What a diff.

[Rick V]

I drove Bill P's car today (the one he bought from Harold) that thing is strong. Our cars are almost identical (compression numbers) with one exception, he has a cat by-pass pipe. I figured the hype of added power is like most advertised things, was a joke. Boy was I wrong, it added a noticable amount of umph. I have a call in to my guy at Pelican, I must have one. For once I was impressed with something delivering what it says. The added growl will be cool as well.
Has anybody else seen this light?

[Trak Ratt]

It does seem to make a difference! but save the $$ on the test pipe and jump into a set of SSIs. IMO biggest bank for the buck for CIS smog motors. My ’82 SC passed it’s last “emissions test” last year ;)

[Rick V]

I looked into that but I am a poor mechanic and the funds just arn't here at this time. Smogging isn't an issue for me, we don't sniff here and I have an inspection license anyway. :) Sometimes it's good to be me, just not when looking for upgrde parts.

[GM2006]

A friend has a Z06 with all that cat by-pass X pipe stuff, and his car roars down the road. I like driving it very much.

[Trak Ratt]

A friend has a Z06 with all that cat by-pass X pipe stuff, and his car roars down the road. I like driving it very much.CIS is old tech, and in this case 3 ltr., Z06 has lots more CIs and technology. Apples to papaya

[michael lang]

I have a Fabspeed on my car attached to a Bursch exhaust. Nice sound when under load @ 4500 and up, outside that not really any difference noticed. I've been to the website, definitely didn't feel like the gains claimed. Maybe my expectations were set to high. Thinking when it comes time for a rebuild that I'll put on a set of SSI's w/an M&K pipe. I hear Ben does a real nice job with those and I absolutely love the sound that set up makes.

[MatP]

Michael,
On our Carreras, installing the bypass pipe alone is not enough - you also have to tell the DME that the pipe is there. Chipping the Motronic will definitely take advantage of the fact that you've removed the catalyst. You will notice a definite increase once you've added the chip.

SSI's are said to be slightly too constricting for the 3.2. However, many Carrera owners run them with success. They way I see it, a chip and a bypass pipe are much cheaper than SSIs and produce almost exactly the same dyno results.

[kaefer]

Michael,
On our Carreras, installing the bypass pipe alone is not enough - you also have to tell the DME that the pipe is there. Chipping the Motronic will definitely take advantage of the fact that you've removed the catalyst. You will notice a definite increase once you've added the chip.

SSI's are said to be slightly too constricting for the 3.2. However, many Carrera owners run them with success. They way I see it, a chip and a bypass pipe are much cheaper than SSIs and produce almost exactly the same dyno results.

I'm thinking about taking my 3.2 one step further - adding 993 HE's, test pipe, and Steve Wong chip.

Quote from Tyson Schmidt:

SSI's only have a 35mm I.D. So the 3.2 exhaust port, which is 38mm, and opens up to 40mm for the stock HE's sleeve then has to neck down to 35mm. Talk about a nightmare for high rpm flow.

The 993HE's have a 38mm I.D. since the 3.2 and 3.6 all have the same size exhaust port size of 38mm. To address the issue of the 40mm recess, I contour the 993 HE's out to 40mm when I grind/port the inner welds away after rotating the flanges, then make the driver's side HE match the right side.

Rick - These would work on a 3.0 as well, though you'd have to change your muffler...

[Rick V]

Test pipe ordered overnight shipping will be on Lanna by this time tomorrow. Just in time to try and get pulled over on a Friday night.
Gotta love those 25 year old cat bolts. HAHAHA I have tools of mass destruction and I used them to cut off the nuts and push the bolts out. No hammer required. :(
I shined my flash light in the converter after the removal and I could get no light through it. For those of you who have seen my flashlight I would call that clogged.

[Trak Ratt]

If you can’t go to an aftermarket muf now your eyes open for a used Carrera one. Supposed to be 10% better flow. Maybe a Dorki has one in the back of their garage ;)

[Jazzbass]

If you can’t go to an aftermarket muf now ...
I tried to go for an aftermarket muf once, but the wife got pissed.

