4.10 without tuning mods

[roadpig58]

hey fellas(and ladies)- anyone out there converted to 4.10 without pcm
tuning?- thanks- roadpig

[Smokie]

hey fellas(and ladies)- anyone out there converted to 4.10 without pcm
tuning?- thanks- roadpigIt has been done, without tuning the results were: speedometer off, little or no gain on take off.

[RF Overlord]

^^^what Smokie said^^^

Your speedometer will read 15% high, and your shift schedule will be off, so you won't get the full benefit of the gear change. It won't HURT anything, though...

[stevengerard]

Yep, you will notice a difference, but its a huge difference when you reprogram. Oddly enough it did not effect my traction control