dmhenderson's Nismo '12 GTM supercharged build thread where I freak out a lot

dmhenderson · 08-22-2013, 12:39 PM

Learned something new today. Thanks!

Sent from my iPhone using Tapatalk - now Free

dmhenderson · 09-06-2013, 09:48 AM

Update on tune: With the cats off it and the ART pipes on, before even starting to tune the car we are at 470whp. Lesson we've learned here: Superchargers do not like cats.

Whoever bet I was going to lose power with those pipes owes me a beer.

Baer383 · 09-06-2013, 09:51 AM

I have 516 rwhp with stock cats on.

carlitos_370z · 09-06-2013, 09:57 AM

great to hear that my friend!!!

dmhenderson · 09-06-2013, 10:00 AM

Cats on: 450whp (no tune)
Cats off: 470whp (no tune)

I'm not trying to beat your dyno number, I am only interested in gains. This might be useful info for someone else on down the line.

Baer383 · 09-06-2013, 10:02 AM

The cats keep back pressure and with the VVEL in these cars the back pressure will help with cylinder fill,I put Berk HFC on and lost 35 rwhp.

theDreamer · 09-06-2013, 10:29 AM

Quote:

Originally Posted by Baer383

The cats keep back pressure and with the VVEL in these cars the back pressure will help with cylinder fill,I put Berk HFC on and lost 35 rwhp.

I wonder if it is since he is just running the GTM canned tune, and it is fairly tamed overall, that just opening it gives some extra HP.

jpritche · 09-06-2013, 11:41 AM

Quote:

Originally Posted by theDreamer

I wonder if it is since he is just running the GTM canned tune, and it is fairly tamed overall, that just opening it gives some extra HP.

My thought process exactly.

dmhenderson · 09-06-2013, 10:10 AM

Definitely strange. You'd think pipes would cause more of a loss but they didn't. Same dyno, same tuner so it's definitely a legit gain.

Chuck33079 · 09-06-2013, 10:12 AM

So how much fun have you been having with it since you've gotten it back? It's amazing how well these motors take to boost. And the chassis handles the power like it was meant to have it.

dmhenderson · 09-06-2013, 09:36 PM

I'll have final numbers once they get in there with the Uprev software tomorrow morning. Dropped off the GT-R spark plugs earlier this evening.

snowsurfdirtx · 09-08-2013, 10:53 PM

hey dmhenderson.. one of the guys in the club i'm in pointed me towards your build. I've got a 2011 touring/sport and will be installing the 1.5 kit myself. your thread has been very helpful, lol I'm trying to read everything i can before the kit gets here

how's the car running? any updated numbers?

dmhenderson · 09-15-2013, 12:02 PM

So I think I've figured out the deal with the rotor caps. I have H&R DRS spacers and I think the replacement studs might be slightly different than the stock studs (different thread) which is causing the problem. I may be able to get a shop to modify the caps to fit but I'm not sure if it's worthwhile. They'd look pretty damn hot though.

Baer383 · 09-15-2013, 12:11 PM

How is your car running?

dmhenderson · 09-15-2013, 12:20 PM

No more low end sputter. Very clean through the gears although the clutch is definitely starting to show stress. Still getting used to the stink cloud that follows the car everywhere but honestly, I kinda like it.

08-22-2013, 12:39 PM	#1 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	Learned something new today. Thanks! Sent from my iPhone using Tapatalk - now Free __________________

09-06-2013, 09:48 AM	#2 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	Update on tune: With the cats off it and the ART pipes on, before even starting to tune the car we are at 470whp. Lesson we've learned here: Superchargers do not like cats. Whoever bet I was going to lose power with those pipes owes me a beer. carlitos_370z likes this. __________________ Last edited by dmhenderson; 09-06-2013 at 09:51 AM.

09-06-2013, 09:51 AM	#3 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	I have 516 rwhp with stock cats on. __________________ 2013 ZL1 754 rwhp 747 rwtq

09-06-2013, 10:00 AM	#5 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	Cats on: 450whp (no tune) Cats off: 470whp (no tune) I'm not trying to beat your dyno number, I am only interested in gains. This might be useful info for someone else on down the line. carlitos_370z likes this. __________________

09-06-2013, 10:02 AM	#6 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	The cats keep back pressure and with the VVEL in these cars the back pressure will help with cylinder fill,I put Berk HFC on and lost 35 rwhp. __________________ 2013 ZL1 754 rwhp 747 rwtq

09-06-2013, 09:57 AM	#4 (permalink)
carlitos_370z A True Z Fanatic Join Date: Jul 2013 Location: Puerto Rico Posts: 7,157 Drives: 13 Nissan 370Z SP M6 Rep Power: 7587	great to hear that my friend!!!

09-06-2013, 10:10 AM	#9 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	Definitely strange. You'd think pipes would cause more of a loss but they didn't. Same dyno, same tuner so it's definitely a legit gain. __________________

09-06-2013, 10:12 AM	#10 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	So how much fun have you been having with it since you've gotten it back? It's amazing how well these motors take to boost. And the chassis handles the power like it was meant to have it. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

09-06-2013, 09:36 PM	#11 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	I'll have final numbers once they get in there with the Uprev software tomorrow morning. Dropped off the GT-R spark plugs earlier this evening. carlitos_370z likes this. __________________

09-08-2013, 10:53 PM	#12 (permalink)
snowsurfdirtx Enthusiast Member Join Date: Sep 2012 Location: WA Posts: 285 Drives: Too Fast Rep Power: 13	hey dmhenderson.. one of the guys in the club i'm in pointed me towards your build. I've got a 2011 touring/sport and will be installing the 1.5 kit myself. your thread has been very helpful, lol I'm trying to read everything i can before the kit gets here how's the car running? any updated numbers?

09-15-2013, 12:02 PM	#13 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	So I think I've figured out the deal with the rotor caps. I have H&R DRS spacers and I think the replacement studs might be slightly different than the stock studs (different thread) which is causing the problem. I may be able to get a shop to modify the caps to fit but I'm not sure if it's worthwhile. They'd look pretty damn hot though. __________________

09-15-2013, 12:11 PM	#14 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	How is your car running? __________________ 2013 ZL1 754 rwhp 747 rwtq

09-15-2013, 12:20 PM	#15 (permalink)
dmhenderson A True Z Fanatic Join Date: Feb 2011 Location: Maryland Posts: 5,930 Drives: AWD TT 370z Rep Power: 27	No more low end sputter. Very clean through the gears although the clutch is definitely starting to show stress. Still getting used to the stink cloud that follows the car everywhere but honestly, I kinda like it. Moore Auto likes this. __________________

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ENT-Z Build Thread	ENT-Z	Member's 370Z Gallery	68	09-06-2014 10:00 PM
Snakes' build thread	Snakes709	Other Vehicles	124	04-07-2013 10:39 PM
California build thread	bigaudiofanat	Audio & Video	95	01-27-2012 11:00 PM
Password:JDM 2011 370Z Nismo #170 Build Thread	PasswordJDM	Member's 370Z Gallery	31	11-24-2011 05:32 PM
THE "Lets argue about Bullitt's build with out ruining Bullitt's build thread" THREAD	Reaper42	Forced Induction	14	01-22-2011 05:24 PM