My new HPS post MAF tubes installed

'10Anamoly · 02-12-2011, 07:17 AM

Anyone dyno'd a before/after with the HPS tubes yet?

6spd · 02-12-2011, 07:43 PM

someone did on here somewhere and got 12hp in some spots, but i dont know where the graph is though.

'10Anamoly · 02-13-2011, 09:08 AM

The dyno does not have a before / after shot if I remember right. It just had three runs with the tubes, two of which had 275, 275 and then one with like 286 or something. However, the post says he cannot find his baseline so I dont know if those others are the baselines..?

It's a weird dyno graph too, instead of HP/TQ x RPM its HP x MPH.

Just looking for a comparo dyno for before/after with just tubes.

6spd · 02-13-2011, 10:31 AM

Quote:

Originally Posted by '10Anamoly

The dyno does not have a before / after shot if I remember right. It just had three runs with the tubes, two of which had 275, 275 and then one with like 286 or something. However, the post says he cannot find his baseline so I dont know if those others are the baselines..?

It's a weird dyno graph too, instead of HP/TQ x RPM its HP x MPH.

Just looking for a comparo dyno for before/after with just tubes.

yeah i havent seen one like that yet... shame too, someone should do it.

Jordo! · 02-13-2011, 10:49 AM

I have one in my dyno thread...

EDIT: Actually, correction -- I forgot that the dyno of the HPS tubes is after a bunch of other mods were on. Not the same comparison you guys are looking for.

JJ-NISMO · 02-13-2011, 11:52 AM

Thanks for the reply! I am trying to get the most out of the car without doing any warranty voiding mods (i.e. tune) and this really helps!

I think I will go with the MXP exhaust. It gives a gain on the stock system, has a great sound, but with a 60mm diameter, stays pretty close to the stock set-up and hopefully wont lose too much in the low end.

My first name is J... and for some reason a few friends gave me the nickname JJ lol...

GZ3 · 02-13-2011, 06:46 PM

Quote:

Originally Posted by '10Anamoly

The dyno does not have a before / after shot if I remember right. It just had three runs with the tubes, two of which had 275, 275 and then one with like 286 or something. However, the post says he cannot find his baseline so I dont know if those others are the baselines..?

It's a weird dyno graph too, instead of HP/TQ x RPM its HP x MPH.

Just looking for a comparo dyno for before/after with just tubes.

that was me, they had a problem with the TQ reading so i was only able to get a HP reading. The only # on that graph that matter is the 285. that was my dyno number. The other was another 370Z that was dyno'd there that somehow got overlayed on mine. My Baseline, which I lost on my ohter flashdrive was 273.

cujo · 02-14-2011, 12:31 AM

I too would like to order these tubes and the drop in filters but can someone please tell me if this will cause any issues with my future smog inspection
I'm currently running on FI with stock cat
Thanks

chops · 02-14-2011, 12:36 AM

Quote:

Originally Posted by cujo

I too would like to order these tubes and the drop in filters but can someone please tell me if this will cause any issues with my future smog inspection
I'm currently running on FI with stock cat
Thanks

you shouldnt have to worry...smog is 6 yrs away and its an easy enough install that you can reinstall the stock tubes when the time comes

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.

02-12-2011, 07:17 AM	#61 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 15	Anyone dyno'd a before/after with the HPS tubes yet? __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

02-12-2011, 07:43 PM	#62 (permalink)
6spd A True Z Fanatic Join Date: Aug 2009 Location: South Florida Posts: 3,001 Drives: Q50RS Rep Power: 24	someone did on here somewhere and got 12hp in some spots, but i dont know where the graph is though. __________________ -Jay- jonathanjamesphotographer.com

02-13-2011, 09:08 AM	#63 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 15	The dyno does not have a before / after shot if I remember right. It just had three runs with the tubes, two of which had 275, 275 and then one with like 286 or something. However, the post says he cannot find his baseline so I dont know if those others are the baselines..? It's a weird dyno graph too, instead of HP/TQ x RPM its HP x MPH. Just looking for a comparo dyno for before/after with just tubes. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

02-13-2011, 10:49 AM	#65 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	I have one in my dyno thread... EDIT: Actually, correction -- I forgot that the dyno of the HPS tubes is after a bunch of other mods were on. Not the same comparison you guys are looking for. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 02-13-2011 at 10:52 AM.

02-14-2011, 12:31 AM	#68 (permalink)
cujo Base Member Join Date: Nov 2010 Location: California Posts: 99 Drives: 2010 370z Roadster Rep Power: 14	I too would like to order these tubes and the drop in filters but can someone please tell me if this will cause any issues with my future smog inspection I'm currently running on FI with stock cat Thanks __________________ Brilliant Silver/Roadster/Touring/6MT/Fast Intentions.

02-13-2011, 11:52 AM	#66 (permalink)
JJ-NISMO Enthusiast Member Join Date: Feb 2010 Location: SoCal Posts: 276 Drives: 09 NISMO 370Z PG Rep Power: 242	Thanks for the reply! I am trying to get the most out of the car without doing any warranty voiding mods (i.e. tune) and this really helps! I think I will go with the MXP exhaust. It gives a gain on the stock system, has a great sound, but with a 60mm diameter, stays pretty close to the stock set-up and hopefully wont lose too much in the low end. My first name is J... and for some reason a few friends gave me the nickname JJ lol...

02-14-2011, 12:51 AM	#70 (permalink)
cujo Base Member Join Date: Nov 2010 Location: California Posts: 99 Drives: 2010 370z Roadster Rep Power: 14	That is very true! Thanks Chops __________________ Brilliant Silver/Roadster/Touring/6MT/Fast Intentions.

02-14-2011, 08:58 AM	#71 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 15	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	#73 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 15	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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