I am interested in the Diablo Delta chip for its ability to switch on demand between 87 and 91+ octane. Does anyone know if it is available for a 2003 F350 V10 Auto?

 

As a follow-up, my ECU Code is HMT1.

 

Yes, we can program it.

 

I would assume that to switch on the fly between the 87 and the 91+ octane programs that one would need to first essentially be near empty with one octane, fillup with the new octane and then switch programs? Is there adverse impact to either the engine and/or chip operation if one switches when there is a majority of the incorrect octane in the tank? Thanks.

 

Switch on the fly requires a 3 stage chip. You can only switch between the tunes we add to the chip, not the stock tune. A Delta chip always includes the stock tune, it essentially turns the chip off.

If you get a 2 stage chip, you have to turn off the ignition to switch between stock (87 octane) and the performance tune (premium). You need a completely full tank of premium to use the premium tune. The stock tune is your current tune so any octane works with it.

If you run the premium performance tune without a full tank of premium you'll get engine ping. You'll hear it ping. Eventually engine damage will occur if you run the premium performance tune lower octane.

 

Thanks Ken. Regarding the 3 stage chip, I am still confused a little by your statement "You can only switch between the tunes we add to the chip, not the stock tune. A Delta chip always includes the stock tune, it essentially turns the chip off. "

When I read the www.motorhaven.com website, it states "Standard switch that lets you switch between stock and two performance programs. "

On the 2 stage chip, am I correct in understanding that by turning the ignition off, that it always reverts to the standard chip?

Thanks.

 

Switch:

1. Stock
2. Performance tune
3. Optional 2nd performance tune

You can switch between 2-3 on the fly. If you don't buy 3, there isn't anything to switch to on the fly. To switch between 1 and 2 you must turn off the ignition.

 

Thanks

 

Hi Ken. Two more question before I order.

Though the 87 octane program only offers the tranny shifting improvements, I am interested in purchasing the 87 octane program in addition to the premium tune and on the 3 stage chip as there will be times, when I won't require the performance improvement of the premium tune, but could benifit from having better shifting when running on 87 octane fuel. On the parts ordering page, it states that for the 87 octane program, I need to fill out a custom order form, but I don't see anywhere on the custom order form, how to select the 87 octane program.

In addition, can the premium tune run on 91 octane or does it require 93+?

Thanks

 

If its just an 87 octane program, get the 3 stage chip, you won't need to fill out the custom form. The premium tune will work with 91 octane, though it will be a little sensitive to gas quality (the paperwork will have recommended brands).

 

Thanks Ken. Do I order by contacting you via email or do I go to the Parts Shop or ...?

 

BTW, my ECU code is HMT1.

 

HMT has been an extremely trouble free code family (unlike the AEO V10 family). Zero returns or reburns.

You can use the parts shop or call toll free at 1-877-399-6417.

 

Ken, not sure if you saw my earlier question, but do you order through you or do I go to the Parts Shop or...

 

Ken, my bad. Please disregard my question. Just read your response in full:-( Will call as you suggest. Thanks.