[fzjconvert]

Originally Posted by baktasht

All depends on who you're asking and Ebag333, any preferences on the exit location? Others?

IMO the exit shoud turn out right behind the rear tire. The reason when it is running straight out the back it will snag if you have to back off a steep hill or obstacle. Go a head, ask me how I know!

Also, I am still working out getting up to Portland.

[Ebag333]

Originally Posted by fzjconvert

IMO the exit shoud turn out right behind the rear tire. The reason if it is running straight out the back it will snag if you have to back off a steep hill or obstacle. Go a head, ask me how I know!

Sounds good to me. I know I've munched my tailpipe a bit (flattened the bottom a tad, not much, but a bit).

I would also like it out the side so that I can leave my lift gate open while it's running and have less exhaust pouring in. With the current location, if the wind is right the exhaust will get pushed into the truck.

I might do what I've seen others do and have it route through the bumper. But that'll involve cutting off the end and running a bit of flex pipe anyway, and out the side is still the ideal location.

So yeah, what fzjconvert said!

[baktasht]

Who wants teaser pics?

[baktasht]

We ended up using a Aero Turbine Stealth muffler. It is a high flow, long body muffler. It's 304 stainless steel with 2.5" in/out. The catalytic convertor we're using is a large body Magnaflow/Shwartz high flow catalytic convertor with 2.5" in/out. We were able to get everything tucked up pretty nicely. The piping after the catalytic converter is over the frame, and the exit is out the right side behind the rear wheel. Keep in mind this is only the prototype and tack welded in most spots. The final production assembly will look cleaner and more "finsihed".

I'll post more updates as they become available.


Pics of the prototype:

[dwrtoy]

looks real good! do you plan on creating a jig for each section? V-band clamps would be real nice...

[Sporin]

shiny

[zombified]

i'd be interested to hear a soundclip after it is fully welded.

i'd also be interested to hear what the final pricepoint will be. for CARB states, is the cat stamped/certified/whatever?

[fzjconvert]

Very cool! How did you go about the Y? I like how it is out behind the back tire!

[Photo_Cruiser]

For Carb states like in CA, I was told it has to be like stock, you HAVE to have 2 in-line cats, by law...my shop looked up my 97, and said there was no single cat that would pass, had to be two, by law...in good ol' CA anyhow. So, 2 new cats, 2 new bungs, all done, 900 bones...ouch.

of course that's in Marin, and I didn't really shop around...my bad.....time is money some times....

[fzjconvert]

Originally Posted by Photo_Cruiser

For Carb states like in CA, I was told it has to be like stock, you HAVE to have 2 in-line cats, by law...my shop looked up my 97, and said there was no single cat that would pass, had to be two, by law...in good ol' CA anyhow. So, 2 new cats, 2 new bungs, all done, 900 bones...ouch.

of course that's in Marin, and I didn't really shop around...my bad.....time is money some times....

Doesn't mean that you couldn't fine tune your exhaust between smogs. Then just put it back when you have to smog! Kind of my plan. In fact I didn't take my exhaust over the frame because it was time for me to smog. Then the shop I went to for my smog didn't even look at my set up.

[Sporin]

does this setup convert the 93's side-by-side cats to the single, aftermarket cat? what's the y-pipe/collector look like?

[Ebag333]

I'm going to go take a look at it today sometime hopefully. More/better pics and detailed descriptions coming soon.

[baktasht]

Originally Posted by dwrtoy

looks real good! do you plan on creating a jig for each section? V-band clamps would be real nice...

We can do v-band but it would add to the price. For now we're sticking with standard bolt on pieces and slip joints. Jig's are being made for each section and for the entire assembly (only way to do it right )

Originally Posted by zombified

i'd be interested to hear a soundclip after it is fully welded.

i'd also be interested to hear what the final pricepoint will be. for CARB states, is the cat stamped/certified/whatever?

We'll have some sound clips available along with a dyno comparison to show any gains. As far as passing emissions tests it'll pass just fine. Any state that does a "sniffer" test will be fine. And from what I know most places (if not all) don't care what brand catalytic convertor you are using as long as it is filtering properly and doing it's job, what they care about for the most part (from what I've seen anyway) is that you pass the sniffer test. I may be wrong on this, but personally I've lived in California as well, and never had problems on modified vehicles I owned while I was there as long as they passed the sniffer test.

