Use this method if you install a 5050s in IC14 and you get a MIL code 21. STEP 1 modify and install the VTEC parts as normal but stop at the installation of IC14 STEP 2 install the 5050s in the IC14 position and do not solder pin 4 of the 5050s STEP 3 on the PCB of the ECU bridge pads 2 and 4 ( do not bridge the legs of the 5050s ) STEP 4 get a 820R resistor and solder 4cm of wire to one side and solder the other end of the resistor to the emitter of Q102 ( as a 5v ref ) STEP 5 solder the other side of the wire to pin 4 of the 5050s, you might want to trim back the leg a bit so it doesn't stick out to much. and thats it, enjoy your VTEC I tested a ECU with this method on the Engine Simulator in VTEC for over 5 minuits continuously and it did not mis a beat and nothing got to hot. link to thread https://web.archive.org/web/http://forum.pgmfi.org/viewtopic.php?t=12672cheers John b16A2

Attachment:	Modify:	Size:	Date:	Who:	Comment:
5050s-VTEC007.jpg	mod	37420	27 Jan 2007 - 14:30	b16a2	link pin 2 and 4
5050s-VTEC006.jpg	mod	46044	27 Jan 2007 - 14:31	b16a2	final layout
image003.jpg	mod	2848	27 Jan 2007 - 14:32	b16a2	5050s layout