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Secondary cat bypass installation tips?

Old Dec 24, 2008 | 07:18 PM
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Secondary cat bypass installation tips?

Has anybody installed these themselves? I'm working on that right now and there is no room to get the top nut on the flange where the secondary cat bolts to the primary. I can only get in there with a 1/4" ratchet and then there isn't enough room to move it! Tips?!

Thanks.
 
Old Dec 24, 2008 | 08:41 PM
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Really long extension from the top
 
Old Dec 24, 2008 | 10:17 PM
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I just finished trying to go through the wheel well. What an ordeal that was! I removed the lining thinking there would be a bunch of openings back there for an easy go. WRONG! There are no access points behind the fender lining. After spending about an hour simply trying to get the lining back in I got the lining "good enough" and put everything back together. Think I'll try and find a shop that doesn't mind breaking federal laws. This vehicle is certainly a PITA to work on.
 
Old Dec 24, 2008 | 11:25 PM
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Originally Posted by huskyfan23
I just finished trying to go through the wheel well. What an ordeal that was! I removed the lining thinking there would be a bunch of openings back there for an easy go. WRONG! There are no access points behind the fender lining. After spending about an hour simply trying to get the lining back in I got the lining "good enough" and put everything back together. Think I'll try and find a shop that doesn't mind breaking federal laws. This vehicle is certainly a PITA to work on.
haha.. I just bought a Fabspeed Bypass from a member on here. I was GOING to install, but after your ordeal, maybe I'll get it installed by someone with a bit more experience. Go to Cantrell Motorsports in Kirkland/Totem Lake..., in fact lets go there together. PM me.., I'm waiting for mine to arrive anytime now.

Bojan
 
Old Dec 24, 2008 | 11:26 PM
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You got an awesome deal on that. I saw it in the FS section.

Thanks for the recommendation. I'll give them a call. The install is straightforward, but if you can't get to that top nut on both sides then there's nothing you can do. All of the modifications to my other vehicle were done by me. I guess I got spoiled with the easy accessibility that domestics seem to have
 
Old Dec 25, 2008 | 03:38 AM
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There is no federal or state law issue. The secondary cats are after the sensor and are for noise control only. It is possible yourself with the correct extension
 
Old Dec 25, 2008 | 12:37 PM
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I thought it was illegal to remove a functioning catalytic converter before X amount of miles? And even then it's supposed to be replaced with another one...

I'm sure it's possible to do yourself, and I have around 3 feet worth of extensions, but it seems like more trouble than it's worth.
 
Old Dec 25, 2008 | 03:22 PM
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The law relates to the emission control system. The primary cat takes care of that, the secondary cats do nothing. I have had many state inspections with no problem.
 
Old Dec 25, 2008 | 03:29 PM
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The secondary cat is a catalytic converter nonetheless. The law applies to all catalytic converters, regardless of if you can pass emissions without it.
 
Old Dec 25, 2008 | 05:12 PM
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nope just the exhaust output. The secondary cat were not put on for emissions
 
Old Dec 25, 2008 | 06:16 PM
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Then is it not a cat at all? Maybe a resonator? Cats are used for emissions purposes. They're extremely expensive, so why use more than you have to? And it is illegal to tamper with any properly functioning catalytic converter unless you have reason to, and then only to replace it. I believe the fine is $25,000 if you're caught. I think it's moreso meant for shops.
 

Last edited by huskyfan23; Dec 25, 2008 at 06:19 PM.
Old Dec 25, 2008 | 07:27 PM
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Originally Posted by huskyfan23
Then is it not a cat at all? Maybe a resonator? Cats are used for emissions purposes. They're extremely expensive, so why use more than you have to? And it is illegal to tamper with any properly functioning catalytic converter unless you have reason to, and then only to replace it. I believe the fine is $25,000 if you're caught. I think it's moreso meant for shops.
From what I was told from 2 independent shops is that removing and installing the bypass pipes are illegal. HOWEVER, there are performance shops that are willing to do it. So maybe there is a fine line somewhere in the middle regarding it being a "noise" restraint rather than emission. But I believe its still illegal.

Cant wait to install it.. hahahaha.
 
Old Dec 25, 2008 | 07:36 PM
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I can't wait either. To quote Borat, "I so excite!"
 
Old Dec 26, 2008 | 01:54 PM
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Just put them on mine and it took a universal joint 12mm socket, followed by a couple of long extensions, then a 3/8" drive universal elbow, and then one more extension to get the socket wrench on it. This was for the right (passenger) side. For the driver's side I was able to use the same 12mm universal joint socket with a single extension and the socket wrench as there was enough room on that side with the bottom engine cover off to get that one off. These are Fabspeed pieces I got used.

Some other notes:
>You can get to everything and pull the stock pieces out by setting it at the highest ride height.
>I put penetrating oil on everything overnight. But I still broke every stud on the cats.
>Be sure to drop the rest of the exhaust rear of the clamps that hold the pipes on. Also remove the bottom engine cover.
>The gaskets on the flange that you're loosening up required a chisel and hammer to get separated.
>I also used a flat file to knock burrs off of each flange surface before getting them on.
>The bolts that come with the Fabspeed stuff are a real bear to get on. The nuts are self-locking and are a bit on the long side to get ready to take your time with those.
>On mine, the pipe on the right side had a gap larger than the left side did when clamping it to the rear piping. I also had a leak after a couple of tries to clamp it and pulling the bypass pipe into the clamp to make sure it was getting enough material to seal. I just put on some Permatex Copper RTV on it to help seal it up so we'll see how that holds.

I wouldn't recomend this install to anyone unless you have several extensions for a socket driver and one or more univeral joints to get the top two bolts off. They are every bit a pain in the rear as everyone else has said and I also do my own wrenching in general as well as engine rebuilds on my racebikes. A good helping of patience and having extra time would be a good idea. It took me about 2.5 hours to do it all.
 
Old Dec 26, 2008 | 02:36 PM
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Okay Head, but how does it sound?! I am looking into getting these for my 04 CTT and wondered if it was good enough without doing the mufflers.
 

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