Hey, just a quick question to put my mind at ease. Iv just been out to the scoob, its been sitting a couple of days and tried to start it. It turned over and didnt start so i tried again this time there was a MASSIVE bang almost like a gunshot, really really loud, Crapped it fearing the worst but tried again and it fired into life.

It has a fully decatted exhaust and decatted downpipe. Im figuring it was just excess fuel in the exhaust from it not starting backfiring? If so, would it do any damage? Any tips to stop it happening again? Thanks

 

Mine does the same every so often, I put it down to not being mapped