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Phoenix Switch-On-The-Fly Chip (DISCOUNTINUED) (Disabled)
Power Hungry no longer sells the Phoenix/TS chip, but if you need custom tuning we can recommend a few really good tuners that will be able to still provide tuning and support for your chip.

If you have any other questions or comments about the Phoenix/TS chip, please post it here.


 
 
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Old Wed, December 23rd, 2009, 09:10 AM
nelstone74 nelstone74 is offline
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I was looking for more info about the differences in the 87,89,91 settings.

I would guess that it has to do with timing. Are the shift points also changed usually?

Are there numbers about what a chip would do ie HP for an otherwise stock 5.8L 1996 F250 with Auto. I know that big numbers are not attainable like a diesel, is it more drivablitiy, mpg and such.
  #2  
Old Wed, December 23rd, 2009, 11:49 AM
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As you've guessed, much of the changes between the low octane and high octane programs focuses on timing. There are also differences in the fuel curves, with higher octane programs being a bit more aggressive than lower octane programs. We also break down calibrations into towing and performance type programs, with each group having their own subtle changes in fuel, timing, and shifting.

The earlier 5.8L will usually gain 18-20 HP on premium (91-93 Octane) and 12-14 HP on regular (85-87 Octane). This, of course, was also 14 years ago when the engines were newer. As the engines have aged, it's going to be tough to say what the actual gains would be but I'd imagine they're still pretty close.

With everything combined, the increase in performance and economy are usually quite noticeable. Throttle response is crisper and shifting is firmer.

Hope this helps.
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Old Wed, December 23rd, 2009, 01:06 PM
nelstone74 nelstone74 is offline
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Great thanks for the info.
 


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