R33 Series 2 Ecu Question About Idle Screw (missing)

[skyline79]

Hi everyone.

Im hopeful that someone will be able to help me work out why the idle screw and red indicator light cannot be found on my ecu. The holes are there in the case but the screw and light are not there... Does anyone know why this might be the case ? Is there a modification they make in Japan that does this? Is it a totally different computer all together?? It mount in the same postion neatly, I havent had a chance to get the numbers of the side to check model numbers yet...

Cheers

[d00dz]

I tihnk some ECU's didnt have this, later models.

Just change the idle via the screw in the engine, near the AAC valve?

[skyline79]

Hi, thanks for your help, cant find any info on this at all... Yeh Ive adjusted that screw all the way in, lowest rpm achieved was 785-800rpm.

Wanted to see how idle was at spec setting of 650 plus or minus a few...

Checked for air leaks, cleaned IAC, cleaned air flow reg, checked for leaks at every possible connection or gasket,

It is running good at the moment, just wondering if there was a simple reason for not having this idle screw on the ecu. Mine is a series 2, 1996 r33 rb25det Not sure if you knew roughly when they stopped the idle screw thingy...

Anyway, thanks again