Exhaust H Pipe vs. X Pipe: Difference?

earwicker7 · 03-11-2010, 12:12 PM

Quote:

Originally Posted by MikeySed

what about a y pipe?

and someone said they connected a y pipe to their stock exhaust with hfcs... could you do this with an X or H pipe too?

If so out of all 3 which would be the best?

I am trying to retain stock catback for a quieter sound. So I want to go hfc + ypipe like someone did.. I will get most of the power out of the car, maybe only leaving about 5-9whp and I am ok with that to have the car quieter and saving money too

I don't know if you want to go with hfc if you're going for quiet...

1slow370 · 03-11-2010, 12:43 PM

for replacing the center section look into the HKS center pipes they are what you are looking for kinda. an x pipe can make low end as well as i said it is all about tuning the overlap of the two pipes.

TeamARK · 03-11-2010, 05:29 PM

To put it simply x flow provides a smoother flow. We were the first to bring the Xflow design into the 370z and we made a designated chamber for this. Other companies seem to have jumped on this by merging two pipes together forming a X.

G Fo12ce · 03-12-2010, 02:03 PM

Thanks all for the info so far.

ARK, I don't doubt that it's good but just curious during the testing did you have a prototype that had both an X and and H? If they were both tested what would have been the benefits as far as tq/hp gains in different areas of the curve? Or did you just go with the X right off the bat.

Also you are right some of the other systems (Berk, FI, ARK, Stillen) use and X. Seems like traditional Japanese tuners (HKS, Greddy ECT) use the H design.

TeamARK · 03-15-2010, 12:56 PM

From a 350z post. Honestly, I don't think some H-pipes contribute much to the flow.

G Fo12ce · 03-26-2010, 03:03 PM

LOL that looks really cheese-ball. I don't think/hope most H-Pipes looks like that. I'd be willing to bet the HKS is the full I.D. of the pipe or close.

03-11-2010, 12:43 PM	#2 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	for replacing the center section look into the HKS center pipes they are what you are looking for kinda. an x pipe can make low end as well as i said it is all about tuning the overlap of the two pipes. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

03-11-2010, 05:29 PM	#3 (permalink)
TeamARK Track Member Join Date: Jul 2009 Location: CHINO Posts: 957 Drives: Black 350z/370z Rep Power: 18	To put it simply x flow provides a smoother flow. We were the first to bring the Xflow design into the 370z and we made a designated chamber for this. Other companies seem to have jumped on this by merging two pipes together forming a X. v1_nismo likes this. Last edited by TeamARK; 03-11-2010 at 05:34 PM.

03-12-2010, 02:03 PM	#4 (permalink)
G Fo12ce Premium Member Join Date: Nov 2009 Location: Socal Posts: 996 Drives: Sold! Rep Power: 52	Thanks all for the info so far. ARK, I don't doubt that it's good but just curious during the testing did you have a prototype that had both an X and and H? If they were both tested what would have been the benefits as far as tq/hp gains in different areas of the curve? Or did you just go with the X right off the bat. Also you are right some of the other systems (Berk, FI, ARK, Stillen) use and X. Seems like traditional Japanese tuners (HKS, Greddy ECT) use the H design. __________________ Nismo Suspension: New Owners Check Here! Last edited by G Fo12ce; 03-12-2010 at 02:21 PM.

03-15-2010, 12:56 PM	#5 (permalink)
TeamARK Track Member Join Date: Jul 2009 Location: CHINO Posts: 957 Drives: Black 350z/370z Rep Power: 18	From a 350z post. Honestly, I don't think some H-pipes contribute much to the flow. stricha likes this.

03-26-2010, 03:03 PM	#6 (permalink)
G Fo12ce Premium Member Join Date: Nov 2009 Location: Socal Posts: 996 Drives: Sold! Rep Power: 52	LOL that looks really cheese-ball. I don't think/hope most H-Pipes looks like that. I'd be willing to bet the HKS is the full I.D. of the pipe or close. __________________ Nismo Suspension: New Owners Check Here!

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