My new HPS post MAF tubes installed

cujo · 02-14-2011, 12:51 AM

That is very true!
Thanks Chops

'10Anamoly · 02-14-2011, 08:58 AM

No offense intended but I'm seriously doubting that the HPS tubes give you 12 RWHP. I had the Cobb PMAF tubes (same thing) with K&N drop in filters and dyno'd 270whp before and 275whp after with 5 hp gain consistently from 4k up. Not sure why the HPS tubes would suddenly add 12 RWHP for just a bit smoother airflow. How were the outside temps/humidity/car temp/oil temp on the two seperate dyno days?

Jordo! · 02-14-2011, 09:07 AM

Quote:

Originally Posted by '10Anamoly

No offense intended but I'm seriously doubting that the HPS tubes give you 12 RWHP. I had the Cobb PMAF tubes (same thing) with K&N drop in filters and dyno'd 270whp before and 275whp after with 5 hp gain consistently from 4k up. Not sure why the HPS tubes would suddenly add 12 RWHP for just a bit smoother airflow. How were the outside temps/humidity/car temp/oil temp on the two seperate dyno days?

The first breather mod always seems to net the most power, relatively speaking, probably because it makes an initial contribution to achieving optimal VE, and as you progress, you get diminsishing returns.

I added them on as mod number four, and gains were in the 3-5 whp throughout the powerband ballpark, which is much more likely.

'10Anamoly · 02-14-2011, 10:41 AM

Agreed, but most of the gains are in the exhaust dept, the intake is pretty open as is with a direct cold air feed too. I've seen Stillen intakes make 6 hp up top and lose midrange so I do not see 12whp for just tubes at all.

5whp is believable though.

GZ3 · 02-14-2011, 01:27 PM

Quote:

Originally Posted by '10Anamoly

Agreed, but most of the gains are in the exhaust dept, the intake is pretty open as is with a direct cold air feed too. I've seen Stillen intakes make 6 hp up top and lose midrange so I do not see 12whp for just tubes at all.

5whp is believable though.

I just posted my results on the same dyno where i got my baseline. Outside temp was about 70 both times and oil temp was about 180...Did 3 pulls after my mods (hps + AFE filter) and all 3 pulls net 285rwhp. the 370Z seems to be very consistent. I just got my ART pipes installed awhile back and waitng for my dyno here hopefully this week. If you cant believe 285 from 273, then i wonder what you will feel like when i break 300 with these pipes...am just being optimistic

Jordo! · 02-14-2011, 02:33 PM

Quote:

Originally Posted by GZ3

I just posted my results on the same dyno where i got my baseline. Outside temp was about 70 both times and oil temp was about 180...Did 3 pulls after my mods (hps + AFE filter) and all 3 pulls net 285rwhp. the 370Z seems to be very consistent. I just got my ART pipes installed awhile back and waitng for my dyno here hopefully this week. If you cant believe 285 from 273, then i wonder what you will feel like when i break 300 with these pipes...am just being optimistic

panel filters, plus tubes, plus the ART pipes (which seem to make a little more power than standard TP's) and even a Y pipe should get you in the upper 290's -- close to 300 on a dynojet... so... yeah, probably.

I don't know if you'll break 300 without a tune using SAE correction, but you should definitely be in the ball park.

Oh, and 10-12 for high flow filters AND the tubes, is definitely believable.

GZ3 · 02-14-2011, 03:48 PM

Quote:

Originally Posted by Jordo!

panel filters, plus tubes, plus the ART pipes (which seem to make a little more power than standard TP's) and even a Y pipe should get you in the upper 290's -- close to 300 on a dynojet... so... yeah, probably.

I don't know if you'll break 300 without a tune using SAE correction, but you should definitely be in the ball park.

Oh, and 10-12 for high flow filters AND the tubes, is definitely believable.

Yeah i hope to be at 300 + - 5rwhp...kast had about 296 with what i had plus a ypipe...either way i will do a full report with dyno and TQ readings this time.

02-14-2011, 12:51 AM	#1 (permalink)
cujo Base Member Join Date: Nov 2010 Location: California Posts: 99 Drives: 2010 370z Roadster Rep Power: 15	That is very true! Thanks Chops __________________ Brilliant Silver/Roadster/Touring/6MT/Fast Intentions.

02-14-2011, 08:58 AM	#2 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 17	No offense intended but I'm seriously doubting that the HPS tubes give you 12 RWHP. I had the Cobb PMAF tubes (same thing) with K&N drop in filters and dyno'd 270whp before and 275whp after with 5 hp gain consistently from 4k up. Not sure why the HPS tubes would suddenly add 12 RWHP for just a bit smoother airflow. How were the outside temps/humidity/car temp/oil temp on the two seperate dyno days? __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

02-14-2011, 10:41 AM	#4 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 17	Agreed, but most of the gains are in the exhaust dept, the intake is pretty open as is with a direct cold air feed too. I've seen Stillen intakes make 6 hp up top and lose midrange so I do not see 12whp for just tubes at all. 5whp is believable though. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

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