R33 Gtr Stuttering Problem

[AzN]

I have a standard R33 GTR and recently installed a Apexi catbat + decat pipe (legal in NZ).

Initially the car felt more responsive and had more power when I installed the exhaust but I noticed that there was a stuttering problem around 5000rpm +.

I went for a drive yesterday and the car feels like worse and sometimes almost stalls. It feels like it's running out of gas and sometimes the revs drop right down whilst driving.

Anyone have any ideas on what might be wrong?

[levinboy]

Coilpacks might be on there way out

[IMACUL8]

Read this thread --> http://www.skylinesaustralia.com/forums/topic/113284-fixing-your-rb26-afms/

My GTR - was perfect. about a month ago - started to stall at lights, shuttered at low rev, just didnt feel quite right. Did the above - as well as earthed the fuel pump.... AMAZIING. Its never driven harder, smoother or better.

Fixed everything for me.

Reg

Dan

[calebR33]

CHECK UR AFM PLEASE! thats how i fixed mine

[AzN]

Did you fix it by doing the method IMACUL8 posted?