uk300scoob

iTrader: (24)

iv ruled out bad fuel as i use the same station every week and the problem only does this now and again, when i rev the car up the revs slowly in 2nd when it hits 4k upwards it jerks but if i was to put my foot to the floor from low down the revs in 2nd and keep it floored it will rev right out fine and go through the gears fine

could my dump valve cause boost issues?

KAS35RSTI

iTrader: (73)

It could do.

uk300scoob

iTrader: (24)

i must try the oem one and see if it clears the issue

alcazar

iTrader: (2)

Try that.
Also suspect plugs/plug leads.

stedee

iTrader: (4)

what are your mods

uk300scoob

iTrader: (24)

plugs where changed already, mods are turbo back decat, ported headers, sti tmic, k&n panel filter, walbro fuel pump, hks ssqv, ecutek remap, its and 07 wrx

alcazar

iTrader: (2)

Changing plugs CAN cause damage to plug leads..........

chocolate_o_brian

iTrader: (22)

Who mapped the car with those mods?

uk300scoob

iTrader: (24)

bob rawle mapped it, the leads are fine aswell as plugs

chocolate_o_brian

iTrader: (22)

Have you emailed/called Bob? I had a couple niggles after my car was mapped and although nothing to do with his mapping expertise, he took the time to reply several emails which eventually sourced the issue through process of ellimination

uk300scoob

iTrader: (24)

have you got a username or email for him please?

stedee

iTrader: (4)

i like your signature, one of my favourite films

alcazar

iTrader: (2)

How do you KNOW the leads are good? How did you test them?

uk300scoob

iTrader: (24)

sorted isnt anything to do with ignition or plugs, was the dump valve as it seems as i have put oe one on and hasnt jerked again so far and seems hks one was leaking boost, making the car run alot richer and constantly popping