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Old 12-01-2014, 03:29 PM   #4 (permalink)
FPenvy
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Join Date: Jul 2011
Location: Pittsburgh PA
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Drives: 15 GT-R BE/09 370Z
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Quote:
Originally Posted by TerribleONE View Post
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.
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
Quote:
Originally Posted by F.I. Inc. View Post
Yes, they are Tony approved! Frank, when I get around to it, I may put your pipes into production. We will call them, "The FP" option.
-Tony
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