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Message: <blockquote data-quote="shiroitenshi" data-source="post: 3151140" data-attributes="member: 27518">Like DIV said, VTEC usually either works, or it doesn't. I'm not sure what you mean by soft vtec sound.Sorry, but I totally forgot to ask the most basic question, arrowhead... when was the last time you changed/serviced your oil pump? If never, then it'll probably goes as follows.Your current situation, probably best if can test by swapping the green pres. sensor, testing the car again from a cold start (means you wait for engine to cool, then start it, warm it up, then drive and see if VTEC engages properly)If not, then it's time to check your oil pressure. This one a lil more expensive, and perhaps not, if you already have the oil pressure meter in your car, in which case, it's a simple matter of relocating the sensor (oil pres. sender unit) to check the pressure at the oil pres hole (green plug place). I'm not sure if the plug fit, but in my case, I conveniently used the sender unit on the VTEC hole where people usually use for external VTEC line, and blocked off one end of the T fitting with a bolt. That car is B20, but with internal VTEC passage, not external.I have experienced before, where a guy with a chipped ECU with all sensors related to vtec disabled, has a vtec that 'jumps' in and out of VTEC. Seems like his oil passages are so clogged, his oil pressure was on the low side.. or so I initially thought.Before that though time to check everything out first, tried plugged in a stock ECU, and even when the temp is warmed up, the VTEC wouldn't engage... at all... swapped temp sensor & oil pres, no go either... so finally tried plugging in an oil pres sensor from his Defi (see above), and it read about 36-38psi, below minimum for VTEC operation, cleaned solenoid and the oil passage in the head (obviously have to REMOVE the head) and it works okay again, for a while... in the end, had to change the oil pump.. no problems since.About the vtec being soft.. I don't recall his vtec being softer or whatever.. it's just that it simply lags before opening vtec, because the oil pressure was not sufficient until higher up in the rpm. Sometimes after just opening, it also jumps out of vtec.So not sure if any of this would even be related to your problem.</blockquote>

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GRA round 4 entries

GRA round 4 open for registration.....

date: 11th Nov 2007
venue: same ol place - shah alam

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