In today's highly sophisticated computer systems aboard your vehicle there are parameters that literally control every single aspect of your vehicles drivetrain. They all work simultaneously to give you a nice, smooth and comfortable driving experience. But that doesn't always mean High Performance, in fact more often than not the computer design engineers will sacrifice power output and fuel economy for any number of reasons.

 

 A custom PCM tune is an absolute necessity for any performance enthusiast, especially if other performance bolt on’s and modifications have already been installed on the vehicle. We provide a service of custom writing a performance PCM tune that consists of several different steps:

 

Volumetric Efficiency Tuning:

     This allows the fueling side of the PCM to know exactly how much air is being moved through your individual engine at any given time. Doing this gives more precise fuel control equating to more power and more fuel economy.

 

Mass Air Flow Sensor Tuning:

     Your PCM reads the MAF in a Hz Frequency and is a piece of the airflow puzzle, it can be turned off in a tune and the engine will run in Speed Density mode relying solely on the O2 sensors. But in a street driven application we simply tune the MAF to provide better throttle response and drivability.

 

Ignition Timing Tuning

     The idea is to run as much ignition timing as possible without creating any detonation, known as Spark Knock or just Knock. Tuning the ignition timing tables has a drastic affect in engine power output. This setting will vary from engine to engine as well as the octane of the fuel being used.

 

DTC’s & C.O.T.

     We can turn off any Diagnostic Trouble Code that may have been triggered by a modification, including turning off downstream O2 sensors and Cat Over Temp Protection (C.O.T.) For that “Off Road” exhaust system. When the downstream O2’s read the presence of hydrocarbons it automatically assumes the Catalytic Converters are overheated and thus less efficient, the PCM take’s it upon itself to add more fuel to the engine in hopes of cooling down the exhaust/Cats.

 

Power Enrichment Tuning

      Power enrichment is used as fuel adder to create more power in higher RPM.

 

Transmission Tuning

     In Automatic transmissions we have control over every aspect of the transmission. We increase line pressure, control shift speeds @ various TPS inputs, tune for a high stall converter, TCC lockup, as well as change the rear end gear ratio & tire size. We will also turn down Torque Management. In manual transmissions we can turn off C.A.G.S. known as the “Skip Shift” feature.

 

Idle Tuning

     Idle tuning is performed if the engine has a big camshaft installed and is having difficulty idling under the factory parameters.  In other applications we can also lower the idle RPM slightly to decrease fuel consumption.

Note: not all of these specific tuning precedures will be performed unless the vehicle, or the vehicles modifications mandate such drastic PCM modification. Typically a street driven vehicle with or without performance bolt on’s can greatly benefit from VE tuning, Ignition Timing &Transmission Tuning. As is with any performance modification, the power gains will be greatly affected by the condition of the vehicles drivetrain and also by the octane & quality of the fuel being used.  PCM tuning will not fix any problems with your drivetrain. For the exception of conditions created by the PCM when a DTC is set by a modification.