Yellow 2010 Camaro spotted

[MP81]

Okay Jeff - ignoring the crossovers - will there be two pipes.

...I never really considered crossovers to make a system not true dual.

I just say anything that doesn't have a y-pipe is true duals.

[JoeliusZ28]

True dual exhaust has no crossover, X, Y, or H pipe...each engine bank has it's own exhaust and the left hand side never meets the right.

I don't think there is a vehicle made today that has true dual exhaust...that's actually a good question...maybe some of the rear engine cars are true duals...

I believe the last factory true dual exhaust on a F body was 1974...

True dual exhaust:

Jeff i completely understand the technicality, but most newer cars require crossovers for the computer to achieve optimum readings with the 02 sensors... and also crossovers scavenge, and therefore perform better.

I consider my truck to have true duals even though it has an H-pipe where the gases can mix When each bank has its own piping/cat/muffler/tip then I consider it true. I think the definition of true became stretched by the need to distinguish from all the dual-outlet catbacks people started to refer to as "dual exhaust" when it is clearly not.

so basically... youre saying the new camaro is going to have some kind of crossover. Thats fine. what everyone was worried about when you said that is the evil y-pipe.

[81DaytonaPaceCar]

I wish that was my car...lol...that's actually this car...

http://cgi.ebay.com/ebaymotors/Ponti...mZ380006709760

Just out of curiosity, why is the y-pipe evil?

[BP_Z28]

that trans am doesnt look 2 bad!

[JoeliusZ28]

Just out of curiosity, why is the y-pipe evil?

give me one reason you would want a single exhaust, other than for needs of space, routing, and expense

weight saving is the only thing i can think of...

It has no benefits, it usually doesnt perform as well (although marginal difference in most cases) and it doesnt sound as good either.

[WMCC Gary]

give me one reason you would want a single exhaust, other than for needs of space, routing, and expense

weight saving is the only thing i can think of...

It has no benefits, it usually doesnt perform as well (although marginal difference in most cases) and it doesnt sound as good either.

Not even going to get involved with this Debate.

This one is all yours JEFF!!!

[phoenix_rising]

One of my old coworkers had a yellow third gen Iroc called canary yellow that was actually that pale yellow looking color.

[JoeliusZ28]

Not even going to get involved with this Debate.

This one is all yours JEFF!!!

I dont consider this a debate, because if there are benefits to a single exhaust Im not aware of, im interested in knowing.

[JoeliusZ28]

i had several exhaust shops (three) tell me i was making a huge mistake putting 2 seperate mufflers on my truck (even with an h-pipe) and i was going to get terrible gas mileage with it... when the exact opposite ended up being true, my average increased by nearly 2 mpg

So ya, even though it seems i proved them wrong... id like to know their reasoning. They said things like "a single muffler evens exhaust pressures better" ... well isnt that what my crossover does? I figured they just wanted me to buy whatever they had instead of what i brought.

[cobalt camaro]

well most exhaust shop guys don't know their *** from a hole in the ground. If you want a real explanation i would talk to a fluid engineer, who could explain gas and fluid flow, and the pros and cons to different exhaust modifications.

[JoeliusZ28]

well most exhaust shop guys don't know their *** from a hole in the ground. If you want a real explanation i would talk to a fluid engineer, who could explain gas and fluid flow, and the pros and cons to different exhaust modifications.

i agree. I personally think exhaust systems are pretty simple from a conceptual standpoint. It wasnt like i hadnt done my homework, so some of the guys really annoyed with me when i said i didnt care and I wanted what i wanted.

[81DaytonaPaceCar]

They said things like "a single muffler evens exhaust pressures better" ... well isnt that what my crossover does? I figured they just wanted me to buy whatever they had instead of what i brought.

Yes, that is true, a crossover does help even exhaust pressures...but flowing everything into a single pipe will eliminate differing exhaust pressures...only drawback with a single exhaust is packaging a large enough pipe so it won't restrict flow.

Didn't SLP have a single pipe performance exhaust for 4th gens?

Maybe a better debate would be the differences between a X, Y, and H pipe...lol...they all do slightly different things.

If it was me, I'd get a X-pipe, just because it creates the lowest back pressure of the three.

If I had trunks of money lying around, I'd get one from Dr. Gas...some boom tubes too...

http://www.drgas.com/store/home.php

[JoeliusZ28]

Didn't SLP have a single pipe performance exhaust for 4th gens?

Maybe a better debate would be the differences between a X, Y, and H pipe...lol...they all do slightly different things.

If it was me, I'd get a X-pipe, just because it creates the lowest back pressure of the three.

If I had trunks of money lying around, I'd get one from Dr. Gas...some boom tubes too...

http://www.drgas.com/store/home.php

thats a good question. Im pretty sure flomaster made a 1OTL catback. IIRC craig has a 1OTL catback on his car. My 2OTL is pretty close...

Agree with you on the X-pipe, boom tubes are bad ass too!

[WMCC Doug]

Just to add another twist to the discussion ....... based on your definition, Jeff, the '74 exhaust was not "true duals" either. In fact, all 1st & 2nd gen cars all had the transverse muffler located behind the rear end. Two pipes in, two pipes out, one muffler. The only "true dual" system I can think of on a Camaro would be the rare chambered exhaust that was offered for a short time in 1969. It had 4 mufflers, and no place where they merged.

In 1975 (and after), when the first cat was added, there was only one cat, but the pipes split and ran through two mufflers. Still not "true duals" in the classic sense.

On 4th Gens, the first SLP, "two on the left" is a very unrestricted system. My '96 SS has this. Two cats, Y into a 3" pipe back to a single muffler that flows straight through. There is no "switch back" inside this muffler. The 3" pipe goes into the passenger side of the muffler, and then splits in a "Y" inside the muffler and exits through two pipes on the drivers side. With the muffler off, you can look right through from one side to the other.

I liked this system so much, I added it to our '85 IROC-Z as well.

[JoeliusZ28]

SLP 2OTL is indeed a nice muffler. I will admit though, that i liked how mine sounded more with stock manifolds than now with headers.