except mines an eight valve turbo! running OFAC so theres no AFM. with the zetecs they sometimes grumble on no 1. you can pull the injector plug off and theres no change in engine behaviour till around 4k. correct me if im wrong but ive found that means youve done a valve! the flat spot on mine feels like theres no fuel or something then as soon as it hist 4k it spins the wheels and fcuks off big time. i guess its not fuel though as it pulls later on in the revs where it needs most. havnt tried pressure regulator because i can hear the pump change note as i touch the throttle, so something is happening. its been fine for ages thenone evening bam, no power under 4k. on a good rag its not an issue cos it never goes under that but on hills and stuff its a bit poo!. checked all boost pipes and it boosts and hold just 1.2 bar (on a stage one chip but im not complaining lol). any ideas on the ignition timing setup. it could be backing off somehow. at 4k it has a wee stutter just before it kicks in. its driving me mad!!!!!!! HELP