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When I ran the SFMU/missing link setup, transition was always seemless, and perfect. Now, what I think you are describing, is that at times, when you spool up the turbo a bit, you hear it spool, and see the pressure on your boost gauge, but the car doesnt really seem to go anywhere? I have had that same issue, but only on occasion, def not all the time..I believe its a fuel issue, and also an ECU issue. Just seems like the ECU is not suppling enough fuel at first. Most of the time, when building low boost, the ECU is still in closed loop, and even though we are raising fuel pressure though the injectors, the ECU is still controlling pulse width out of the injectors, and can be "laggy" at times. I don't think there really is a way around this, it just happens becuase all the conditons are present at that specific point in time, which explains this only happening occasionally. If we could make the ECU go into open loop control at the onset of boost, then that would be a good solution. Back when my HRC FCD went bad, i ran the car without any form of fuel cut control. Transition was still seemless, and never got fuel cut until i stepped on it, and was around the 4000-4500 rpm range..I don't get why it never got fuel cut at 0 psi, but it didn't 13.5 @108 MPH-2.2 60ft(stupid FWD!) S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential fuel injection) My webpage: http://eclipsed4evr.home.comcast.net -1998 Mitsubishi Eclipse RS-T- "Toy" -1992 Plymouth Laser Turbo AWD(SOLD) -2000 Honda CR-V(daily)
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