Engine icon has lit up in the speedo display and autostart stop will not function. Also when the car runs over 4000rpm, it feels like it has no power at those rpms (well at least less power than what it used to have).

At first the dealer claimed that these issues were due to the spark plugs and after the change, car seemed ok but only for the next 2-3 days, day 4 and the problems came back.
Took it back and then he found a loosened tube that was leading to the WasteGate, he fixed it and car again was working good again. The next day after the fix same issues returned only that so far the engine icon hasn't lit up, but i believe it will soon.

Any one had the same issues or know what i might be looking for as a next step cause neither the spark plugs not the WGate tube seem to be the cause?

I have the same problem with my r56 right now it has been at the dealer for about 5 months and no matter what they change the problem keeps coming back it's really weird none can figure out what the problem is

I have the same problem with my r56 right now it has been at the dealer for about 5 months and no matter what they change the problem keeps coming back it's really weird none can figure out what the problem is
Hi, you have exactly the same issue as i describe? Is it the same in all the phases as mine? Auto Start Stop, Rpm, Engine icon etc?

Yea when I would start mine it would die then if it did start it would mis fire and every time I would bring it to them they would jus fix something and clear the engine light and when I would get home I would have the same problem they ant figure it out they changed the spark plugs,coil packs,timing chain,both fuel pumps and all the lines, injectors, intake valves, re mapped the computer, and gave me an upgraded head cover and they still can't figure out what's wrong with it. Did you do any engine work?

nope no engine work done, only spark plugs but as you describe your issue, i dont think its the same, what do you mean yours dies and misfires?

R56crazy i guess by not answering maybe we dont have the same issue! right?

A friend indicated from his experience that this is very possible to be a sensor issue!

a lot of times odd things like this end up being the fuse box. i've seen it twice. dont remember if it had all your same symptoms u r describing but from the looks of it everything else has been changed. start your car and wiggle the hell outta your fuse box

how do i wiggle with the fuse box? what shall i do?

the fuse box in the engine bay. with the dme. just start the car and rock it. if the fuse box is really bad u will be able to tell. if not it could still be it. the time i saw this the carkept setting off misfire and hp fuel pump faults

dme?
misfire?
hp?
im not too good with abbreviations and a few terminologies!

dme is the engines module. hp fuel pump is high pressure fuel pump.

stand infront of your motor. look at the air box. turn slightly to your right. see the black rectagular box and the other one next to it with a bunch of wires going into it. rock that witht the motor on. like i said they have changed a lot of thing on your car. im surprised the fuse box was never checked.

what do you mean they changed a lot of things in my car?

oh my mistake. i confused your post with another.