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hi guys

i have recently found that there is a misfire in my r33 gts-t at about 6500rpm under load in first gear runing at 6psi

when i run it at 10psi the problem gets worse and does it at about 4000, then 5000 then 6000 rpm.

it feels very similar to when you hit the rev limiter only you feel it the once.

the only mods are k&n pod filter with cai, turbo smart boost controler (swichable) and i have only just put a full 3'' exhaust on this week.

anyone know what this problem could be or any ideas?

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ok Robo ive done the search and what u say about the safc sounds good. but if the fuel dumping is my problem could this be fixed by simply turning the boost down?

how much would it cost me for a safc and a good tune?

i do want to put in an apexi power fc in my car soon, so would i be wasting my time and money buying the safc? also my car is an auto so i dont know if i can use an apexi power fc?????????

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i have the exact same prob and so do 2 of my other mates. i am getting mine fixed atm and one of my other mates has just had his done. it has to do with the coil packs being stuffed/cracked. the cover that is over the top of the coil packs in the 33's isnt exactly the best when it comes to ventilation of heat. i am getting bosch coil packs put in. and i run with the cover off in the mean time. the bosch packs don't fit under the factory cover, so they get mounted externally of the cover and are alot cheaper. :)

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robo

thanks for the info. i turned my boost down to 6 psi and the problem isnt as bad, but it is still there. it missfires at 6500 rpm, just before gear change. if it still does it with the boost down to 6psi this leads me to think it may be something else because its only just started to do it also.(within the last week)

or do you think i should just get a safc.

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