4L60e wheel dia increase

[paul67]

If I went from 18" rims to 20" the tire dia will increase, what would have to be done to alter the gear change speeds as it will not change till later ,the comp has already been altered by speed and performace but being in the UK sending back is not an opption.

[Lawrence]

I can flash it for you Paul if you want to post it to me, or fancy a drive down to Wales. I use Tunercat, and you fill in the blanks and it works out the scaling for you.

[paul67]

Thanks for the offer , the drive down would be best , just have to find some wheels first, will send pm .