my old part number on ecm is 16263494 on 1999 454. 7.4 chevy engine in georgia boy pursuit motorhome. will your new part ecm work on this motorhome. my ecm has to be replaced. what features will i gain with this new unit. is this unit ready for plug and play. thanks ( buddy fisher, 12/09/2021 )

Yes, this would be the compatible ECM with your VIN and part #. The main improvements will be improved shifting and overall more torque to pull hills. It will be plug and play.

Hey i have a 1997 chevy k2500 7.4 manual nv4500 trans 3.73 engine bone stock with 45,678 on rebuild with a working good ecm is tunning a question if so how much $ ( Connor Blumhardt, 12/04/2021 )

Yes, we can tune your ECM. Cost would be $495.

Good morning
Background: I just recently bought a hypertech programmer for my 1999 (build date 8/98) GMC Suburban 2500 with 7.4L Vortec. I use the vehicle for family road trips and for towing a 6klb boat. I would like to get more power but better economy when towing if possible. I live in AZ and in my county there is emissions testing, so I do not want to change anything that would cause me to fail.
Questions:
1. Is my vehicle compatable?
2. I do not want to have my vehicle out of commission and risk having a ecm get lost/damaged in mail can I send my old one back for the core credit once I recieve the tuned ECM install and verified it works?
3. What HP/TQ/MPG numbers might I expect?
4. What is the process/steps/turnaround to complete
5. What parameters can be changed with your tunes?
*I do not care if the ECM is painted or not if it holds up the process I just want it to be reliable and work.

All the best
Daniel
805-660-7795
dwikto@cox.net

( Daniel Wiktorowicz, 09/15/2021 )

1. Yes, your vehicle is compatible.

2. Yes, you can pay the $100 up front core charge and be refunded when you send your original back to us.

3. Typical gains are 40-45 horsepower and 45-50 lb-ft torque

4. Once the order is placed and you have paid for a core, we will program a PCM here and ship it with a return shipping label for your core. Typical turn around is 3-4 days, sometimes quicker

5. We set all the parameters in the PCM, so you will not have a way to make adjustments on your end. The most important changes that are made have to do with spark advance, fueling, transmission shifting and torque management settings. We will set the tune up based on your modifications and requests.

Hello!

I am looking for some more information on one of your computers. I have a 2000 GMC K2500 with the 7.4 litre 454 Vortec. I am looking for a tune that disables the catalytic converters and egr valve. Also I have a throttle body spacer, cold air intake, headers and true dual 3” exhaust. Is this something you can tune for me?

Thanks!

Warren Wolverton
w-wolverton@hotmail.com ( Warren Wolverton, 07/27/2021 )

Hi Warren, that is definitely something we can tune for.

I just bought this 97 suburban 4wd with the bbc.
My problem is that my old truck was also a 97 Chevy with the 5.7 engine and it feels like the old one had more power.
This engine runs great but with the difference in fuel consumption and lack of power I’m disappointed
Will your tune help or am I missing something? ( John Retz, 07/19/2021 )

The tune will definitely wake the truck up. Not sure if you have any other issues causing low power though because it should outperform the 5.7L, especially towing.