Rb20Det Misfiring Help! :x.

[JSF]

Hi all,

Recently i purchased a stock 32 gts-t and did a lot of modifications to it, currently i'm running a TD06 20G, upgraded my fuel pump, 1000cc injectors, running e85, i have done the service as well replacing the spark plugs AND splitfire coilpacks (This was all done about 500kms ago). The car was running perfectly 100% but then started to misfire/backfire when climbing in the revs around 4 - 5k rpm AFTER i had been to a wet track day (drifting). I am unsure as to what it could be, but something i've noticed is it holds strong when around 6 - 7k RPM and on gate and doesn't breakdown/misfire, but only underload building up it will start.

The only thing i can think of at the moment is the Fuel filter which i have not changed and potentially could be the one from OEM, so perhaps the E85 going through the fuel pump could've also messed it up etc.

If anyone has some ideas/things to try it would greatly be appreciated.

- Justin.

P.S: For those intrigued i'm running 264rwkw @ 6k rpm :\.

[Frosty]

start with the basics mate and work your way up

plugs - replace them, check gaps etc

fuel filter - replace it

could be an issue with the tune? black smoke when it misfires?

and work your way up from there.....

[JSF]

The car was running perfectly for a while until a simple drift day and started misfiring. From what i've been told there's no black smoke coming out of exhaust when it misfires.