RSDOHC

Hi,

I've recieved a stage 3 chip from PTS Motoring , 3 BAR Map , Greens, and RS 500 Cooler.
The boost was recomendet at 22PSI and when I have checked the AFR it was over 14 , so turn the boost back to 1.2 bar (and have now 12,5 AFR).

Please Post your AFR's for more information is it normal to drive with 12.5 AFR , because that wath i hear is under 12 on high RPM, the injectors are brand new the fuel pump is OK , what could be the reason for going lean.
Please Help

jon@work

iTrader: (5)

have you changed your fuel filter ?

have you checked the voltage at the fuel pump ?

LHD220Turbo

iTrader: (4)

Id check the voltage at the fuel pump; to be honest you are better off re-wiring the fuel pump with a direct feed from the battery.

Id also get a 044 pump to be on the safe side

while you are there changes the fuel filter as said by the bloke above

RSDOHC

OK I will fit a gauge to check the fuel pressure , on boost,.
At idle it should be 3.0 bar with the vacum fited , and on boost it must be 3.0 bar + 1.2 bar boost = 4.2 Bar or ?

JamesH

iTrader: (21)

IMO, anything other than late 11's I'd be worried, I certainly wouldn't be happy with 12s. Those are for ON boost, are you quoting on boost, or off boost fueling?

big mac

iTrader: (7)

check with pts to find out what fuel pressure they run as this varys

KSA-Cossie

iTrader: (4)

Should have got an MSD closed loop chip m8,as above though rewire fuel pump,get an 044 pump and new fuel filter,mine runs 11's flat out.

Jasesapphy

iTrader: (1)

mine runs 10.4-10.8 on WOT

tabetha

Fuel pressure should normally be around 3 bar idle vac on, around 3.7/3.8 with vac off, but as said check with chip supplier or instruction sheet(with chip) and set at what chip supplier intended though most tend to keep std pressure.
A pump rewire/relay is certainly a good idea, but you do NOT need to use cable big enough to start the QE2 like some think.
tabetha