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R32 Gtr: Pfc Boost Control Problem

PSI_GTSII

By PSI_GTSII,
in Engines & Forced Induction

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PSI_GTSII Experienced

PSI_GTSII

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Posted (edited)

Short Story

How can I find out what the Boost is set at from a recent tune on my PFC Handcontoller?

And how can I change it?

I have been into - Settings - Boost - and there is 4 different figures in there such as

1 .70

2. .85

3 1.00

4 1.20

I can adjust these figures up or Down, but doing so dos'nt change the Peak Boost setting shown in the Display mode when I drive it, or does it affect the performance of the car.

Long Story

The reason I ask

I had a PowerFC and PowerFC Boost control kit fitted to my car and had it tuned on Wednesday then drove straight to the drags from the Tuners.

It Made 355rwHP @ 18psi from 315rwHP @ 14 psi previous on the same dyno, and it definately felt noticeablely faster on the 2 squirts I gave it on the way down to the Motorplex....i felt fairly confident it would do an 11.9, if not the MPH would definately improve.

Previously (with 315 @ 14psi) I had ran 3 x 12.6's @ 180kmh with easy 2.0 60fts

On Wednesday night (with a supposed 355 @ 18psi) I ran identical times all at 180kmh, and again with 2.0 60fts...comparing time sheets to previous runs with 315rwHP every increment was identical to my suppossed now 355rwHP (330ft, 660ft etc)

I was not happy as this suggests I am making no more HP......

There is no boost guage in my car but after a quick squirt on the way to work the next day I noticed the Peak boost on the PFC handcontroler was only .95 bar (14psi), this would explain why my times were identical but why has it happened?

I did notice a strange electrical type pause whilst driving to the drags after the 2nd squirt I gave it, could the PFC have shorted out / reset itself?

Or has it just a simple boost leak?

I figure to find out if its a PFC problem I need to find where the programed Boost setting is and see if it has changed from 18psi, but cannot seem to find it.

If its a blown IC pipe / Boost leak I need to find out how to increase the Boost via the Handcontroller, again something I am not sure how to do..?

It goes in on Monday to have it checked out / Fixed but I would'nt mind having a Play over the weekend :)

Cheers

Lindsay

Edited by PSI_GTSII
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https://www.sau.com.au/forums/topic/157743-r32-gtr-pfc-boost-control-problem/
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