I Need Expert help PLZ

[foxydevil82]

Plz plz plz cna someone help me
I have a BMW 318i compact P reg it has been in the garage for 4 weeks put in because it was backfiring, they have changed cam sensors and said it made the problem worse, they have changed the brain of the car about 2 mmore things that i cant remember, they dont seem to know how to fix it and are going to charge me for te privilige what do i do about this.

[SpeedInfusion]

what year is ur car? this is the wronggg section

[riz]

Can someone please tell me -

can i clean my can and then put
1. Formula ! Carnuba car wax
2. Apply a coat of nanowax(eo) after a while !!!

Or vise versa ?????

Or do i put a seleant first ?????????

[riz]

Please !!!!!!!!!!!!!!!!!!!

[witeshark]

All the finish needs is a maintained coat if wax.

[Dwroyce]

i just bought this car and i has little power.... what can i do about that and how much would it be?

[theluis]

a fuel-injected car backfiring.... hmmm sounds like something to do with spark.. or knock... is it a car with a distributor??
you could try a knock sensor??
you have any codes??

on second note how did this thread go from car problems to caranuba wax?? lol