Nistune Forums

Okie dokie, i'll let you know how i go

Just trying to give some feedback using a voltage reg to try and eliminate the TP drop issue with the factory MAP sensor disconnected.

Finally going to get around to fitting the voltage regulator this weekend.

Matt, What parameters do you want me to log?

Ok, great!

Thanks for your help. Once i have the voltage regulator installed I'll do some logging and let you know.

Okay that fuel map is strange... it is very 'pointy' which seems to indicate the tuner had to add a crap load of fuel in top end. I am suspecting you have fuel pressure issues which are being masked. Please check fuel pressure on full boost as you may have a lazy fuel pump VCT is operating perfectl...

The VCT is controlled based on: Coolant temperature 70-119 degC TP (load) from 56 (TP index = TP/256) RPM until 5400rpm and then it will cut (and then recover below 5400rpm) Speed > 0 km/h You are right, adjusting K constant will affect the positioning of TP and where the VCT is enabled after idle ...

I took some logs, and it turns out VCT is activating, but the problem is, not when it should be. As i understand, VCT activates just above idle when requisite parameters are met, then switches off at the set rpm. After going through the logs i noticed VCT would activate at varying RPM, Speed and thr...

Im definately getting a speed signal (Speedometer in consult view is working). Tried dropping the VCT min temp to 0, and putted up the street and VCT would not activate. Does the ECU need to see the neutral switch on/off? or just off and speed input?

I was testing with a fellow Stagea owner, Who could activate VCT by depressing the clutch, putting it in gear, and blipping the throttle, VCT would illuminate in Consult View. I could not replicate this, and thought it might have had something to do with the neutral switch not being connected when i...

Ok, so just plugging it in won't work? Feeding the input 5v will though? Next issue i have come across is my VCT doesn't work. I can activate it via active testing, but it won't activate in gear/clutch in/rev. I went to unplug my neutral switch to test it disconnected and it was already disconnected...

Matt, i've found my map sensor and reconnected it. Does the MAP Sensor/ Boost Pressure Sensor flag need to be reactivated? or does it just need a physical connection?

Actually, i have a LM2596 step down voltage regulator here that i can test

Hmm, interesting stuff.

Could i run a resistor circuit to the sensor line on the MAP sensor so that it sees 2.7v constantly? will that fix any issues? or is still just a bandaid at this stage?

Made 266kw on 98 @18psi, and 302kw e85 @ 19psi.

Matt, Clint mentioned there was a bit of an issue with the MAP sensor? do i need to have one plugged in? what happens if its not?

Im assuming i go by the TIM value under Resize Injectors? Which states 314.

I moved the ground for the coil pack loom and cleared the DTCs and so far it hasn't come back, so hopefully that has sorted it. They are very similar to Yaris coils, but ill see how they behave on the dyno.