AndersL Posted May 21, 2014 Report Share Posted May 21, 2014  Hi I have my G4 Xtreme up and running on a M50 turbo. Engine sounds and seems healthy, and I`m pretty sure I`ve got the trigger settings/offset right. But my TDC-marks on the crank is not visible when looking from above the engine. I had to use a mirror from underneath. So I`m only 99% sure that I`ve got the offset right. I checked out a E36 Base map I found in a Vipec folder, and I found a different offset. So I`m wondering what trigger offset really means? Is this a constant number for a certain engine or can this number vary from one ECU to another?? Regards Anders             Quote Link to comment Share on other sites More sharing options...
Simon Posted May 22, 2014 Report Share Posted May 22, 2014 It is generally within a couple of degrees if the engine spec / triggers are the same. Quote Link to comment Share on other sites More sharing options...
Fredrik Pettersson Posted May 22, 2014 Report Share Posted May 22, 2014 Hi Anders I have found that atleast on the m54 the trigger wheel from a different size bore does not have thesame tdc markings i had to make my own markings on the pulley and check that the engine was in tdc(there are serveral easy ways to check, a ruler through the spark plug,pressure gauge to the sparkplug, flywheel tdc pin,camshaft tdc etc..) Quote Link to comment Share on other sites More sharing options...
AndersL Posted May 22, 2014 Author Report Share Posted May 22, 2014 Hi Ok. I think I have to make my own tdc-mark on the sump or something. Thanks for tip! Â Regards Anders Quote Link to comment Share on other sites More sharing options...
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