Ford Focus Forum, Ford Focus ST Forum - View Single Post - Do You Want an ECU Tuner for the Mk III NA Focus?
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Old 04-04-2013, 03:48 PM   #84
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Quote:
Originally Posted by TCOC rel1 View Post
I am not sure, guess I could head out to a buddies shop and hook up a shrader valve, but if my butt dyno works, this thing is maxed.

under 25 F , with the engine temp sensor under 50%. I have felt the surging power effect, twice, both times on 89 octane.
Well, I am wondering... since my F350 diesel injectors have LOTS of room to go before they get into a situation where under-fuel becomes an issue. I'm guessing that the injectors on a MK3 can't be overcome by simple exhaust and intake mods, and that's all we have at this time. The injector map in the ECU maxed out? Possibly. And maybe, just maybe, you're on to something, I don't have data. Perhaps that's why nobody has a tune - because the injectors are already at their fuel delivery limits.
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