Hi Angel, I'm glad to assist you. As per checking, yes, this Diablo Sport Sprint Module actually allows for maximum power and vehicle performance by disabling the factory Active Fuel Management (AFM or also called DOD) or Dynamic Fuel Management (DFM) feature that drops cylinders and reduces power. This can also save factory settings and can be returned back to stock settings later on as well. Please click the link below to order this part today. I hope this helps. Happy shopping. https://www.carparts.com/tuner/diablo-sport/dbss1000?can=CPJE1043

Hi Oscar, I'm glad to assist you. You provided a model only. For us to carefully check and be accurate on the part you need, please provide the complete information of your vehicle (year, make, model, submodel, and engine size). The VIN would be much helpful. The tuner programmer works in conjunction with other performance parts such as a cold air intake, a free-flowing exhaust system, and others. I hope this helps for now.

Hi David, I'm glad to assist you. This tuner does not necessarily increase the horsepower of your stock engine. This tuner allows for maximum power and vehicle performance by disabling the factory Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) feature that drops cylinders and reduces power. This tuner works in conjunction with a cold air intake if you really want true horsepower gains. See product details (https://www.diablosport.com/shop/sprint-active-dynamic-fuel-management-module.html). If the engine size of your Isuzu is 4.2L. The matching cold air intake is part number A862001261. If you have the 5.3L engine. We do not have a cold air intake available, unfortunately. Grab our sale price offer and click the links below to order these 2 parts today. I hope this helps. Happy shopping. https://www.carparts.com/tuner/diablo-sport/dbss1000?can=CPJE1043 https://www.carparts.com/details/Isuzu/Ascender/Airaid/Cold_Air_Intake/2005/S/6_Cyl_4-dot-2L/A862001261.html?can=CPJE1043

Hi John, I'm glad to assist you. This Sprint Series Tuner does not deactivate the speed governor. However, this Diablo Sport Sprint Module allows for maximum power and vehicle performance by disabling the factory Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) feature that drops cylinders and reduces power. For more information about the product, click the link after this (https://www.diablosport.com/shop/sprint-active-dynamic-fuel-management-module.html). Grab our promo sale price offer and click the link below to order today. I hope this helps. Happy shopping. https://www.carparts.com/tuner/diablo-sport/dbss1000?can=CPJE1043

Hi Darren, I'm glad to help you out. Yes. This item needs to stay plugged into the OBDII port. Take advantage of the sale price and limited stocks for this item. Click this link to order this part: https://www.carparts.com/tuner/diablo-sport/dbss1000?can=CPAP3648 I hope this helps. Happy shopping.