the wrx is missing when cold leave it run for ages or get it on boost and its fine just crap below boost some one said it may be the maf sensor would this cause it ? andy from ace motor sport is away so some one help lol

 

could be a number of things might be worth getting a
diagnostic check done or an ecu reset.
chris.

 

MAF problems can causes the idle to lift and fall is that happening ?

 

it just runs real lump and if you try to rev it it pops are backfires then clear and runs fine on higher revs basicaly if i leave it ticking over for 20ish mins then it will sort its self out and run fine when its hot

 

I'd take it easy and drive off boost till you get it checked, if it is a MAF problem i could do serious engine damage. Andy should be back next week, he went to the US for a week doing some testing with the new Evo's

 

yer its just sat there at the moment any way still smashed up lol but it will be back soon better than ever i can push it to andy's if need be i live that close

 

That must be a real crap job hes got

 

think i have found out the problem sat out side ticking over and i leaned on the inlet manifold air intake pipe and the revs changed on closer inspection found it was split half way around the pipe so the maf sensor was not getting a true reading and haveing a massive air leak but would this cause it to missfire??? got one on order will be here friday so fingers crossed

 

Sorted at last a number of things but all faults clear right the 1st was the air intake pipe had a split second one of the wires on the lambda sensor was broken third the new plugs i fitted from fast parts well the one was fubard lol checked the gap and was like the parting of the red sea adjusted and now all good did a ecu resut and coming up with no faults at last now all that is left is getting the body work sorted and maybe by july 2009 i will be at a meet in it lmao