V6 X-pipe VS H-pipe flow test

husam2012 · 10-19-2020, 08:22 PM

Both are very close to each other. For these cars, it seems like Y-pipe style exhausts make the best top end.

I compared a dual 2.5" exhaust w/ an X pipe to a motordyne style exhaust with a 3 inch mid section back to dual 3inch and it picked up about 6-10 whp.

In theory, the dual 2.5 inch flows more but the Y style made more power.

Spooler · 10-24-2020, 01:28 PM

Here....

10-19-2020, 08:22 PM	#1 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 553 Drives: 370Z Nismo Rep Power: 9471	Both are very close to each other. For these cars, it seems like Y-pipe style exhausts make the best top end. I compared a dual 2.5" exhaust w/ an X pipe to a motordyne style exhaust with a 3 inch mid section back to dual 3inch and it picked up about 6-10 whp. In theory, the dual 2.5 inch flows more but the Y style made more power. __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

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10-24-2020, 01:28 PM	#2 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,153 Drives: 2013 Nismo 370z Rep Power: 2684394	Here....