Im wondering if anyone could help me....

I changed a few bits on my car, gtb1756vk, airtec fmic, clutch blah blah blah i then got a base map from hidden power.

It came off the road for a little while as i was upgrade to ap racing brakes, once it was back on the road i drove to the shops bo troubles then on the way back it just cut out and didnt want to start so i got it towed home, it then decided to start but it randomly cuts out and doesnt easliy start again.I can be driving normal and it will be fine then boot it get into 4th then it seems to loose power and it will cut out unless i fight through it and it will go into limp mode.

Sometimes it will just cut out on tick over.

Sometimes it will just cut out before i get to the end of my road.

It doesnt sound right on tick over either the engine sounds fine but the exhaust sounds as if its mifireing.

Any suggestions would be very apprieciated.

Thanks.

Injector loom fault or CPS.