Microtech Computers & Running Lean

[AlexR31]

Guys & Girls,

I need a bit of help with the computer in my R31 GTS-X.

It has an ECCS R32 RB20DET with a Microtech MT-8 and a handet and the a/f ratio on the handset is showing about 17-18.5 on 8 - 12 psi (HKS Boost Contr).

Does anyone know if I can plug this comp into my laptop and if so where do I get the software? Any ideas on why it is running so lean? The error check on the computer is coming up with an error on the "air" bit but I don't know if this the the O2 sensor or the AFM. Any help would be greatly appreciated.

Thanks

AlexR31

[b2barker]

I would guess AFM coz the Microtech runs open loop.

[Freebaggin]

Hi there,

Tim at RPM here in Adelaide would be able to help you over the phone no worries, he has years of experience with the Microtechs, 08 8277 2266.

I have spoken to him in the past about the A/F ratio indicator on the handset for my car since mine can sometimes indicate 18-19 ratios as well under boost and Tim's response was that the output is not accurate so it might not be anything to worry about. So the best thing for you might be to get it dynod with a proper A/F ratio meter in the muffler tip, like an Autronic version.

By the way, I have just placed an order for the laptop addapter for my LT-12 for $75, so looking forwrd to the data logging etc.

Can an MT-8 run with a laptop as well now?

[AlexR31]

Freebaggin,

I just spoke to Tim on the phone and he said that the O2 sensor in the exhaust is probably faulty as the car would barely run if it were that lean.

Also I can't plug the MT-8 into a laptop, I need to upgrade to an LT series computer. What did yours set you back? I only need the board and chip as I have a complete loom and all sensors at the moment.

Thanks for you help

[Freebaggin]

AlexR31,

Well my computer is probably not a good example as I got a special price since it was the development vehicle for Tim's/Microtech's new "Plug-in" R33 LT-12, so I really don't know how much just the chip and board would be, again Tim at RPM or Dom at Microtech would be best.