When installing a cam, the misfire timers need to be desensitized in the tune, otherwise they will constantly roll over false misfire counts. Usually a misfire will feel obvious, as a break up under load, or loss of power. We can also tell this by reviewing a datalog. Under heavy load (PE) the mixture will be rich. On a stock
What does a tune to do a car or truck? The majority of LSx & LTx (Late Model GM) vehicles can benefit from tuning, even in stock form. Using HP Tuners software, we modify many tables in the engine and transmission control modules that come together to make a big difference in power and responsiveness. Typically we modify things such
What is an f-body? The term “fbody, f-body, f body” refers to Chevrolet Camaro and Pontiac Firebirds from 1967 until 2002. This includes first through fourth generation. We offer parts and tuning for Third generation (1982–1992) and Fourth generation (1993–2002) f-bodies. Fourth generation f-bodies came with either the 3.8L V6, or the 5.7L V8 engine. The 1994-1997 f-body had an
What is a catch can? Oil catch cans prevent oil and contaminants from being consumed by your vehicle, and also prevent build up which can contribute to other issues. The catch can is plumbed into the vehicle’s PCV (positive crankcase ventilation) system. What is a PCV System? The PCV system is designed to keep the air in the crank case
What is AFM? AFM stands for Active Fuel Management, and is also referred to as Displacement on Demand. This was offered in 2007-2018 GM applications such as Silverado, Sierra, Camaro, Corvette, and more. AFM/DOD refers to the shutting off of four cylinders for alleged better fuel economy. What is DFM? DFM stands for Dynamic Fuel Management, and is also referred
A popular swap in the LS world is upgrading to a 4l80 transmission from a 4l60e or a 4l70e. Each platform will be a little different; but typically you would need to change the transmission, transmission mounts, driveshaft, and shifter assembly. The tricky part of the 4l80e swap is the wiring and ECM control. This can be done with a
How do I remove/reinstall my ECM and/or TCM? What different methods do you offer to obtain tuning? What is a security or a CASE relearn? When do I need it? What fuel octane should I run? What is a speed density tune? Why am I getting a MAF Code? What sort of AFR should I look for on my forced
Note: We strongly recommend AEM 30-0334 for our Gen IV & V (CAN) customer vehicles. Often we have customers send datalogs where the wideband clearly isn’t matching up with the narrow band sensors. This is because the voltage out from the wideband or the voltage IN to HP Tuners isn’t correct. Likely because of some floating ground situation but some
Idle Setup (Cable Driven Throttle Body) No aftermarket throttle body should be expected to work out of the box. Also, if you have a large cam and/or more displacement changes may be required of the stock throttle body. All GM vehicles with cable driven throttle bodies (not fly by wire) use what is called an IAC motor. This motor controls
Curious about how our send in mail order tuning program works? Check out our infographic below! The process is simple and straightforward. Mail in your ECM/TCM, we’ll program it and ship it back. No relearns needed!
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