Rb20Det Motor Sounds Like Its Running On 4 Cyls Occasionally?

[rb_rb]

Hey guys Im new to this forum but thought id see if anyone here could figure out whats wrong with my motor.

Every now and then the motor seems to be dropping off 2 cylinders and idles very rough. Have replaced spark plugs, injectors and replaced coil packs with waste spark setup, have also replaced fuel pump.

Most of the time it runs mint but every now and again it will start to idle rough almost like its on 4 cyls, and gradually picks back up again after a minute or two.

Any ideas??

[GOJ1RA]

Weird. I used to have a GTS-T that had a similar problem, but I threw a splitfire coil pack in and it fixed the problem.

Noting you've already changed coils, not too sure.

Got a decent tuner close by?

[rb_rb]

Yup but no licence to get my car there lol. Have also changed ignitor pack aswell. Cant figure it out

[Udi]

Hey man

My RB20 is doing the same thing were u able to find the problem?