VTEC Point


EK9dan

EK9dan

B18C-R EK9
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Joined
Sep 23, 2008
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Hi again guys and girls!

Another little, "what i would call an issue" ...........

When i bought my car very recently was a fresh import so information on it was a bit poor......

Happened to notice the vtec point was @ 6100RPM, when only i researched lata on that its supposed to be 5700RPM on the B16B in the EK9.

This isnt a huge problem although i really want to bring it back down to at least the default setting of 5700RPM.

As far as im aware the car has no Vtec controller... I can only assume it once did unless someone knows another way this could have been lowered?

The reason why its an issue for me is that if i do a slight early gear change when i dont wana absolutely rag it to the limiter im off vtec in the next gear, and 2nd to 3rd can get quite annoying..... especially up hills etc..... Not to mention good pull offs in 1st gear, very hard to get that vtec pull off on the quarter mile runs....

Would it be safe to just buy a vtec controller, get it fitted and just simply lower it back to 5700RPM?

What do you guys advise?

thanks
 
I think your car is running like any ek9 running on a stock ek9 ecu, keep in mind the gauge cluster is NOT accurate, when I had mine, vtec entered at 6000 - 6100 RPM.
 
thats a good point, but when i had it on the rollers you could see by the graph it kicked in at 6100RPM too? And the guy that done the rolling road for me also said its strange why it comes in higher. He reckoned it had been played with at some point??

thanks for the reply.
 
find the ECU and open it up and see if anything has been modified.
 
RagingAngel said:
find the ECU and open it up and see if anything has been modified.
Click to expand...

Where is the ECU located? Also once opened how will i be able to tell if or whats been modified?

Sorry, not so sure what im supposed to be looking for?
 
ECU will be located in the passenger side kick well. Take off the plastic cover and you'll see it. If you unplug it and remove the cover you will see if its been chipped.
 
Its seems to be mine is pretty normal in that case.

Well here is a couple of snap shots of the inside of the ECU. Im not really sure what im looking for/how to tell if its chipped or what so maybe someone can make something of this?

EK9ECU001.jpg


EK9ECU002.jpg
 
it is untouched.... it would be the big "black" square that would have shown traces of being removed or socketed
 
RagingAngel said:
it is untouched.... it would be the big "black" square that would have shown traces of being removed or socketed
Click to expand...


your replies are much appricated.

Thanks again.......

I wouldnt mind eventually getting the vtec controller with an ECU to tune in... Only a bit lower as it would make driving it that tad bit more to my liking.......
 
vtec engagement point should be tuned on the dyno.

a properly tuned Bseries vtec should only be audible and no surge should be detected like it is stock.
 
Ahh yes ive read through a few threads and came across that. I will keep the Vtec point in unil i have the suitable ECU to Fine tune it in...

Also i wasnt aware that you shouldnt be feeling the Vtec? I have to admit i do like the way the stock vtec kicks in, saying that i havent experienced it any other way.......

So the power curve should just keep climbing at the same steady pace up through the rev range even when the vtec kicks in? As at the moment according to the recent dyno result i get a 30HP sudden gain from 6100-6500RPM...... thats obviously when the vtec engages........ So it should be more gradual right?

Is there any particular reason for this?
 
EK9dan said:
Is there any particular reason for this?
Click to expand...

Doug MacMillan of Hondata fame is willing to put his name on the line and has by his own accord, received reliable information from the HONDA marketing side that vtec was deliberately tuned to produce a "boost" feeling so the car would feel faster to the average layman.

However, a smooth constant pull from a well tuned vtec motor is faster because it produces more power in the area that dips right before the stock vtec engagement point.
 
agreed, my VTEC is at 5.5k now after a remap. the VTEC is smooth, although you do feel increase in acceleration it is nothing like stock, with the "kick".

power delivery is nice and smooth, and its true about the Noise...instant change in noise.
 
Vtec kicking in later than usual might have something to do with oil pressure. Its normal and it may range between 300rpms. Get it serviced and use OEM or HAMP oil filter.
 
Well thanks for everyones input on this....

@jugbugs, thanks mate, i will do this and get it services in the next month or so.......
 
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