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Speedo off fixed

Predator support for GM gas vehicles

Moderators: mikel, 06MonteSS

Post Fri May 12, 2017 5:27 pm

Posts: 9
Ok things were good then I modified predator tune turning off egr and air and increased mph in 1st at normal to etc and now Speedos 50% fast!
I might have gone into ratio and re entered the 3.73 ratio but it was already in there
When I check now Ratio and tyre size is correct
2000rpm in drive shows 60mph instead of about 40!
Thanks scott
Last edited by scott tomcat on Mon May 22, 2017 5:11 am, edited 1 time in total.

Post Sat May 13, 2017 3:44 pm

Posts: 9
Got it fairly accurately now but had to set gears to 5:13 will this have any negative impact?

Post Mon May 15, 2017 4:13 am

Posts: 9
As i was getting no advise decided to remove predator tune, then with original back on speedo was correct.
Reloaded the predator tune and now its ok , checked the gears was correct at 3.73
Went into the tyre size and it originally comes up 00's in all fields so I recon adding the correct sizes here must have messed up the speedo readings -guess this field doesn't work properly.

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