Short tails torque loss fix??

wanker

Why would a short tail exhaust affect the engine torque? If any thing, most axle back exhaust manufacturers make dubious claims of Hp gains?

TerribleONE

Due to the loss of back pressure usually some low end torque is lost. As far as correcting it without a tune, not going to happen. If performance is your main concern, there are plenty of other exhausts out there that have proven performance.

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FPenvy

TQ loss is a real thing when freeing up back pressure. running straight pipes and i feel the difference even in the butt dyno. however i feel there are gains up top.

i can just feel and hear a difference. also so far the 1/4 miles times are almost identical with both set-ups.

i do need to re-tune soon and i'm sure the TQ loss would be gone. just been lazy and it's not bad enough to pay for a re-tune to smooth out 1-3WTQ loss.

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324whp/258wtq AAM Tuned |F.I. NonRes CF CBE/NonRes TestPipes #373|UpRev Tuner|Akuma Motorsports Intakes|Z1 34 Row Oil Cooler

wanker

Okay, I can understand how a full CBE may result in lower back pressure in the exhaust system, but not an axle back. If anything it would seem trivial as most axle back exhaust Hp gains are dubious. Certainly nothing to justify a tune.

Educate me..

FPenvy

axle back maybe. CBE systems will most certianly gain power and claims arent too off.

but with my set-up oringinally i only had mufflers acting as back pressure. now without mufflers i can feel it. you'd be surprised how much pressure the mufflers on the exhaust hold back.

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324whp/258wtq AAM Tuned |F.I. NonRes CF CBE/NonRes TestPipes #373|UpRev Tuner|Akuma Motorsports Intakes|Z1 34 Row Oil Cooler