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Why do the single exit systems still use a transverse design?
I'm looking at the mufflex system and a few other that people made custom. They all follow that same path as the stock system with the transverse muffler and out the drivers side. Seems like 2 extra 90 degree bends. Why not just go straight back after the intermediate pipe and end on the passenger side with a straight through bullet style muffler?? Shitty diagram below:
Re: Why do the single exit systems still use a transverse design?
The Holley Blackheart and Speed Engineering dual kits have bullet mufflers like that. The transverse arrangement accommodates a quieter style of muffler with convenient packaging.
Re: Why do the single exit systems still use a transverse design?
Originally Posted by Komet
The Holley Blackheart and Speed Engineering dual kits have bullet mufflers like that. The transverse arrangement accommodates a quieter style of muffler with convenient packaging.
Gotcha, my plan was something like this just after the intermediate pipe clears the axle straight back, then maybe a down turn, or directly out the muffler. I can't imagine a reason why I would want to turn it transversely and have it exit out the drivers side.
Re: Why do the single exit systems still use a transverse design?
They do it that way because that's how the car is made. It FITS. Other schemes,,, ... maybe not so much. At least not if you want it remotely pleasant to drive.
Re: Why do the single exit systems still use a transverse design?
Originally Posted by sofakingdom
They do it that way because that's how the car is made. It FITS. Other schemes,,, ... maybe not so much. At least not if you want it remotely pleasant to drive.
Re: Why do the single exit systems still use a transverse design?
There's no free lunch, bullets tend to restrict flow the least but also dampen the least amount of sound. As a general rule, if you can see straight through it, it's going to be fairly loud. Depends on the rest of your setup too, if you're keeping the cat(s) it probably wouldn't be that bad.
Re: Why do the single exit systems still use a transverse design?
Check post 9 https://www.thirdgen.org/forums/exha...st-sumped.html. It is tighter on the passenger side to fit 4" in and go straight back but easily doable but for bullets only. I still did the single 4" transverse just because there is more room. Mine's turbo'd but still loudish, not sure what NA would sound like, probably annoying.
And then there's the whole argument about if you really need it under 400 or 500hp.
Re: Why do the single exit systems still use a transverse design?
you mean sound level wise?
Yes.
Once you mature past the stage of the little boy using clothespins to hold playing cards in his tricycle spokes, the appeal of annoying the whole world around you while causing loss of your own hearing dims greatly.
Re: Why do the single exit systems still use a transverse design?
When they built these cars, there are all sorts of federal regulations they had to pass. Noise level, etc. There was likely an engineering reason for building the cars that way to achieve what ever result met what ever decibel standard.
On another note, this is barking up the wrong tree because the design of the axle back with the correct diameter pipe and good mandrel bends will support a lot of power. Until you get to 425-450+ rwhp, you wont see most 3" cat backs become a restriction, granted that's if the rest of the exhaust system, headers, Y pipe, merge collector in said Y are all right diameter. At that point duals or a 4" cat back if you want to get every last bit out of it, but to me the noise trade off isn't worth it. I am at that point with my 4th gen if I really wanted to break the 500rwhp NA mark, that's on of the things I could do, but its at the expense the car will get so loud, I would never want to drive it. Most 4" system use a single bend in with no passenger pipe, just a driver exit and those systems are capable of supporting 1000+ rwhp in forced induction cars.
Re: Why do the single exit systems still use a transverse design?
The safe space over the axle is only on the passenger side, so if you want dual tails, one on each side, then you'll have to go across behind the axle in a stockish way.
There's space to go over the axle on the driver side, but it's between active suspension components, the panhard bar and the panhard bar brace. People have run true duals straight back over the axle on each side, and it looks good, but the driver side pipe would be at risk of getting crunched.
