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View Full Version : Vems 3.8 on 850 T5, a few Q



elior77
Saturday 14th May 2016, 12:18
Hey !

We got this built T5 engine, with a large turbo and COP, all running from VEMS 3.8, I'm the tuner of this car, cold and hot start are very difficult, some time it will start in a sec and sometime it will not...

Primepulse ?
Crank VE ?
Crank enrichment ?
cranking deg ?

Any thing else ?

Thanks !

550cc injectors
With the stock ECU (when stock coil) it starts right up.

Tim Williams
Saturday 14th May 2016, 22:02
Hi, if you disable fuel trims you'll be able to tell if you got the VE map wrong as I'm sure you would of got the injector scaling right.