Exhaust Comparison

[Johnny Danger]

Originally Posted by harryrcb

I can imagine how loud it is or would be with straight pipes. I never heard of anyone doing pipes like that. Very interesting. did you get any dyno numbers before and aft? If they are available I would like to see them. If you want more volume why don't you replace the mufflers with aftermarket glasspacks or whatever they pack them with now or maxflow race mufflers. You can get those in almost all different confiurations.

Believe me, I've been searching ad infinitum for a set of universal aftermarket mufflers that will fit. So far I haven't been able to find anything that matches up to the inlet and outlet diameters of my exhaust . Past dyno numbers have been positive . However, now that I've completed quite a few more mods I'm due for another visit .

[stephen wilson]

How long are the transitions? It sounds like you could have them cut off, and weld on new transitions to whatever size muffler you decide to use. Without a picture, it's hard to give good advice. (hint,hint)

[Johnny Danger]

Originally Posted by stephen wilson

How long are the transitions? It sounds like you could have them cut off, and weld on new transitions to whatever size muffler you decide to use. Without a picture, it's hard to give good advice. (hint,hint)

The transition pipes incorporate both the exhaust flanges, as well as the tips. The tips of my exhaust are not removable, but rather they are welded directly to the end of the exit pipes. With that said, it would make more sense to build an exhaust from scratch or purchase something already made. Like the Fabspeed race exhaust for example.

p.s. This is not my exact exhaust. Rather it's a file photo from 9ff. My exhaust actually has larger inlet and outlet diameters .

[stephen wilson]

Yeah, I agree, either a "custom" exhaust, or buy a kit. It may be that they went to a larger core on the muffler to reduce any restriction, since they are a primary backpressure source, along with Cat's.

[Johnny Danger]

Originally Posted by stephen wilson

Yeah, I agree, either a "custom" exhaust, or buy a kit. It may be that they went to a larger core on the muffler to reduce any restriction, since they are a primary backpressure source, along with Cat's.

I am seriously considering having a skilled exhaust fabricator remove the mufflers and weld in some straight pipes in place of them . If the sound is too aggressive I can always go back .

[stephen wilson]

It would be a piece of cake to fabricate a pipe to replace the pieces shown in your picture. They could replace from the flanges on, or just cut out the muffler and weld in a straight pipe to replace it, though that would make putting them back on more costly.

I still like the idea of a full size bypass pipe, with an electric "cut-out" like they use on Hot Rods. You could choose quite or loud, depending on your mood. Though they would add cost, complexity & some weight.

[Johnny Danger]

Originally Posted by stephen wilson

It would be a piece of cake to fabricate a pipe to replace the pieces shown in your picture. They could replace from the flanges on, or just cut out the muffler and weld in a straight pipe to replace it, though that would make putting them back on more costly.

I still like the idea of a full size bypass pipe, with an electric "cut-out" like they use on Hot Rods. You could choose quite or loud, depending on your mood. Though they would add cost, complexity & some weight.

Any thoughts on how it might sound with straight pipes ?