Powerlab upgrades
#1
Powerlab upgrades
I have been out of the game for a couple of years and am planning on some conservative upgreats on my built powerlab G35 to increase the whp. I am looking at the following options: upgrading my fuel system to running e85 and retuning, Increase Meth flow, retuning and 3.5-4 inch catback exhaust and/or possible replacing the GT35r with an 6466 turbo and retuning. I am at ~525 whp and would like to achieve 575-600 whp. Also planning on adding an 1/2 plenum spacer to help. Any advise would be appreciated.
PS: build revup motor, 8.5 compression, JW S7 cams, stock intake, Haltech, Powerlab kit with gt35r turbo with 1.06 hotside, strup headers with hks dual exhaust, AEM meth kit spraying 1000cc/min
PS: build revup motor, 8.5 compression, JW S7 cams, stock intake, Haltech, Powerlab kit with gt35r turbo with 1.06 hotside, strup headers with hks dual exhaust, AEM meth kit spraying 1000cc/min
Last edited by james12345pt; 11-25-2014 at 04:44 PM. Reason: added info
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ATX350 (05-09-2017)
#6
By the look of things, I don't think a t4 flange will fit without some major mods or losing the ac. How about a 6766 with the 3 inch vband inlets? Is the back pressure stopping the turbo from making power pass 16 psi or is it the turbo itself. If it is the high backpressure, would running a dual three inch exhaust help?
Last edited by james12345pt; 11-27-2014 at 04:18 AM. Reason: add info.
#7
Vendor - Former Vendor
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By the look of things, I don't think a t4 flange will fit without some major mods or losing the ac. How about a 6766 with the 3 inch vband inlets? Is the back pressure stopping the turbo from making power pass 16 psi or is it the turbo itself. If it is the high backpressure, would running a dual three inch exhaust help?
The only way to solve it is to use a T4 turbine housing. You can keep everything else the same on the kit, as it will support 600+whp.
I think Momentum was able to make around 600whp (on a DJ) with a Tial 1.06 V-band turbine housing, so you may want to look at that option.
Using a 6766 with a .82 a/r V-band (only a/r available with the V- band from Precision) will not get you anywhere.
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#8
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Here’s my car at 14 psi on pump gas (91 octane) vs. 16 psi on E85:
Only difference is fuel (fuel system’s been upgraded accordingly as well…)
The car’s running the original GT35R with a 1.06 Garrett T3 exhaust housing and stock exhaust manifolds. I’d just throw more pump, injector, and E85 at your car before you touch the turbo.
Only difference is fuel (fuel system’s been upgraded accordingly as well…)
The car’s running the original GT35R with a 1.06 Garrett T3 exhaust housing and stock exhaust manifolds. I’d just throw more pump, injector, and E85 at your car before you touch the turbo.
#9
Here’s my car at 14 psi on pump gas (91 octane) vs. 16 psi on E85:
Only difference is fuel (fuel system’s been upgraded accordingly as well…)
The car’s running the original GT35R with a 1.06 Garrett T3 exhaust housing and stock exhaust manifolds. I’d just throw more pump, injector, and E85 at your car before you touch the turbo.
Only difference is fuel (fuel system’s been upgraded accordingly as well…)
The car’s running the original GT35R with a 1.06 Garrett T3 exhaust housing and stock exhaust manifolds. I’d just throw more pump, injector, and E85 at your car before you touch the turbo.
#11
New Member
iTrader: (11)
ya E85 will be able to run MBT which could be 10-20* more timing depending how much timing you run now.
I think that the T3 flange is bigger than the v-band. There are supras running the T3 Super99 turbo making into the 7-800s.
Realitically, i'd put on a 150$ exhaust back pressure sensor way before you start messing with a new turbo.
I think that the T3 flange is bigger than the v-band. There are supras running the T3 Super99 turbo making into the 7-800s.
Realitically, i'd put on a 150$ exhaust back pressure sensor way before you start messing with a new turbo.
#14
New Member
iTrader: (1)
Yeah, you'll need a full retune... a CJM stage 1 RFS should be enough, not sure about the pump, I picked up a Walbro 485 to be safe, it was $150. You won't need the meth if you're running E85... I'm not sure about the gains from pump and meth vs. E85, maybe str8dum1 might have had experience with both...
#16
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on E85 you could run that turbo at full tilt and never worry about knock. You can also tune the timing to MBT.
I'd never try either of those on a pump gas/ meth injection tune.
The red box haltech would be kinda a hassle as you'd need almost 3 tunes. Pump gas, E85 and some where in the middle.
I'd never try either of those on a pump gas/ meth injection tune.
The red box haltech would be kinda a hassle as you'd need almost 3 tunes. Pump gas, E85 and some where in the middle.
#18
Registered User
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I am in a similar situation.
weisco 8.8:1 pistons, E85, 35R turbo, not sure if .82 or 1.0 rear, T3, 1000cc Dw injectors, stage 3 CJM kit, 500HP and tuner says injectors are maxed out...60psi base pressure, 80psi full boost. HKS external wastegate at 14psi, 3" exhaust fujitsuo.
Do i get the Blackops / FID stainless Bosch IV14 1200cc or 1400cc injectors and push more fuel at it? Tuner also said before i changed wastegate vac lines that back pressure was an issue but i changed according to this.
http://www.turbosmart.com.au/wp-cont...Y_12_rev_2.pdf
from Two port connection Method (2) (For obtaining maximum boost pressure on your turbo system)
to Two port connection Method (1) (For controlling boost on a turbo system with high back pressure)
as was getting boost spike...
any suggestions on injector size and other tips? OP hope the pdf helps you out on the back pressure.. i only got a 460 to 500Hp using 98 pump from pump to e85 ..
weisco 8.8:1 pistons, E85, 35R turbo, not sure if .82 or 1.0 rear, T3, 1000cc Dw injectors, stage 3 CJM kit, 500HP and tuner says injectors are maxed out...60psi base pressure, 80psi full boost. HKS external wastegate at 14psi, 3" exhaust fujitsuo.
Do i get the Blackops / FID stainless Bosch IV14 1200cc or 1400cc injectors and push more fuel at it? Tuner also said before i changed wastegate vac lines that back pressure was an issue but i changed according to this.
http://www.turbosmart.com.au/wp-cont...Y_12_rev_2.pdf
from Two port connection Method (2) (For obtaining maximum boost pressure on your turbo system)
to Two port connection Method (1) (For controlling boost on a turbo system with high back pressure)
as was getting boost spike...
any suggestions on injector size and other tips? OP hope the pdf helps you out on the back pressure.. i only got a 460 to 500Hp using 98 pump from pump to e85 ..