Quote:
Originally Posted by backpacker3
I'll clarify my other post my point was that engines can use the same tune if there is room for adjustment in the tune somewhat like the OEM tune. That's how some existing flash tuners work, granted I know that some have custom tunes made before you get the tuning device but there are flash tuners that use what you were calling "canned tunes". Even though you don't get the maximum effect out of those devices there are some gains.
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Yes, your correct in most cases a 'canned' tune uploaded from a flash tuner is better than the OEM tune. I have personally had 'canned' tunes (both piggyback chips and flash tunes) that did not improve the performance or the economy of the vehicle. Fortunately they were not my first experiences nor where they anything but a couple of oddball occurrences and just having the device meant I could get a useful tune in the end.
Don't expect double digit percentage gains from a canned tune, that would mean that the OEM programmers really F'd up and left a lot of potential behind.
Also lots old school "gross" techniques won't work - a good tune will involve looking at all the maps and changing the topography of them, not just elevating all the points. The old days of "rotating the distributor in the chip" won't work.