..1.
External wastegate not doing what it should (staying closed) and
(more importantly)2.
Throttle fuel enrichment playing up bigtime! Throttle enrichment.
.Basically, giving the throttle a WOT blip from idle should cause an almost instant increase in engine revs.
However mine is not quite doing this. Upon flooring the throttle the ECU does not seem to enrich the mixture quick enough to prevent it going lean and therefore causes the revs to bog down a few rpms before picking back up again. Going on and off the throttle at any revs seems to give the same issue and if you was to 'pump' the throttle pedal a couple of times the issue would amplify due to it not having recovered from the first 'pump'. This was never an issue the last time it was mapped and i am using the same fuel system, MAP sensor, TB and TPS. Obv Ryan played with all the settings he could think of, we played with fuel pressure, TPS sensitivity, throttle enrichment etc but no joy.
We also tested the impedance of the injectors to check they are low and indeed they are. Not sure if this is related but I did make a slight mistake with the wiring of the 1zz cops, i wired them in back to front
(#4 in #1 and #3 in #2) and the same with the injectors, fixing this minor issue did not resolve the enrichment issue and the car ran exactly the same as before; However after doing this, for some reason the base ignition timing then became out by 360 deg and we had to set the cam trigger offset to -360' to get the crank timing mark flashing back at 10' on the cam cover.Ryan.g and myself cannot think why this is happening as everything is working correctly sensor and mechanical wise, It almost seems like the ecu is just responding too slowly to the throttle position change and not adding the fuel soon enough to compensate!
The second issue, Wastegate.
. It is a 44mm Tial MV-R plumbed into a Profec-B controller.
Setup is as follows.
.. Com
(solenoid) to top MV-R portNO
(solenoid) to Side MV-R port + 'Tee' off to vacuum source which i got from my intake manifold. Spring is a 1.2 bar and its not opening at all! The boost will spike and hit map cut.
Can anyone help with any of these issues? Beers for whichever individual finds a solution!!
Thanks
Ryan
But then they cant change the phase linearization output on the PWM like on Proper ecu's to control the Valves properly when in external setups as pressurising the normally closed port doesn't work on cars running big boost!