UVic Formula Racing Posted April 30, 2022 Report Share Posted April 30, 2022 Struggling with a strange issue running our engine. We recently rebuilt the car and have only changed the exhaust system. Wiring was re-done between cars. Will usually start and idle but when trying to rev the engine it won't go past 2000rpm, doesn't seem to be leaning out or bogging because its too rich. At one point we tried increasing the ignition timing and that seemed to help get it to rev. Log file has been attached. Context of engine/car: Formula SAE Car, CBR600RR engine stock internals, stock triggers, Link Thunder G4+, Deatschwerks FSAE injectors, AEM 4-channel ignitor for coils, Aeromotive A1000 fuel pressure regulator, Deatschwerks DW100 fuel pump, Bosch 32mm electronic throttle body, custom intake and exhaust Throttle-100-no-rpm-change.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 30, 2022 Report Share Posted April 30, 2022 Doesnt look to be ECU related, no limits etc being applied. I would first look for missing air flow. Pull the intake apart to check it is all clear, I have seen guys leave a rag inside the intake or tape over a port etc. Check for restriction on the exhaust side too - a baffle come loose or similar. Quote Link to comment Share on other sites More sharing options...
UVic Formula Racing Posted May 27, 2022 Author Report Share Posted May 27, 2022 It turned out to the the crank sensor wires being swapped around. Which was a very weird issue to diagnose. Quote Link to comment Share on other sites More sharing options...
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