Jason B
Official Vendor
I installed the sprint booster on my 2018 4R about 3 months ago, I did the proper installation where you open the door and wait 10 min, etc.
No issues at all so far.
One thing I noticed that I did not see in the reviews, besides the faster throttle response, the 4R upshifts faster if I push the gas pedal a bit more, like if I want to pass a car, or speed up on the highway.
Before, I had to push the pedal quite a bit for the 4R to upshift, and quite often it would upshift 2 gears or more - the engine would all of a sudden rev very high and the 4R would jump forward.
With the sprint booster it is much easier to control the upshifts.
I set it to green level 8. The red is waaaaay to responsive and hard to control for me.
Thanks for the feedback. What you mentioned is one of the reasons I have some customers say they've gotten better gas mileage. Rpm's spiking constantly on a trip will just burn more fuel.
Burtman Industries Sprint Booster, 5 year warranty T4R members, Covid-19 free and UPS EXPRESS SHIPPING!
From my experience it seems green 7-9 is the favorite setting for a nice linear feel, without it being too aggressive. I have these back in stock again for anyone wanting to order.