Matt_JD Posted May 7, 2003 Share Posted May 7, 2003 Hello! I have a problem with my ( sadly not a Seven ) 'k' powered car than i am hoping you can help me with. Around 3/4 months ago i changed my 1400cc engine for an 1800cc one but retained the standard plastic inlet manifold and injectors The engine is standard apart from Piper 270 cams, vernier pulleys and a Trophy throttle body and is running on Rover MEMS By running the FSE at 3.5 bar it compensated for the incorrect injectors and seemed to run fine. I changed the 1400 injectors at the weekend for cream 1800 ones (part# 0208 150 749) and ever since have had problem with it running rich, more so at start up when it struggles to run. I have progressivly dropped the FSE pressure which seems to help but its now running at 2.2 bar warm idle and still seems too rich - its still drinking more fuel than i'd like. Can i safely go lower with the FSE pressure or am i hitting the limits of MEMS? - or have o over-compensated with the injector size? Hope you can help Cheers Matt Link to comment Share on other sites More sharing options...
Peter Carmichael Posted May 7, 2003 Share Posted May 7, 2003 How can the MEMS possibly know what injector size you are running? Equally, how does it know that you are running a Trophy throttle body. As far as I am aware, the MEMS is calibrated with parameters based on the injectors, throttle body configuration and engine capacity, using a complicated algorithm to work out the fuelling. You have mucked about with all three (and fuel pressure) so it is not surprising it is confused. You should trade for a 1.6/1.8 MEMS with matched immobiliser, which is expecting to run the cream injectors at 3.5 bar. Link to comment Share on other sites More sharing options...
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