How to find out what tunes I have?

Ferdy Mint

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I just picked up an 03 F350 cclb drw 4x4 7.3 PSD after waiting on the PO for 7 months, who was in turn waiting on his new 2022 Furd.

He mentioned that it has a 60hp tune but didn't know more. It's not a Hydra, it's canned tunes that were installed, then the tuner unplugged by the shop. That's all he knows. It does have more pep than a std 7.3 but the throttle response is too sudden for delicate manoeuvres like hooking up a trailer. It's consistently that way, so I don't suspect the accelerator pedal. I've BTDT on other 7.3s.

Is there a way to interrogate the PCM via ForScan or an Edge CTS3 and find out what tunes he had installed?
 

greenskeeper

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Are you happy with the tuning? Are you looking to change? If the latter you can order a hydra chip and install it, which will over-ride anything that was written on the PCM itself. Hydra has standard tuning and customized. I used totaldieselperformance (twildman) for my hydra on my 99, he wrote the tuning to my specifications and didn't charge extra.

You can "adjust" the TPS and IVS if it's too touchy during low throttle input.
 

Ferdy Mint

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Are you happy with the tuning? Are you looking to change? If the latter you can order a hydra chip and install it, which will over-ride anything that was written on the PCM itself. Hydra has standard tuning and customized. I used totaldieselperformance (twildman) for my hydra on my 99, he wrote the tuning to my specifications and didn't charge extra.

You can "adjust" the TPS and IVS if it's too touchy during low throttle input.
Adjust the TPS? We've replaced a couple, I didn't see an adjustment method. Must be a trick to learn here ... please explain.

The tuning is OK, a few more horses is a few more grins. The throttle touchiness is my only complaint. I wish that canned tune also modified shifting, as Gearhead tunes do on my 2000/MXV4/Rosewood 238/80 sticks. But heck, that tune came free with my new truck. I'm guessing that the only way to change would be to overwrite with Hydra.

I do plan to eventually go to bigger sticks, KC300x, pedastal delete, 4" exhaust without EBPV, Riffraff plenums and bellows, S&B intake, all the basic good stuff. But first I need to make some more money.
 

greenskeeper

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Adjust the TPS? We've replaced a couple, I didn't see an adjustment method. Must be a trick to learn here ... please explain.
You adjust when the IVS closes and what voltage the TPS shows when off idle and WOT. Sounds like your truck is seeing too much "throttle" when the IVS closes due to the voltage being too high. Or it could be really poor tuning.
 

Ferdy Mint

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Sorry to be so late but I did resolve this and forgot to post the solution.

It was the throttle pedal. I swapped in one from a parts truck and that solved the problem. On the bench the old one has an open spot just when you first push the pedal a little.

The tunes were still jumpy though, so I got a Hydra and some PHP tunes from Riffraff, which solved the jerky throttle problem. The free PHP tunes overwrote whatever tune was in my PCM. Once I get big sticks on that truck, I'll go with Gearhead or Jellibuilt.
 
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