Why did the mountune upgrade only produce 260 when it had other mods to go with the remap? A simple remap from Collins is supposed to take it to 265 and Revo claim 270 tested on a rolling road to back it up and that’s without a performance exhaust or intercooler etc which the mountune upgrade included did it not?
The power curve on the Mountune maps are better though. There are 3rd party maps that have higher peak HP, but most of them aren't actually as quick when you race them side by side. The MR290 upgrade removed the boost limit. But it wasn't covered by the Ford warranty.
But you'll find you also need to upgrade the suspension and roll resistor because with more power the car starts to feel really..wobbly.
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