my car over fuels on idle and mid range but stops over fueling on boost what might be the problem

 

I guess at water sensor at back of block inlet side

mark

 

The water temp was changed

 

you tried a different set of injectors,may you got a sticky 1,have you checked you fuel pressure,possibly fuel reg

 

i havent checked the injectors the reg is new as well

 

Can you elaborate on the problem mate? What's the spec and how do you know it's over fuelling midrange and nowhere else?

 

i took the car to r/r cause when the car is ticking over theres a strong smell out the exhaust. when it went on th rollers the guy told me the car is running rich on idle and midrange but ok high up the revs. the fuel pump wasnt working properly as it was weakening when it was made to work hard. so pump was changed to a 044 and i was told to get a new wiring kit for the pump i havent been back to r/r yet. spec is T4 greys bd10s i/c exhaust and your chip was told by last owner its stg 3.

 

Why didn't he adjust the CO screw to sort out the rich idle and midrange fuelling? That's what it is there for.


Give me the serial number off the chip and I will tell you what its mapped for.

 

I dont know. Can i adjust safely without it being on rollers would it cause it to run lean on boost. I will have a look tonight would the code be on the invoice?

 

Hi,
The CO screw is a global modifier but its offset so it has more effect at idle and low throttle than at full boost but it WILL lean full boost as well so you need to be careful with it.

Serial number will be 4 digits and on the chip itself. Image below of what you get when its new, but the bit your interested in is the serial number.

 

I have exact same problem and was thinking CL lambda would solve it but it was fine before i took it of the road a year ago so shouldnt have to. Thinking of getting a new chip as not exactly sure what is in it, car is running t35,803's,500 ic,3 bar map sens, -34, its a 4wd saff so l8 ecu.