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Originally Posted by JFERR
Steve,
I attended a PCA meeting last week at Musante Motors in Connecticut. They did a presentation on ECU flashing.
This is what I discovered:
ECO Flashing works well on Turbo cars. This is because you can increase the turbo boost. They had a 996 Turbo which indicated and increase of 75 HP on the dyno.
I asked the owner of Musante what affect flashing has on normally aspirated cars and he said mid range power will have a slight increase 5-7 HP, but overall HP does not increase.
Hope this helps.
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all true unless you've done a lot of mods to your car, particularly if it's a 2.5L. if you've done a lot of mods, it's necessary to widen the ECU parameters to take full advantage of the mods.