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Has the gearbox been changed?

If it has and doesn't have the same ratios as the original it will confuse the ecu as the speed and rev won't match what it's expecting

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Hi

Thanks for the info

It's a z20let

Dave

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Ok thanks

I've done remapping on my bikes but not on the car. What's the best interface/kit to get for the Vauxhall?

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Thanks for the info I'll have a look later

Is the map only accessible via a tech2 or are there any other systems to allow access

Dave

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Hi
Does anyone know if it's possible to reprogram the cruise control ratios on a mk4 astra?
I have change the gearbox to the six speed and all was working as normal. I have now replaced the sixth...