Restricted Performance & engine light
RRS Supercharged 5.0 V8 2010
Coming home the RRS had a bad idle ok when driving just on idle, then after a few more miles had restricted performance & engine light come on it was running very uneven with no power at all.

Update used my code reader & gave an air mass sensor out of range, & misfire on cylinder 2 & injector fault again on clyinder 2 bought some air mass cleaner & cleaned both air mass sensors put some injector cleaner with octane boost in cleared all codes. now runs without restricted performance but still has a very slight idle miss but not when driving??
Any help please & thank you in advance

possibly need to clear adaptations so car can relearn rather than using old bad adaptions.

also should probably do a smoke test to see if theres any air leaks.

Have done all of that, Now going into garage to be checked out not sending it to the dealer as can't be trusted. Will update when garage give a report.

It’s now back from the garage it was an injector on cylinder 2 current out of spec & low resistance, had the injector replaced total cost £486.42 including diagnostic, running a lot better now with no faults coming up at all. It is going back into the garage on the 19th to carry out a walnut blast to remove carbon build up on the intake valves & to have the other 7 injectors bench tested, as the car has done 182k miles that should sort it out for a few years. The biggest cost of this is the labour as the supercharger has to be removed. Also at the same time having the front & rear ARB bushes replaced with the updated bushes & brackets, this sould stop the creaking.