32 Gtr Boosting Prob

[OIR32]

hi guys.. i need some help.. ive just installed a greddy dual boost controller and gauge.. i took it for a drive today and tryed changing the boost levels and it didnt do shit! when i bought the car old mate said he removed the boost pill?? i dont know what psi 32 gtr's with stock turbs are supposed to run but the gauge read 15 psi and a spike of 17 psi.. seems to high to me but is that what the actuators are set at???? i wanna know what people think..... i could have installed the controller wrong? or something to do with the boost pill

Any input would be awesome!! thanks

[Slattery Gts-t]

Hey mate,

Im pretty sure stock boost on a R32 GTR is around 10psi but certainly not 15psi

I think he might be talking about the boost restrictor which is a little piece of pipe that is inside the vacuum line that runs from a T piece in the line to the wastegate, The line bleeds a bit of air back into the intake and has a restrictor inside of it, if you remove it it lets it bleed a bit more air and increases boost

If you have a full free flowing exhaust and a pod then removing it may just as well increase it to 15PSI and even cause a small spike but id put my money on the spike being caused by the boost controller not being set up properly

Anyone please correct me if i am wrong as iv only had experience with RB25'S

[OIR32]

Hey mate,

Im pretty sure stock boost on a R32 GTR is around 10psi but certainly not 15psi

I think he might be talking about the boost restrictor which is a little piece of pipe that is inside the vacuum line that runs from a T piece in the line to the wastegate, The line bleeds a bit of air back into the intake and has a restrictor inside of it, if you remove it it lets it bleed a bit more air and increases boost

If you have a full free flowing exhaust and a pod then removing it may just as well increase it to 15PSI and even cause a small spike but id put my money on the spike being caused by the boost controller not being set up properly

Anyone please correct me if i am wrong as iv only had experience with RB25'S

thanks mate,... it does have a nismo catback, pods and m's intakes. i could have set it up wrong, second hand with no instructions. especially the waste gate side twin turbs = a couple of t peices, making hoses the same length and tthis being my 1st rb26...one thing i was confused about was where to put the line that comes from the COM port of the boost solenoid... i t'd it into the black pipe work thats under the larger intake pipework which follows the intercooler piping around and goes to the 2 bovs... the other side of the t peice goes to a hard pipe that runs around the back of the motor...

[OIR32]

thanks mate,... it does have a nismo catback, pods and m's intakes. i could have set it up wrong, second hand with no instructions. especially the waste gate side twin turbs = a couple of t peices, making hoses the same length and tthis being my 1st rb26...one thing i was confused about was where to put the line that comes from the COM port of the boost solenoid... i t'd it into the black pipe work thats under the larger intake pipework which follows the intercooler piping around and goes to the 2 bovs... the other side of the t peice goes to a hard pipe that runs around the back of the motor...

i dont know if thats the right spot but i heard its just waste air coming out of that hose.

[Slattery Gts-t]

Iv never played with electronic boost controllers or twin turbo set ups so im sorry i cant help you with that,

Hopefully someone else can post up something to help you out!

[R.3.2.G.T.R]

what does it read with the boost controller off, should be running base actuator boost

[OIR32]

what does it read with the boost controller off, should be running base actuator boost

hi bwr.. no i havent tested it witth the controller off, i will tomorrow and let u know mate

[OIR32]

Iv never played with electronic boost controllers or twin turbo set ups so im sorry i cant help you with that,

Hopefully someone else can post up something to help you out!

thanks mate

[OIR32]

rido fella's.. i sorted the problem out. i didnt have a port running to a vac/boost source.. it runs on stock 10 psi and high boost of about 14, hopefully thats not to high a boost. theres only one more problem.. on the high boost setting with the foot down it has a boost spike that continually goes up and down from about 14 to 17 psi. if on low boost i change the boost % to the same psi as the high boost% in doesnt spike.. seems weird.. can anyone give me some info on that, thanks heaps

[Moodles2]

It's probably not boost %, but rather duty cycle %. Gain is most likely the difference between the 2 settings, a high gain setting will cause spiking.

[OIR32]

It's probably not boost %, but rather duty cycle %. Gain is most likely the difference between the 2 settings, a high gain setting will cause spiking.

agh ok thanks lance.. ill turn the gain down on high boost. any idea what it should be set at? thanks mate

[Moodles2]

Getting gain right is trial and error, too high and boost will spike (but build boost really fast) whereas a setting too low, the boost will be stable (but won't build as fast). It's a matter of finding the right setting that doesn't spike, but still builds boost fast.

[OIR32]

i think i nearly got itt set.. well close enough.. doesnt spile now.. thanks heaps moodles