Reviews for Superchips 3571 Flashcal F5 Programmer for 07-18 Jeep Wrangler JK

Should have done this years ago! If you have over sized tires on your Jeep stop thinking and get this tuner. Couldn't be simpler. Shift pattern and Gas milage very noticeable even when pulling my trailer.

Works great every time. jeep runs much better now that the shift points are correct with the larger tires. Running 35's with stock Rubicon gearing and it runs just fine. Speedo is dead accurate.

Just ordered

Perfect and easy to use

Very easy to use

This unit is a bit pricey but I noticed the difference in response in my JK within minutes after changing the tire size. Dropped the horn chip so now I can come and go in stealth mode. Also nice to be able to turn off TPMS when wheeling or if sensors do not communicate. Well worth it!

Instant fix for my tire upgrade on 2013 JK. Shifts as it should know and speedometer/odometer read accurately.

Finally broke down n bought one, have had my eye on getting one for some time.

This will let me recalibrate the speedometer for my larger tires.

Awesome product! I bought it to update the system for my new 35's I mounted and it was extremely easy to use.