rikiboy456 Posted July 17, 2006 Share Posted July 17, 2006 about 6 months ago i put a 1.8 si engine into my gti- fuel econemy seems to be down a bit is there any difference in the ecu's? Link to comment Share on other sites More sharing options...
Trig Posted July 17, 2006 Share Posted July 17, 2006 If you just swapped complete engines then you put 1.5ps cams in and a 115ps ecu is fuelling the engine Link to comment Share on other sites More sharing options...
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