Bugeyed monster

I was on the m62 yesterday and was progressively accelerating the all of a sudden the car felt like it hit a brick wall for a split second. i looked down and the engine management light came on for that split second and the revs dropped to 0 then came back alive. it's done it twice now any ideas ??

Infected by sti

iTrader: (6)

Mine done the same not so long back, was a split vac line on mine, check all your vacuum lines to start

terzoscooby

Might be over boosting. Ecu cuts ignition if boost pressure goes over limit. It is most noticeable in cold weather. Might be a sticky waste gate is solenoid valve.

99mrbe

iTrader: (1)

^^^ thought they cut fuel on over boost not ignition???

addi monster

iTrader: (6)

Could well be just over boosting mate, cool weather leaning out the mixture causing more boost,.

terzoscooby

Feels like hitting a big rock. Mine did it for weeks until I got a perrind 3 port put on and had the mat adjusted to open waste gate fully.
I thought they cut ignition and fuel to prevent lean out but might be wrong and may depend on ecu. I am sure a mapper will put me right.