Think this has been posted before.

I'm wanting to now what set points members are runnng with the Profec B Boost Controller.

I am wanting to run low at 12psi and high at 14.5psi.

 

Don't think mines set up right. Sometimes I'm getting, what sounds like the clutch slipping when I cane it. This doesn't happen all the time. Some people and telling me it is definately the clutch and some are saying it's the boost.

I know that when you incease the boost, the stock clutch can struggle.

Your comments much appreciated.

Cheers

Steve

Think this has been posted before.

I'm wanting to now what set points members are runnng with the Profec B Boost Controller.

I am wanting to run low at 12psi and high at 14.5psi.

 

Don't think mines set up right. Sometimes I'm getting, what sounds like the clutch slipping when I cane it. This doesn't happen all the time. Some people and telling me it is definately the clutch and some are saying it's the boost.

I know that when you incease the boost, the stock clutch can struggle.

Your comments much appreciated.

Cheers

Steve

 

Upping the boost will usually kill a std clutch. I fried two stock clutches in 12 months before switching to an uprated one :rolleyes:

 

Steve :)

Upping the boost will usually kill a std clutch. I fried two stock clutches in 12 months before switching to an uprated one :rolleyes:

 

Steve :)

Anybody else able to tell me their settings???

Hope they do steve as i think mine are wrong to. Im fed up of wasting fuel wazzing up and down the runway with the alarm blinging in my ear.FFS

Hope they do steve as i think mine are wrong to. Im fed up of wasting fuel wazzing up and down the runway with the alarm blinging in my ear.FFS

Can't believe no one on the forum has a Profec B set up properly, who can share some of their knowledge.

C'mon guys!!! :)

http://www.300zx.co.uk/forums/showpost.php?p=343197&postcount=11 ;)

Tell you what my settings have done the rounds lol

Hi guys

 

I'll post my settings on here tomorrow for my Profec B Spec 2, set up for 9psi and 14psi. Just off out now and not back til midnight... All I can remember is that my settings were a fair bit lower than the others I read in order to achieve the boost I wanted. At first it was just going into boost limit mode constantly until I decreased them a lot...

Anybody else able to tell me their settings???

 

I also had the same clutch problem as soon as i fitted this upgrade! removed the clutch and found the clutch had plenty of meat on it but the plate was scored just like i had been at it with a grinder!!

 

Fitted an uprated clutch and lightened flywheel..............hey presto purrrrrrfect.

 

Mine is set on 14 lo and 16 hi ;) and it just wants to dig a hole on full boost.

 

Had some early probs with car holding back on full boost but seems fine now

 

cheers

 

Dave

Ok, here are the settings from my Profec B spec 2, to achieve 9psi in LO and 14psi in HI, on stock turbos:-

LO:- SET=16%, GAIN=18%, SETGAIN=48, WARNING=110 with a drop of 20%

HI:- SET=33%, GAIN=21%, SETGAIN=85, WARNING=155 with a drop of 20%

The boost signal is tee'd in from the right hand side of the plenum balance tube.

Also I have a dual friction clutch which seems to be able to handle it.

 

Cheers

 

Derek

Tell you what my settings have done the rounds lol

 

Buddy, ive been using your settings since i put the profec on but now i 'can' boot it over here in germany, i keep getting the dreaded red screen. :cry:

wats this red screen do?

red screen = bad!! over boosting if i remember rightly

Does it depend what you set the warning at?? Got to get me a fookin boost guage!!!!!!!

Red screen is overboosting, and it is totally depenadant on what you set the warning to. If the gain is tweaked up too high you will get a spike that will send it straight into overboost, so turn the gain down a little if it's spiking. Also the start boost setting controls when the bleed valve starts to open the wastegate, so that will affect overboosting. You want a compromise between rapid spool up and overboost.

 

You really need a gauge to tell properly, as you can watch the needle overshoot and drop back. Trying to watch the digits moving quickly on the unit itself is almost impossible and also bloody dangerous as it will probably be well out of your line of sight.

Don't forget though, the settings will vary from car to car depending on lots of variables... State of the turbos, bigger and more effective intercoolers. The big advantage of an electronic controller is that it will always give you about the same boost regardless of atmospheric pressure, something boost jets will not do, hence the danger of them. Electronic controllers are 'absolute pressure' controllers, not 'relative pressure' controllers. So don't worry if you end up running different settings to everybody else. What works works. But GET A BOOST GAUGE!

Tahnks alot for your advice buddy :bow:

ive just fitted my profec as well and what i was wondering was do you block the 3rd hole that you dont use on the controle valve...???