Originally Posted by Sporin

does this setup convert the 93's side-by-side cats to the single, aftermarket cat? what's the y-pipe/collector look like?

I haven't seen the 93/94's setup in person. Don't the headers come out completely differently on them?

[dwrtoy]

jig building...now thats dedication. Hell, it probably takeup most of my garage for a full length jig . i guess you could make it come apart though. cool deal anyway. post sound when you can. sell'em cheap <500 and they'll go like hotcakes.

[baktasht]

Originally Posted by dwrtoy

jig building...now thats dedication. ****, it probably takeup most of my garage for a full length jig . i guess you could make it come apart though. cool deal anyway. post sound when you can. sell'em cheap <500 and they'll go like hotcakes.

All our fab work is done by another facility. They do the fab work, jig building, computerized CNC bending and laser cutting, etc... We don't put out products that half-a$$'d

As far as the price point, it has not been determined yet, a lot of that will depend on the final production cost per unit will we'll have a better idea of next week. I can tell you tough that the <500 thing will not happen, not unless we outsource to china for production, which is tempting, but up until this point we have steered clear of that because the quality of metal they use is garbage and the QA is just not there for production in China either and you end up with lots of fitment issues especially with something that fits as tightly as this exhaust. With that said, we do keep our margins as small as possible and our prices as low as we can to get the community the best deal possible. We won't dissapoint

[sleeoffroad]

Originally Posted by Photo_Cruiser

For Carb states like in CA, I was told it has to be like stock, you HAVE to have 2 in-line cats, by law...my shop looked up my 97, and said there was no single cat that would pass, had to be two, by law...in good ol' CA anyhow. So, 2 new cats, 2 new bungs, all done, 900 bones...ouch.

of course that's in Marin, and I didn't really shop around...my bad.....time is money some times....

FWIW, we have recently had the same issues come up in CO. Sometimes you will get lucky, but they are clamping down. If the sticker says 2 cats, then it has to have 2 cats.

[fzjconvert]

Originally Posted by baktasht

We can do v-band but it would add to the price. For now we're sticking with standard bolt on pieces and slip joints. Jig's are being made for each section and for the entire assembly (only way to do it right )


We'll have some sound clips available along with a dyno comparison to show any gains. As far as passing emissions tests it'll pass just fine. Any state that does a "sniffer" test will be fine. And from what I know most places (if not all) don't care what brand catalytic convertor you are using as long as it is filtering properly and doing it's job, what they care about for the most part (from what I've seen anyway) is that you pass the sniffer test. I may be wrong on this, but personally I've lived in California as well, and never had problems on modified vehicles I owned while I was there as long as they passed the sniffer test.

California law change this year. You have to have the specific cat and number of cats listed for the particular vehicle. You can still have a high flow cat it just has to be listed for the vehicle. However, I went through all the hassle of complying with the new law. Which meant there was not enough room behind the second cat to go over the frame. Then the smog guy didn't even look at my set-up. I was so pissed! Anyway, you are correct the guy was more concerned with the sniff test. But if someone happened to find a smog guy that is a real prick it may be a problem for us Californians. I am not trying to discourage anyone, quit the contrary! Just, like the old cliché goes " for warned is for armed"

- Dave

[ripple]

What about dual exhaust? One cat on each line, there is already a header that splits it at the motor. The first thing you do to a chevy 6 is bolt on some fenton headers for more hp. The truck would sound amazing if you could fit it all underneath. Seems like the way to go if you really want to improve the system.

[ledgend80]

here in australia most people would say that beaudesert exhaust are the way to go for a bolt on system this is what i will be getting for the 80 seried 3inch manderal bent with dump pipe they can also modify it so it can run inside your chassis. from memory was about 1200 for the kit.have a look at them if you want
OpenX

[baktasht]

Originally Posted by ledgend80

here in australia most people would say that beaudesert exhaust are the way to go for a bolt on system this is what i will be getting for the 80 seried 3inch manderal bent with dump pipe they can also modify it so it can run inside your chassis. from memory was about 1200 for the kit.have a look at them if you want
OpenX

Looks like they do good mandrel bending work, but there's zero information regarding any specific exhausts on their site.

[Brian894X4]

Shoot, can't believe I missed this thread till now. I'm in Gresham...would definately be interested in a better exhaust. My stock set up still works fine, but I'm most interested in something that sounds better, so I'm eagerly awaiting any sound files.

