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GTX3071 results (.63 rear) - Hardtuned.net

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GTX3071 results (.63 rear) 

19 replies to this topic

#1 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 30 March 2014 - 08:38 AM

Not long ago, there was a lot of discussion about this turbo so I thought I'd post my results and experience so far.
I've got a forced motorworx motor with Tomei 260/260 procams, plazmaman plenum, id1000cc injectors, powertune high mount manifold, 38mm tial gate, haltech platinum pro, etc.
On pump 98 car makes 280rwkw on 20psi, full boost at 4500rpm. Some might suggest that's laggy and it should be in by 4000rpm or less, but it's spent a fair amount of time on the dyno and that's the best we could get. Might be able to do a little better if adjustable cam gears were added, but for me it's not a problem. I also think the plenum has shifted the power band up by about 3-400rpm.
My car is a street car, but is designed to surprise exotics if I get the chance, so I've got the exflex sensor and went to tune it on e85 yesterday. Had issues with the brand new walbro 460lph running out of fuel at 20psi. It made 300rwkw easily. So once I sort the fuel issue, I'll report back.
But driving on the street is great with this setup. It's torquier down low from idle than my girlfriends Mazda 3, cruises nicely, uses less fuel cruising and from 4000rpm onwards lights the rears. Transient response is great, and I don't care what anyones says, this is where you notice ball bearings over bush bearings. And it's actually more linear than expected, on 98 at least. It ramps on like an animal on e85...
So I hope this helps anyone considering this turbo, especially those who expect sub 4000rpm full boost. But bear in mind, this thing will likely go on to make 350rwkw.


#2 Stuss15

  • Joined:23-November 12
  • Location:Australia QLD
  • Car:2000

Posted 30 March 2014 - 11:34 AM

Thanks so much for posting mate, will be looking at getting one shortly and posting my results too. Sounds very realistic and in the ballpark I was hoping for.

#3 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 30 March 2014 - 12:40 PM

looking forward to seeing what it does with more fuel support and boost

i personally would of stuck with the standard plenum chamber and just upgraded the throttle body on its own

#4 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 30 March 2014 - 05:09 PM

The benifit of the plazmaman plenum is that coupled with the plazmaman fuel rail, it's easy to fit top feed injectors. Plus, I expect it to produce much more midrange torque and peak hp. I've got the smallest 66mm throttle body, and internal ram tubes. The car keeps making power at 8000rpm, but limiter has been set at 7500.

#5 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 30 March 2014 - 05:51 PM

You can still run a top feed rail with the standard plenum
banana boy went back to a standard plenum
Ditched the Pnt item for a standard plenum with spacer plate so he could keep his top feed rail
Gained power all over the range

#6 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 30 March 2014 - 06:01 PM

Yeah I know, I'll see what it makes with 30psi and make the decision after that. I expect it will make a big difference at higher boost pressure

#7 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 30 March 2014 - 06:04 PM

At least u still got the lower half of the runners compared to to the Pnt item which replaces the whole lot and had even shorter runners

#8 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 30 March 2014 - 08:22 PM

Has anyone had issues with standard fuel line size flowing enough on e85 around the 500rwhp range?

Also, does the standard in tank fuel pump hose need to be changed to something specifically e85 compatible?

#9 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 30 March 2014 - 11:40 PM

 Tom Tucker, on 30 March 2014 - 08:22 PM, said:

Has anyone had issues with standard fuel line size flowing enough on e85 around the 500rwhp range?
i ran standard fuel hoes in my 180sx and made well over 500rwhp
every thing is talking shit about the standard lines being to small and won't flow enough, yeah right eat a dick
i ran standard fuel hose under the car i had a single entry fuel rail with -6 fittings on each end of it and made 800+hp

#10 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 30 March 2014 - 11:44 PM

 Tom Tucker, on 30 March 2014 - 08:22 PM, said:

Also, does the standard in tank fuel pump hose need to be changed to something specifically e85 compatible?
ill just leave this here

http://powertune.com...-fuel-pump.html
http://powertune.com...s13-simple.html
http://powertune.com...it-s14-s15.html

#11 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 30 March 2014 - 11:45 PM

haven't got any photos or dyno sheets of the banana boys car but here is a video and it has a bit of the dyno sheet in it after converting back to the standard plenum chamber


#12 sw1fty

  • Joined:12-January 07
  • Car:none

Posted 01 April 2014 - 06:01 AM

For fuel flow issues. Have you checked the voltage at the pump? May benefit from hardwiring.
Also could be a blocked fuel filter.

Nice results though!

#13 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 01 April 2014 - 06:10 AM

Cheers. Yeah I'm wiring for 13.5v and will see if that helps. That single pump should be more than enough, so if it doesn't do much then I'll know it's the standard lines

#14 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 01 April 2014 - 02:35 PM

 Tom Tucker, on 01 April 2014 - 06:10 AM, said:

Cheers. Yeah I'm wiring for 13.5v and will see if that helps. That single pump should be more than enough, so if it doesn't do much then I'll know it's the standard lines
Trust me it's not the standard lines
Like I said I ran standard lines
Single entry fuel rail with -6 fittings
Made over 800hp
I ran twin walbro pumps T-pieced into the single standard fuel line

#15 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 01 April 2014 - 03:38 PM

Cool, thanks man. I'll know it's a dodgey pump then I guess

#16 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 19 April 2014 - 01:20 PM

Solved the fuel issue by rewiring the pump to 13.5V. So back on the dyno today.

Car made 340rwkw @ 28psi. Walbro 460lph and ID1000cc injectors maxed.

#17 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 19 April 2014 - 01:28 PM

Apologies for the poor quality photo...

Attached Thumbnails

  • Attached Image: 20140419_121936.jpg


#18 The New Guy

  • Joined:09-May 04
  • Location:Australia VIC

Posted 19 April 2014 - 03:07 PM

 Tom Tucker, on 19 April 2014 - 01:20 PM, said:

Solved the fuel issue by rewiring the pump to 13.5V. So back on the dyno today.

Car made 340rwkw @ 28psi. Walbro 460lph and ID1000cc injectors maxed.

Great results mate. Can I ask hiw did u re wire the pump?

#19 Tom Tucker

  • Joined:21-September 06
  • Location:Australia NT
  • Car:S15

Posted 19 April 2014 - 03:27 PM

Cheers mate. Fuel pump was wired direct to the battery via a relay and 20A fuse

#20 CarAlburo

  • Joined:30-January 18
  • Car:CarAlburokJ

Posted 07 February 2018 - 05:03 PM

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