Which boost setting you guy running? I've been checking out that #2 setting and it seem pretty sweet, everything seems to b ok on that setting. Inj duty, o2, knock, no creep or spike.....seems like a pretty safe setting

What do you guys think

Also is there a formula for changing the PFC boost readout into psi....how does the boost reading work???

Thanks,

 

I use the #2 setting:

Primary at .9
Secondary at .9

The boost on the PFC reads anywhere between .88 to .93. That is pretty accurate control. That is about 13 psi.

All of my readings are within spec. O2 at .93, knock is steady, temps low, etc.

The only thing that kinda worries me is that my DEFI boost gauge shows readings of 14 or so.

I wish someone would solve this puzzle once and for all. Which gauge is most accurate, or which reading position is most correct.

PFC readings are in bar, so to convert to psi do the following:

(14.5 psi per 1 bar)

so a reading of 0.93 bar on the PFC is 14.5x0.93 = 13.485 psi

 

yea, my auto meter was running right at 14 psi and that what made me postthe question but according to everything it looks good. My o2 is even higher that yours and my injectors seemed good too.

If the auto meter is 14 it very well could be 13.5

Cool, anyone else want to chime in?

Thanks

 

I have the Peter Farrell boost gauge and its been reading 11.5psi, but im only seeing .62 on the commander 14.5x .62= 8.99psi this is a pretty big difference so I'm wondering which is more accurate.

 

Ok, I have a couple qustions....

1. You guys that are running boost setting #2, did you change anything else? Are you running the base map and just changed the boost setting with no problems?


2. When you look at the 2 defferent settings it shows you the boost level for that setting (such as .90) the out to the right it has a % (such as .6?).....what is that % and should i mess with it?

My setting #2 show .90 boost on pri and .80 boost on sec, should i be able to run .90 on both with no problems???

Thanks,

 

Ok, I have a couple qustions....

1. You guys that are running boost setting #2, did you change anything else? Are you running the base map and just changed the boost setting with no problems?


2. When you look at the 2 defferent settings it shows you the boost level for that setting (such as .90) the out to the right it has a % (such as .6?).....what is that % and should i mess with it?

My setting #2 show .90 boost on pri and .80 boost on sec, should i be able to run .90 on both with no problems???

Thanks,

 

I raised my #2 secondary to .85 and increased the % by approximately 4 or something close; look at the % differences for the #1 and apply the factor to the #2.

This way I get .9 bar all the way through to redline.

 

but what is that % out to the right??? I just feel more comfortable chaging things when I know what it is I'm changing....

I would look in the manual but i leave it at work and when we moved it got boxed, i'll have to try and find it.....not that its very informative anyway

 

"About Base Duty....
The solenoid valve duty must be changed in order to achieve desired boost levels. The duty cycle required to hit a certain boost level is usually determined by the wastegate spring. Wehn changing the desired Boost Level, please change the Base Duty. Even if the Base Duty is not exact, the unit will compensate during driving and correct the difference. The larger the Base Duty, the higher teh boost level and vice versa. "

 

Thanks for the info man!!!! I guess i need to turn the base duty cycle up a little then

Thanks,

 

One source of the discrepancy between the boost shown on the PFC and a aftermarket gauge could be the filter that is inline before the stock sensor, I havn't removed it to test this but if it's old and dirty it might throw off the boost readings.

Matt

 

My inderstadning is that the gauges are accurate, not PFC readings. but if you injector duty is cool, knock, fuel, etc. what the hell so what if you are actaully running 14.

Does your knock more or less stay the same on accereraltion, and what about driving, on and off gas?