I’m buying a 2001 Chevy Express motorhome (7.4/4l80) that I will be turning into an off-road camping rig and plan to make the following modifications: Comp Cams Xtreme Energy 206/212, headers, cold air intake, EGR delete, aftermarket exhaust, 37” tires, 5.38 gears.

-Can you tune the ECM properly for these changes for my specific type of use (low end torque for off road/towing with some street driving)? I would also love to get a few more MPG if possible.

-Can you also reprogram the ECM for transmission changes (quicker/firmer shifts, speedo correct for tires/gears, etc)?

-I’m also interested in the ScanGaugeIII OBD2 Vehicle Monitor. Does it monitor ALL the sensors on the engine including fuel pressure and each individual injector?

Thanks
( Robert, 09/10/2023 )

Yes, we can tune your ECM to accommodate the modifications you plan on making for both the engine & transmission. The ScanGaugeIII will display the available parameters, but the fuel pressure is not monitored by the ECM so it would not give you that. I don't believe it will give you detailed injector information either.

Will I be able to further tune the ecm after I get it back? ( Payton Twiford, 08/11/2023 )

You will not be able to make any changes yourself but if there's something that needs to be changed, you can send the ECM back for a no-charge revision.

I have a 1997 K3500. What is the reason it is '98 on upwards that you guys can mess with? ( Brandon Davis, 08/03/2023 )

We no longer offer core exchange tuning for the 1996-1997 model years due to PCM availability. We will only tune these model years if you send your fully functional PCM to us.

I was wondering if you can program for no o2 sensors because I would like to change the exhaust in the future. I will be using this truck mainly for a towing. Also the speedometer is off by 10 mph and it’s running stock tires and rear axle ratio 3.73. Also I would like to save on the core so I would be sending my ecm to you approximately what is the wait time. Thanks ( Robert M Potier, 07/31/2023 )

Yes we can accomplish all of your requests. Typical turn around is 3-4 business days.