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I was at the dyno with a customer a few days back, the dyno was ok and we ended with ~350hp and ~55kgm from this 2.3L 5 pistons built engine with a large YUKON turbo (GM5(?))
It melted a piston on the way home, boosting 20PSI
The injectors showed 90% on the dyno - 550cc injectors.
EGT was under control, the WB controller is in side the ECU (VEMS).
Is it just a momentary lack of fuel a severe lean condition ?
Glad to get some feed back on it.
Thats a damage from knock. Have you used a knock detection system for tuning?
I did, I can use a better system (just ordered one)
The surface of the piston is unharmed no knock or detonation signs on it...
Just high temp meltdown...
So cheap ecu... I bet the injectors fit that bill too. Which ones are they?
Perhaps fuel starvation under acceleration . No problem shows on the dyno but on the road ?
Bosch 550cc injectors from S60R 2007...