Carl mc Posted November 22, 2017 Report Share Posted November 22, 2017 hi all, quite new to tuning so please bear with me...my S15 rattle is louder after installing the plugin ecu.. Is the S15 VCT control already set up when using the S15 plugin ecu or do we have to manually set it up? if yes how do we make the adjustments for the VCT solenoid control vs rpm...thanks Quote Link to comment Share on other sites More sharing options...
Simon Posted November 22, 2017 Report Share Posted November 22, 2017 On the S15 plugin the VTC can be on one of 2 outputs either Aux 8 or on Inj 5 You will need to set each drive 1 at a time to test PWM and see which is controlling the VTC solenoid the other will then be the purge solenoid. The VTC drive is then going to need to be set as CAM switched and the conditions set to desired figures. Quote Link to comment Share on other sites More sharing options...
Carl mc Posted November 22, 2017 Author Report Share Posted November 22, 2017 thanks simon..going to try it out Quote Link to comment Share on other sites More sharing options...
Carl mc Posted November 30, 2017 Author Report Share Posted November 30, 2017 Hi again... Set the vtc control On at 1050 rpm to 5700rpm...but problem is when the rpm is around idle... the vtc turns on and off causing the car to idle badly...almost stopping the engine...any ideas on the set up if im doing it correctly... Quote Link to comment Share on other sites More sharing options...
rrob Posted December 1, 2017 Report Share Posted December 1, 2017 Add a 3rd condition that's minimum 1.5-2% TP main. Quote Link to comment Share on other sites More sharing options...
Carl mc Posted December 1, 2017 Author Report Share Posted December 1, 2017 9 hours ago, rrob said: Add a 3rd condition that's minimum 1.5-2% TP main. 2% throttle position? ...ok will try and add that condition... Quote Link to comment Share on other sites More sharing options...
Carl mc Posted December 6, 2017 Author Report Share Posted December 6, 2017 On 01/12/2017 at 8:58 AM, rrob said: Add a 3rd condition that's minimum 1.5-2% TP main. Cant do that in the cam switched...only rpm refference... Any other suggestions? Its the correct output to the vtc solenoid...but engine unstable when switched on.... Do i need to retune the car if i intend to switch the vtc on since my last tune was without the vtc activated? Quote Link to comment Share on other sites More sharing options...
Carl mc Posted December 8, 2017 Author Report Share Posted December 8, 2017 Any s15 plugin users? Quote Link to comment Share on other sites More sharing options...
AbbeyMS Posted December 8, 2017 Report Share Posted December 8, 2017 Tune will require work if you now have VTC working. Quote Link to comment Share on other sites More sharing options...
immy21 Posted December 8, 2017 Report Share Posted December 8, 2017 Yes, I'v been watching this thread, I have the same issue of cycling VTC on and off as rpm floats around VTC On/off point during cold start. Inj 5 pin (JDM Spec R), can't do 3rd condition, Link software only allows me max 2 conditions. Poncams on stock unopened engine, doesn't idle well if I switch VTC on below idle, I haven't tried to play with tune yet to smooth it with VTC on at idle.. Stock ECU conditions for VTC ON are neutral switch off, TPS voltage high enough for idle 'switch' off and 1050-5700rpm Carl mc 1 Quote Link to comment Share on other sites More sharing options...
rrob Posted December 8, 2017 Report Share Posted December 8, 2017 Can you use a virtual aux to add extra conditions? Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 8, 2017 Report Share Posted December 8, 2017 Correct, use a virtual aux (or even multiple virtual auxes) if you want more conditions. Having said that it’s more common just to switch at higher RPM - 2000 or so. Quote Link to comment Share on other sites More sharing options...
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