I am ready to pull the trigger if I continue to run 87 octane fuel. Also I have Thorley tri Y hearers on mine will that effect the tune? ( John Dohner, 03/16/2019 )

Yes, we tune for 87 octane unless a higher octane is requested.

I am considering your tune for my motorhome. I am upgrading the fuel injectors with the new Bosch III's and the plugs and wires. Later i want to install the banks PPB 49070 package on this motorhome next year. So if I have your tune done what is the turn around time sending my PCM to you? I plan on the injector and ignition work done in march. I plan on a couple of cross country trips this summer before the Banks PPB install, so, should I wait for the tune until after the Banks install or do the tune this year? Thanks ( stephen mills, 02/25/2019 )

If you send us your PCM, our turn around is usually 1-2 days. We can do the tune now with the Banks kit taken into consideration for down the road. It won't hurt anything to run like that.

Is it possible to upgrade the ECM on my 1994 Fleetwood Southwind Storm 454 TBI w/4L80E trans? Engine is in stock configuration with no upgrades. I have replaced a lot of parts as preventive maintenance though such as...

TPS
MAP Sensor
Idle air control valve
Idle air control solenoid
PCV
Purge valve
Upper/lower radiator hoses
By-pass hose
T-Stat
Distributor cap & rotor
Ignition control module
Ignition switch
Aux. fan motor
Belts
DRAC module
Aux. fan relay
Spark plug wires
Spark plugs ( Jim Floyd, 01/02/2019 )

We do not go further back than 1996 (OBD2) modules, sorry.

Following up from previous question, here is the VIN 1GDG6H1BXYJ907917 and #s off the ECM, 09384681, sev. no. 16238212. Other #s not sure what they are if theyre useful, 86DAFMM0017433PS, HDW # 16239740 ( Nick, 10/13/2018 )

For this one, I would want you to send your PCM into us to be done.

I have a uhaul topkick with the 7.4. Can you guys tune that ecm? If not can a non uhaul ecm be used (ie plugged into the current harness)? ( Nick, 10/09/2018 )

I would think that u-haul did not use their own ECM. If you can supply me with your VIN and any part #'s that are on the ECM I can do some research.