Welcome to BMP Calibrations!
Custom Engine and Transmission Tunes
Specializing in the Jeep JK/JL/JT V6 platforms
Custom Engine Tuning
The newest generation Pentastar 3.6 V6 Engine, or PUG (Pentastar Upgrade Engine), is known to have odd torque delivery, a stutter/hesitation sensation during low load acceleration around 1800 and 2800 RPM, and to feel sluggish in our heavy Jeeps.
Tuning from BMP Calibrations optimizes spark timing, VVT, torque management, throttle control, wide open throttle fueling, part throttle fueling, and more to make your 3.6 feel the way it should have felt from the factory. On stock engines, gains of 30 horsepower and 30 torque are possible with 93 octane fuel. More moderate gains of 10 horsepower and 10 torque are achieved with 87 octane fuel. If you have a supercharger or turbocharger kit on your Jeep, 60-80 horsepower and 60-80 torque increases are common.
Power numbers are only a small piece of the puzzle. BMP developed tuning on the 3.6 platform with one main thing in mind - BETTER DRIVE-ABILITY. Usable torque under 3500 RPM. A more refined and smoother running engine. Better throttle response. All while maintaining or even improving fuel efficiency and maintaining emissions compliance and any remaining factory warranty.
Check out “Tuning Guide - Start Here” at the top of this page to get started!
Transmission Tuning
The 8 Speed 850RE transmission and it’s sibling ZF8 transmission are some of the best transmissions in the business, pairing top notch reliability with great shift quality.
Unfortunately, from the factory, they are programmed to keep the RPM low and slow. In some cases, this transmission is known to “hang” on to gears after heavy load situations as well. This can all be fixed with custom tuning.
Jeep programmed the transmission to work best with small lightweight tires, which, let’s face it, few people keep on their Jeeps! Transmission tuning from BMP Calibrations completely remaps upshift and downshift scheduling, keeping the engine RPM where you want it and where you need it at all times. The transmission is always in the right gear, and always ready to downshift to the right gear for passing or more aggressive driving with a transmission tune from BMP Calibrations.
Additionally, BMP Calibrations enhances shift quality itself within the transmission. Through months of testing and development, BMP came up with a calibration that makes shifts seamless and smooth but clean and less sloppy than stock with the perfect feel for daily driving.
Check out “Tuning Guide - Start Here” at the top of this page to get started!
Do you have a JK/JL/JT with an aftermarket supercharger or turbo kit? BMP offers full custom tuning for you too!
-Many “off the shelf” tune calibrations provided by Supercharger and Turbocharger companies are far from properly dialed in.
-It is common to have misfires, stumbles, drive concerns, lean fueling, rich fueling, lack of part throttle boost, and more issues with these calibrations that come from the supplier of your supercharger kit
-BMP can completely rewrite your existing tune to make your boosted Jeep run the way it should have from day 1.
-BMP will remotely log and tune your Jeep to perfection through revisions and professional log review to make sure your getting the most reliable and safe power, all while maintaining factory levels of drive-ability
-BMP understands the fundamental principles of making safe reliable power in a boosted Jeep and knows exactly how to set up fueling, spark timing, variable cam control, throttle body and airflow control, and torque management so that you can get the most from your boosted application.
-Many professional shops from all over the world use BMP Calibrations for their advanced builds due to the personal touch and expertise.
Testimonials and Customer Reviews
Look BMP Calibrations up on the JL Wrangler Forum for even more reviews!
“Drivability is so vastly improved….I got the 91 tune. No revisions so far, and if I don't ever get them I'd be completely satisfied….the transmission programming is such a vast improvement, coupled with the shift of the torque curve, its just a better drive in every way imaginable.”
-Ben M., 2024 Wrangler 3.6 8AT
-”It is now usable under 2K RPM, whereas before it was kind of a joke. Temps were stable….Just so much more refined than before!”
-Stan B., 2019 Wrangler 3.6 6MT
-”Game changer especially with the manual - pretty much transforms the Jeep.”
-Stefan B., 2024 Wrangler 3.6 6MT
-“Better, smoother, quicker, and fun this jeep is to drive now. I got the 93 tune which I was running anyway because of how bad it ran on 87 when I bought it. My fuel mileage over that 850 miles was 20.2mpg, 2mpg better than the stock tune. This tune will pay for itself eventually and I would pay double.
-Michael M, 2025 Gladiator 3.6 8AT
“Brad tuned my 3.6 for 93 octane, and in my humble opinion, it's the best bang for your buck performance wise. It is a transformational experience”
-Anthony M, 2024 Wrangler 3.6 6MT
“My 2025 MT runs and drives like it should have from the factory. Silky smooth, with the power in reserve to push my JL like a scalded cat when I need it!”
-Cary C, 2025 Wrangler 3.6 6MT
“It makes the Jeep 200% more responsive, no studders. No hesitations. No need for pedal monster, firm crisp shifts.
Drives like an entirely different vehicle. I am amazed at how de tuned this thing was in stock form. It makes the handling and drivability so much better”
-Lance G, 2025 Wrangler 3.6 8AT (w/40s and 1 ton axles)
-My WIllys runs 1000x better with engine and transmission tune! As my daily driver on the street it's great and on the trail it felt very confident and smooth, thanks again!
-Nathan C., 2024 Wrangler 3.6 8AT
”Brad wants every tune to be the best for each customer. I send him a log file and I think it’s at its best but when I get around to looking at emails here’s a new tune Brad wants me to try because he found something in the data log he could improve on. This is not a one tune fits all service, each one is unique to each customer.”
-Kendall K, 2021 Wrangler 3.6 8AT eTorque
-”ECU unlocked, reinstalled, trip to Brad’s. Tune for 91 octane. All problems gone! The engine runs smoothly and with a lot more mid-range power. It can now cruise easily, even down to the 1,500-2,000 rpm range.”
-Steve W, 2026 Wrangler 3.6 6MT
-”Brad is very likely the most knowledgeable 3.6 Pentastar tuner in the US. He has over 900 revisions of tunes for the 3.6 Pentastar and ZF 8 speed transmission. I highly recommend him if you want the best tune as well as any custom tuning for your preferences.
-Troy H, 2022 Wrangler 3.6 8ATBrad is very likely the most knowledgeable 3.6 Pm tuning for your preferences.