This is a review and analysis of the JMS PedalMAX Throttle Enhancement device. As with previous tuners in the same series, the internet gives this module a very high recommendation. If you are looking for a REAL JMS PedalMAX Throttle Enhancement product review, then this is for you! What is this product and how does it perform once installed? Let’s take an in-depth look and find out:
The manufacturer is a company called JMS and is based out of Lucedale, MS. Their products are available from several online retailers and tuning shops, as well as directly from their website at jmschip.com.
The JMS Pedalmax module connects to the vehicle via the factory throttle connector on the drivers side of the vehicle. It is available for several vehicles and manufacturers. The manufacturer claims immediate improvement in throttle response with this product.
The cost at the time of this review from the JMS website for the JMS Pedalmax product was $289 USD. This price is a little higher than most other products we previously tested, but we are eager to see if this module is actually worth the cost and performs as well as many people say. Let’s find out!
The module comes in a sturdy, custom black rubbery – plastic case which is pretty solid and visually impressive. The Pedalmax module itself has only one gold-plated DB25 connector which makes installation simple. The wiring harness plugs into the factory throttle connection at the drivers foot area of the vehicle:
Also included is a variable power dial and a power decreasing plug to lower the gains if they are too high:
The above dial can be used to adjust the gains on demand, which is a nice feature.
This plug consists of two resistors which connect to the harness to limit the gains of the Pedalmax should it be too strong. It looks nice so far, but does it live up to the claims? Let’s find out.
We purchased a Pedalmax throttle enhancement device for our test vehicle and examined the inside of the module:
This complexity of a circuit board is rare in most performance products, and we were impressed by this. Some of the components include: three integrated circuits, three leds, several resistors, diodes and smt transistors. The circuit is built around a PIC18F25K22, which is a microchip device capable of containing a 32K program size. Since the module does not require maps to be stored, it only needs to connect to the throttle harness, so it is possible to deliver on these claims with this hardware. The hardware looks solid. How does it perform?
So far this product looks promising. We followed the included install guide to fit it to our test vehicle under the drivers – side pedal area and connected the module to the factory wiring harness:
After starting the vehicle, the lights shown above illuminated and once put into drive, the test vehicle showed an immediate boost in throttle response – there was definitely more pickup. No error codes were set and the changes were definitely noticeable.
From our research and review, it is our opinion that the JMS Pedalmax Throttle Enhancement device works well and does deliver the results as claimed. The cost is a little high compared to other products, but it required no other modifications to the vehicle and was relatively easy to install. Our tests showed an immediate improvement on an otherwise stock vehicle. The only downside, if any, to this module is the cost and the need to tuck or tie the wiring up under the driver’s dash area of the vehicle. This device provided excellent and immediate results. If it is available for your vehicle, you definitely want to try this!!
FINAL GRADE: A
Company Communication Cost Design Operation Power Gains Safe for Vehicle Total Rating