big problem

[nelly26]

have you had fuel cut off bypassed if not, if you exceed the psi on turbo more than 10 psi it will cut out so will have to get the ecu chipped to bypass

[suprra_girl]

^ i'm confused

what has that got to do with his misfiring?

and just for future reference you can't "chip our ecu's" as such

fuel cut is not boost/psi referenced it is by hz which is what our afm measures and the hz frequency of fuel cut can vary it is generally between 11-13 for stockish vehicles and can be very low for high air flow vehicles

[nelly26]

when i had my boost put to 15 psi i found when it got above 10 psi she would cut out and miss fire i had her chipped and has been runing sweet

[suprra_girl]

as i said, it depends on your mods
most hit it between 11 and 13
i myself hit it at 8

and you cannot chip the ecu's but you can buy hks fcd's to wire in to move fuel cut

what did you buy to move fuel cut?

[nelly26]

i guess the chip in my ecu does not do anything then

[suprra_girl]

there is only one type of chip that is available for the 7mgte ecu and that is the (can't remember the damn name) but is made by reg reimer i believe

it's extremely costly to get done and not many do it... it's far easier to do the lexus 550's or hks fcd

so your chip not doing anything... more than likely
you probly had a boost leak and repaired it without even realising

[nelly26]

sorry ill have to find out what chip they used on ecu im not to sure i let jap speciast deal with it has that sort of work i dont touch sorry

[suprra_girl]

all you need to do is drop your ecu down, undo the 4 screws in the top and take a good pic of them

then we'll compare to stock ecu's and see what is different if anything

what mods have you done to your car?
also what year so i can compare to the correct ecu