went for mapping today but had problems?

[shaunwil]

If you are running with the stock pill you will only see 10psi. The boost pattern is 10-8-10psi on a stock setup with the pill. How long would it take to save up for a boost controller ? Well worth the money to get better control of the boost level.

Don\'t go for the Apexi add-on boost controller. Have a search at some of my early threads and there are some maps of it and the profec. The apexi add-on was terrible, just couldn\'t keep up with the boost levels. The stand alone apexi is supposed to be better but the profec is a very good bit of kit.

Was the last tune one for an apexi setup too ? He usually just charges by the hr (min 1 hr) for any more updates unless major.

Shaun

[rparker]

Wrong.............
 

Not without the apexi boost control kit which is just an external boost solenoid.
 
You can up the boost on the commander to a point without the above but only by changing the boost duty cycle NOT the boost value as such.

[thomas_mk6]

it seems like every1 has different ideas to what is correct lol

i was under the impression that with the stock pill in place and no aftermarket boost controller the ecu could control the ammount of boost to a certain point? say to .8 bar if i wanted

is that not right?

[neil_jdmr]

You can certainly run higher than 0.8bar on a stock pfc without the boost controller upgrade i have a low setting of 0.85 and a high of 0.9bar on my pfc and i dont have any type of boost controller.
 
At 0.9 bar the pfc records between 0.88 and 0.91bar but injector\'s are maxxed and
at 0.85 the pfc records between 0.81 and 0.85bar with mid 80\'s injector duty
 
The deviation in boost pressures recorded comes from ambient temp\'s changing i.e in cold ass 2 degree temp i get a strong 0.9 but in the summer mid 20\'s i was getting 0.88bar all on the 0.9bar setting.
 
Again to change the max boost it is the duty cycle figure that has to be raised, i.e the amount of time the wastegate remains open (i think).
 
Someone more knowledgable about the pfc on twins needs to step in here but that was my take on it.
 
What i do know is, You DO NOT need a boost controller to control boost with a pfc, The pfc will do it for you but not as steadily as a standalone boost controller will.

[marco]

the pfc can control boost to 0.85/0.9 bar without a controller, mine did when mine was running twins. also the rats nest simplification only removes the emmissions side of things, so it shouldnt have affected turbo control. from memeory however (i havent got the diagram infront of me) it doesnt have a line to the FPR (which you need) and one of the solenoids is back to front, which is really easy to miss if you dont stare at the diagram for ages! i think it is the charge relief solenoid (but could be wrong). if that is connected up wrong that might be an issue?

[shaunwil]

If I\'m wrong I\'ll hold my hand up. I didn\'t mess with the pfc boost function. I swapped to a boost controller early on because I went above 0.9bar.

Shaun

[HaywardRotary]

PFC can control boost as high as you want. Just not a good idea running high boost on stock twin turbo\'s.
Regards
Carl

[thomas_mk6]

PFC can control boost as high as you want. Just not a good idea running high boost on stock twin turbo\'s.
Regards
Carl

hi carl, she is booked in for mot tomorrow and then i can tax it monday, should be up to you around the 25th (pay day!):3gears-rh