Still looking for testbeds at a discount by any chance?

[Bruneti]

Could you show more detail of the connection to the stock Y-pipe? Are you making this a slip fit connection or completely replacing the stock Y-pipe? I am interested in what you're doing here.

I was considering putting a flange before my front cat so I could fab a new bolt-in cat section. I figured I would have to remove the stock Y-pipe to cut it and properly weld a 2-bolt or 3-bolt exhaust flange on.

[baktasht]

Originally Posted by Bruneti

Could you show more detail of the connection to the stock Y-pipe? Are you making this a slip fit connection or completely replacing the stock Y-pipe? I am interested in what you're doing here.

I was considering putting a flange before my front cat so I could fab a new bolt-in cat section. I figured I would have to remove the stock Y-pipe to cut it and properly weld a 2-bolt or 3-bolt exhaust flange on.

It will be a setup that can be ordered as a full setup all the way back including high flow muffler and high flow catalytic convertors. Or you can order it as just the various sections such as just the Y-pipe section or just as a catback, or just as a straight pipe exhaust without any mufflers/cats. I will have more details and pictures for you guys later this week.

[Ebag333]

Originally Posted by Brian894X4

I'm in Gresham

One of these days I'm gonna have to meet up with ya. My in-laws live on the other side of Portland, and I've been wanting to see your expedition rig for a while now.

Originally Posted by baktasht

It will be a setup that can be ordered as a full setup all the way back including high flow muffler and high flow catalytic convertors. Or you can order it as just the various sections such as just the Y-pipe section or just as a catback, or just as a straight pipe exhaust without any mufflers/cats. I will have more details and pictures for you guys later this week.

As baktasht said, it looks like you'll be able to order pretty much whatever you want. You can keep the OEM Y-Pipe and cats, or just the OEM Y-Pipe and get new cats.

The exhaust looks phenomenal, I'm pleasantly surprised at how well it tucks up in there.

The cat will be the rough equivalent of the OEM cats if you've done a cut and turn job on them (positioned horizontally rather than vertically). You won't gain any more clearance there if you've already done a cut and turn, but you really won't be hitting your cats much anyway if you've done that.

The muffler tucks up very nicely. While I figure it's probably still possible to whack it, it'll be a lot harder as it's up above the frame rail and the gas tank.

It looks like it'll be broken down into lots of chunks, which should make replacing one or two sections a breeze, should you somehow manage to break them. Very ideal for what we do.

No pics as when I showed up it was torn all apart. I did get to see it on the truck earlier that day, but didn't have the opportunity to take pics then.

[snafubar]

is this going to to include the two down tubes from the exhaust manifold? I have a 1994 and they have two O2 sensors, one on each down tube.

[Ebag333]

Originally Posted by snafubar

is this going to to include the two down tubes from the exhaust manifold? I have a 1994 and they have two O2 sensors, one on each down tube.

The 1FZ ODB-I trucks will need a different Y pipe, etc. So far they have only built the exhaust for 1FZ ODB-II trucks.

Once I get it, I will do some comparison with some club mates that have ODB-I trucks, and see how much work it would be to adapt it. My gut feeling is that they may be able to do a different Y pipe for the ODB-1 trucks, but there's more to it, especially if you haven't disabled the PAIR system.

[Atoyot1031]

Originally Posted by sleeoffroad

FWIW, we have recently had the same issues come up in CO. Sometimes you will get lucky, but they are clamping down. If the sticker says 2 cats, then it has to have 2 cats.

Depends what part of CO yer in. In most of the state (ironically, outside of where all the pollution is) there aren't any emissions tests/inspections at all!

[baktasht]

Originally Posted by Ebag333

The 1FZ ODB-I trucks will need a different Y pipe, etc. So far they have only built the exhaust for 1FZ ODB-I trucks.

Once I get it, I will do some comparison with some club mates that have ODB-I trucks, and see how much work it would be to adapt it. My gut feeling is that they may be able to do a different Y pipe for the ODB-1 trucks, but there's more to it, especially if you haven't disabled the PAIR system.

I don't have a pre-95 truck here to compare, so I'm not sure what changes would need to be made to the current setup. But I'm sure we can get it to work fairly easily with a few small changes.

[baktasht]

More pictures of the development process:



and a possible addition to the current layout:

[Ebag333]

Is that flex tubing? Or something to additionally dampen the sound?