volume) between idle and 2500. above 2500, can't notice a difference.

Pretty cool, what do you guys think?

[Devilboy28]

I actually cut my exhaust OFF where you drilled that hole and chucked everything in the garbage. It sounds mean as hell!

[C.O.Jones]

For where you live that has got to be one of the least intelligent idea's I've heard. King, Pierce and Snohomish county have some of the most strict Emissions laws I have ever had the misfortune of seeing.
Your car is what, a 97? Have you already undergone emissions? If so, then you are fine for 2 years. If not I would be worried when you do go in. You might pass, but the extra noise is going to cause questions....

[youngcamarokid]

<blockquote>quote:</font><hr>Originally posted by C.O.Jones:
For where you live that has got to be one of the least intelligent idea's I've heard. King, Pierce and Snohomish county have some of the most strict Emissions laws I have ever had the misfortune of seeing.
Your car is what, a 97? Have you already undergone emissions? If so, then you are fine for 2 years. If not I would be worried when you do go in. You might pass, but the extra noise is going to cause questions....<hr></blockquote>

I believe that the cat controls emissions, and the muffler controls sound regulations...no?

[black34v6]

yea but...see all the exhaust is going out that hole..


problem with that being that emissions testing involves a "sniffer" that sits in your exhaust. they WILL NOT climb under your car to put the sniffer in, rather they will fail you for messing with the exhaust (problem we have here in CA).

you need to get a real cutout there so you can cap it when you get emissions tested so the sniffer will work and you wont fail, and then uncap it after you are done (a safe distance from the smog testing station)

-R

[C.O.Jones]

OK, THIS WILL END IT HERE AND NOW.

I sent an e-mail off to the Emissions Check Program here (This only applies to WASHINTON STATE)

This is the response and original e-mail:


-----Original Message-----
From: Olsen, Tom [mailto:THOL461@ECY.WA.GOV]
Sent: Thursday, April 24, 2003 4:28 PM
To: 'Rob Schafer'
Subject: RE: Exhaust Pipe


Beside the chance that you will be having exhaust filtering into the
vehicle, you will be diluting the exhaust sample, which is a check that it
made during the emission test. The test contractor is looking for an exhaust
sample that is at least 6% CO2, if the leaking exhaust is diluted by
drilling a hole you may not make the 6% reading and not be able to test your
vehicle.
Tom Olsen,. Unit Manager
NWRO, Emission Check Program

-----Original Message-----
From: Newton, Sandra A.
Sent: Thursday, April 24, 2003 1:18 PM
To: 'Rob Schafer'
Cc: Raymond, John C.; Olsen, Tom; Merkl, Fritz; Gamble, Kenneth Alan (ECY);
Beitel, Judy
Subject: RE: Exhaust Pipe


Hi Rob, I am forwarding your question on to our field staff. One of them
will be in touch with you. This is more technical than I am comfortable
with to answer. Thanx for checking though.

-----Original Message-----
From: Rob Schafer
Sent: Thursday, April 24, 2003 11:31 AM
To: ECY DL EMISSION CHECK QUESTION
Subject: Exhaust Pipe


Hello, I have a question concerning the exhaust vs emissions.

I am currently in an argument with a friend. He drilled a 3/8" hole in the
exhaust of his car in the I-pipe between the catalytic converter and
muffler. He did this for sound.

Will this effect his emissions check later this year, or is this just a
sound quality issue and what reprocussions will he face for this?

Thanks,

Robert Schafer

[TrixTeR]

hey if you put a "U" clamp or whatever they are called over the hole, would it entirely cover it? That would work for an emissions test i would think.

[12secondv6]

Many old schoolers did this to get some extra sound from their car's.

Would I do it? Nope.
To each their own.

[youngcamarokid]

Hey...I figure if I fail...it's a great excuse to buy a new catback [img]graemlins/evilgrin.gif[/img] [img]graemlins/evilgrin.gif[/img]

[C.O.Jones]

Yah, and as long as it's over $150 and you still fail you get a waiver from the emissions!

[chas]

slap a stainless steel band clamp over the hole before going for the emissions test. i have seen these at the local pep boys and summit racing carries them as well. but if cash is tight you could just get a coupling for your pipe size, split it lengthwise, and u-bolt it over the hole. that would probably cost about $6.

[Ttop34]

If you like the sound then maybe you should have done something like this: http://www.ls1.com/link_exhaust.html

You still have the whole except it's going out the tail pipe like it should. However if you have the muffler with only one exit then maybe do something like Matt did and put a cutout at that bend before the muffler, it can be capped for emissions testing or to return the sound to stock. Here's a video of it if you want to see and hear: http://www.angelfire.com/tx5/onequic...deo/cutout.mpg
Notice it is Angelfire so if it doens't work then it means too many people have accessed it recently, wait and it will work again maybe.

[pigglyroot]

yeah, exhaust leaks sound real cool :rolleyes: [img]graemlins/thumbsdown.gif[/img]