Originally Posted by Matt
Originally Posted by Stu @ M Developments
wouldnt run "worse", it would be told to run different though surely.........ect sensor related for one?
piston to bore clearance not taken up?.......when its cold and slapping wouldnt you get more blow by and less compression?
Are you suggesting that if you did a cylinder leakage test on your cold YB that it would FAIL the test Matt? Of course it wouldnt. A totally wankered engine may well run worse cold due to lack of compression, but thats kind of irrelevant to teh topic IMO.
The fact is, the cold fuelling and spark tables in most YB engines out there are garbage and need a week or two's mapping to get them a bit more sensible. Or are you all going to tell me your parents BMW's etc all run like shit when cold as well? How about your dads rather sexy new M3 Matt? Other than its ECU induced cold rpm limiter, does it drive noticeably different cold to hot?