Can anyone help, Ive currently got a friends Esc Cos small turbo and it has a PTS piggy back chip plugged onto the EEC iv ecu but at 1.2 -1.3 bar of boost which it what it was set on it runs way too lean ( AFR 15:1 on boost past 4k rpm. I put a softer actuator on and set up about 0.8 bar of boost but it was still a bit lean. It has an uprated pump so fuel pressure is ok but its a bit strange, ive cleaned all the contacts up on the plug but no better.
With the help of a local tuning firm who does a lot of OE remapping and has mapped these eec iv's years ago we are trying to load the modified file he has to the chip but are struggling.
Has anyone got any modified piggy back chips or normal modified chips / ecu or any ideas?
Many Thanks in advance
Colin