The Tune by SVC

for any of the truck tunes you can only load one tune to the truck at a time.

This is ford, not VW / Audi where you can load 5 tunes and pick at will.

Come on Huck, Raptor has 3 tunes: Stock, Off-Road, & Tow/Haul Ass tunes. And there's that moody bitch, Jill Descent....

Ok, so I have 87, 89 and 93 gas available in my area. This tune is "tuned" to 91. If I plan to run 87 consistently, I should adjust the global spark to -4.

Does that mean that if I plan to run 93 consistently, I should adjust to +2? What effect would that have? If I want to tun 89, should I do -2? Or does the tune automatically take care of +/- 2 adjustments?

ZBoater if you are talking about An SVC tune call them for advice about the Global spark adj to be safe. Sorry if you have mentioned it but how is the SVC tune?

WRCRaptor said:

ZBoater if you are talking about An SVC tune call them for advice about the Global spark adj to be safe. Sorry if you have mentioned it but how is the SVC tune?

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It's good. I like it.

http://www.fordraptorforum.com/f24/tune-svc-35083/index21.html#post715990

I'm hoping the SVC guys can respond to my question here so everyone else running the tune can see the reply.

ZBoater, you can run fuel with a higher octane rating than the tune but if you run fuel with a lower octane rating than the tune you run the risk of detonation (ping). Detonation is like a ticking time bomb, to much for to long and pop goes the weasel. As far as the adjustment in the SVC tune, my guess would be it is to fine tune for the octane specified by the tune

pat247 said:

...As far as the adjustment in the SVC tune, my guess would be it is to fine tune for the octane specified by the tune

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That's just it, the only adjustment you can do on this tune is the global spark. It's not like other tunes where you pick an octane. So I just want to confirm the correct global spark settings given the different octanes.

ZBoater said:

Ok, so I have 87, 89 and 93 gas available in my area. This tune is "tuned" to 91. If I plan to run 87 consistently, I should adjust the global spark to -4.

Does that mean that if I plan to run 93 consistently, I should adjust to +2? What effect would that have? If I want to tun 89, should I do -2? Or does the tune automatically take care of +/- 2 adjustments?

Click to expand...

With regards to the 87 question you are correct, set timing to -4. If you decide 89 is the way you want to go right off the bat then -2. the tune is set for 91 octane but will automatically adjust for 93 octane. on my personal truck I run 89 for daily driving and then 91 before we go out to test and run the truck hard therefore i leave my timing at -2 all times since running a higher octane then what it is set for is no issue.

-Jeff

Awesome. So in my case I don't need to do any adjustment since I'm running 93.

Depending on the mpgs I get I might try 87, at which point I'll adjust the global spark to -4. But for now I'll just let it be.

Thanks!

Where's the PCM located


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