xicema17x

iTrader: (22)

I was wondering why there are bends on exhaust pipings, cant they just make it straight for more performance or do the bends also help performance? Dumb question, but it was kinda bugging me.

stg2lgcy00

iTrader: (23)

Most cars have the bends since the muffler is designed to mount on the left or right side of the car. Not just that but there's everything under the car that the exhaust has to avoid like the tranny, driveshaft, rear diff, rear suspension arms, swaybar ect.. I mean technically I guess you could put a literally straight turboback on the car but it would be wayy too low and have to be mounted right under your license plate... great place for cops to see your expired registration and illegal exhaust at the same time hahah.

nic3krnnamja83

iTrader: (8)

this question would be better suited in the dump

but mandrel bends cause u would not be able to straight pipe considering there are components in the way

Zoeb2s

iTrader: (38)

Are you making fun of the dumpster?

nic3krnnamja83

iTrader: (8)

lol zoeb no :hail: dumpster mod

earlyapex

iTrader: (3)

I'm biting my lip.

doh.

xicema17x

iTrader: (22)

Would getting like a turboxs downpipe and making a straight pipe from the end of the downpipe to the axle work? If that works, i might do that instead.

cleofis

iTrader: (11)

like..no muffler you mean?

the reason for bends is, a: to menouver(sp?) around components of the car like the rear axle, control arms, sway bar, etc. and b: better flow. with mandrel bends instead of dented bends or straight pipe welds at angles, the air flows smoother like a current instead of jabbing at the angles thus reducing air flow.

i love run-on sentences.

xicema17x

iTrader: (22)

No there is a muffler, but the straight pipe goes from the end of the downpipe to the muffler. Would I get better performance from doing that, or should i just go with a dowpipe like helix, where the 3rd cat is combined with the downpipe?

Wingless Wonder

iTrader: (7)

The factory exhaust system is a compromise for fit, noise control, ground clearance, and cost. From the downpipe back it may be possible to use darned near straight pipe with minimal bends but you will probably lose ground clearance or find interference with the rear suspension. Do not terminate the exhaust system underneath the car for street use - run it all the way to the rear bumper like the factory does. The fumes will rise into the passenger compartment, or through the windows or the ventilation system.

Exhaust gasses should flow in a straight line for the least amount of backpressure. The traditional rule of thumb is that introducing a 90° bend in a length of tubing adds the same amount of restriction as 10 additional feet of the same diameter tubing. Two 45° bends separated by straight pipe create less restriction than a single 90° bend of the same radius.

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0==WW==0
"…axles of evil…" - george w. bush

cleofis

iTrader: (11)

you will have hp gains, but your car will be loud as hell. i would run a high flow cat + resonator + a good muffler in compliance to a "straight pipe"

WRX Rush

iTrader: (7)

If you have the MPJ flange or something like it you can attach a 3 inch dump pipe towards the ground to that, it is fun to run around for a few days with no exhaust pipes on at all.

Rush

thebankman

iTrader: (7)

a perfectly-designed car would be made to accomodate a straight exhaust pipe, but most get by with a couple bends here and there.