[Rick V]

I tried to go for an aftermarket muf once, but the wife got pissed.
Too funny You slay me! :lol:
I have the Bursch muffler already, Beth bought it for me for christmas last year..........yeah I know and before you ask her sister is married.

[Trak Ratt]

Too funny You slay me! :lol:
I have the Bursch muffler already, Beth bought it for me for christmas last year..........yeah I know and before you ask her sister is married.
We used the similar set up but with a Borla muf ;) for years. It pulled 170 HP at the wheels on Curry's dyno too. Liked the sound, power, and that it would set off car alarms idling through the parking garage at work. Only replaced with SSIs last year.

[michael lang]

Matt, I agree, chipping the DME would definitely add to the exhaust change and would most likely be the difference between having a descent set up and an astounding set up. I'm kinda into doing things in stages so that I get to know and understand the benefit of the various upgrades that I do on my car. That way as my car's characteristics and predictability become more and more familiar, I'll become a smoother & better driver w/out being overwhelmed by a massive number of upgrades. Plus it's easier to explain to the boss why I have to spend $XXXX.XX on something that for the most part sits idle in my garage. It was a good summer driving wise, I was told by a couple of guys I got the front tire off the ground while autocrossing on Sunday in the rain. It may be time to move to the next thing.

[Rick V]

Yup got some added "umph" I finished up last night and had a good time irritating some of the old neighbors. It isn't much louder in the car and I have yet to hear her from the spectator side.
I went over to dads last night and he told me he could "feel" me coming down the road. :) I also didn't tell I had done anything, so it must be loud. Lets see if the Charlottesville cops pull me over for the illeagal exhaust. They like to do that with the rice crowd.

[tdatk]

Yup got some added "umph" I finished up last night and had a good time irritating some of the old neighbors. It isn't much louder in the car and I have yet to hear her from the spectator side.
I went over to dads last night and he told me he could "feel" me coming down the road. :) I also didn't tell I had done anything, so it must be loud. Lets see if the Charlottesville cops pull me over for the illeagal exhaust. They like to do that with the rice crowd.

Good for you Rick. I love my bypass as well. We now have very simular setups on our cars. I really want to hear yours wail through the back roads so I can get the effect. I just put on some Goodyear eagle F1 GS 03's yesterday. I read that they are better street tires than autocross, we'll see. Props to Ultimate Automive Group here in Winchester. They did a respectiable job mounting them. I was impressed that they actualy torqued the lug nuts and even polished my bling wheels when they were done. They are the perfered installer for tire rack.
Happy Motoring!

Tim

[The Donkey]

Nice job Rick. The one I am getting has the cat bypass and the Fabspeed 1in-2out so it is probably equally loud if not louder.

[kaefer]

Lets see if the Charlottesville cops pull me over for the illeagal exhaust. They like to do that with the rice crowd.

Not likely....unless you're driving like a dumbazz through C'Ville...

;)

[kaefer]

Nice job Rick. The one I am getting has the cat bypass and the Fabspeed 1in-2out so it is probably equally loud if not louder.

So you found a car?

[Rick V]

Not likely....unless you're driving like a dumbazz through C'Ville...

;)
You mean like doing 100mph with a cup of coffee and talking to you on the cell phone? Not me, I am an upstanding member of the comunity................remember :roll:

[Rick V]

Beth just did a "fly-by" man that thing is loud and smooth, I now have a severe case of "automotive wood"
I have also found that I was running way too fat, I have a temp fix in place but I need to spend some more money.

[kaefer]

How fat is running too fat?

12.8 - 13.2 AFR at medium and WOT is best for performance.

14.7 at idle, light throttle, and decel is good for emissions and fuel economy.

Get that thermo switch replaced and start tuning!
;)

[hkspwrsche]

Just curious rick but, every time I put one of those things on I feel a difference but, I also gut the old cat for the heck of it and they always have a little melted spot started. Did you keep the cat ? bang it through just for investigative purposes ;) and see if it was clogging?

(anyone wanna buy a gutted cat?) OFF ROAD USE ONLY (: