Hi all have had a few mods to my car done a while ago exhaust ,valve springs.edit etc and is has around 290rwkw but when I give it bit now and then it pings have been back to the tuner and made some reajustments and seemed to fix it but it is back again. The only thing I havent done to it yet is change the plugs which a lot of people seem to have done will this help with the problem any tips would be appreciated oh and I do run it on bp ultimate all the time