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They can go down to something like 600 rev/mile, which I don't think covers 35" and taller well. You can get a specmo box like superlift's truspeed or granatelli has a couple and several other manufactures. However you going to pay half of what a tuner will cost on any of those. A tuner is the way to go since you will be able to correct the speedo to a degree and tune for power or economy.
They can go down to something like 600 rev/mile, which I don't think covers 35" and taller well. You can get a specmo box like superlift's truspeed or granatelli has a couple and several other manufactures. However you going to pay half of what a tuner will cost on any of those. A tuner is the way to go since you will be able to correct the speedo to a degree and tune for power or economy.
d'oh!!! why did i think that gettin an SCT tuner did NOT have a way to readjust the speedo....I coulda swore I read that. If you can then Im all set!
I don't know about SCT, but superchips, edge and Sniper can adjust the speedo. Since SCT is or was part of superchips, I'd expect them to be able to do it too.
I bought a Superchips speedo tuner. I got wildly ranging prices from shops and dealers for a recal and decided that buying my own tuner would end up paying for itself.