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Ok so my problem is i was driving my 34 GTT like a week ago and the RPM and Speedo started showing 9000 rpm and 180plus km while i was doing less then 50kmph and under 2000rpm. Then it went back to normal.

So today it decied to do the same thing but only the water temp started aswell as digital km trip meter. But then they all froze half way and then dropped to show zero on all gauges. So i stopped and turned the car off and back on and there still doing it. Then my engine light came on and stayed on.

My car is running fine not missing or anything. Can anyone help me out to what could be the problem or places to start looking?

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Well the problem first started after i put the larger turbo on. like 4 days after. Today it was on the dyno and had bigger injectors put in.

The dash in original and it never happened before the turbo was changed.

Edited by whitneybra
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https://www.sau.com.au/forums/topic/377071-r34-dash/#findComment-6013678
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what ecu are you using?

the ecu should tell you why the check engine light is on

but if the dash cluster is going spazzo it could be anything

given its only started since youve had work done

id say thats probably your souce

ie loose or shorted out wires etc

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