Originally Posted by tabetha

They can be set up on a cheat, by tweaking fuel pressure.
What did you set the fuel pressure to ?, as it becomes a LOT more critical the larger flow the injectors.
I also forgot the 3 bar map sensor!!
You need to set the fuel pressure, then the CO which again is a lot more critical now for smooth running.
Depending on whose chip it is(?), will determine what settings to use as the map will have been written with these at a certain value.
Most(but NOT all) use std fuel pressure 3 bar plugged(vacuum) and about 3.5/7 unplugged(sealed pipe) vacuum.
Co is mostly set around 2.5% CO.
You could always put the std stuff back in, drive to a tuner here, and simply swap the bits over(outside unit), before the tune as it is easy stuff to do ?
tabetha