just took my cossie out for its first proper spin since i bought it a couple of months ago and when it comes on boost it backfires like foook! i remember the last owner said he replaced the plugs a few days before i bought it as it was choking up as all he ever did was move it in and out of the garage to clean it lol (0 miles covered last year and less than 300 miles in last 3 years) i havnt checked them myself yet but what gap should i set them too, its got stage 3 chip and running greens
cheeRS