ECU - closed loop / open loop

[Gelf]

Im been doing some testing using an accelerometer at WOT, ive seen reductions in bhp and torgue, mainly because the ecu's cutting boost.

Im using the smallest jets ive got 0.4 (manifold) and 0.5 (pre turbo) triggering at about 14 psi. Ive tested both jets individually or both together now with similar results.

When the throttle is at WOT in open loop, the ecu ignores all the input from sensors, why does it cut boost ? The ecu wont know the air is cooler and make adjustments, but the air should be denser, so make more power. I didnt expect much of an increase at this stage, but not a reduction.

Im thinkin i may need to move the jets further back from the throttle plate and the turbo for better mixing. (See gallery)

I have an issue with my generic remap at the moment, which seems to make maximum boost and so maximum torgue and power at 3/4 throttle, and feels very flat after that point. Dont get me wrong, the car has been Dyno'd without any issues, the AFR was said to be fine, bhp is up from 190 to 230 at WOT.

I intend to prove this with the accelerometer, by sticking shims under the pedal to reduce pedal travel and comparing the results. Its a fly by wire throttle by the way (no cable).

With a higher flowing exhaust, the K04 turbo can push to 260 bhp on this car, without WI.

Will the ecu learn not retard the ignition and not richen the fuel in closed loop mode when boosting at partial (3/4) throttle, with continued WI use and with Dyno tuning required to adjust the maps for WOT :?: Which i have booked for the near future.

Richard, can you turn the water pressure switches to far clockwise, or will the pumps just remain on constantly at 10 bar :?: