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Old 04-06-2012, 07:19 PM   #1
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Default vtec pressure switch

ive recently purchased a list of parts for my B20B/B16A ej8, and among the goodies is a chipped p28 i ordered from Phaerable.net. included with the ecu was a single sheet of literature. one line on this sheet states that i am required to bypass the vtec pressure switch on all jdm motors. this sheet also referred me to the tech section on their website for support on the matter. the tech support on their site is helpful, but i wanted to get some opinions on the matter. im told that this can be bypassed at the ecu or in the harness. i hit the search bar and came up short. if anyone who has performed this on their own car, or for someone else give me any advice or even provide a picture i would appreciate it.
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Old 04-06-2012, 07:36 PM   #2
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Default Re: vtec pressure switch

not sure why they wouldn't have disabled it in with the chip, I had a chip from them in a P28 running a JDM obd1 b16 which has the pressure switch and I didn't have to do anything special , I am pretty sure phearable.net is mtber on here try sending him a PM for clarification, he's a good guy
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Old 04-06-2012, 07:41 PM   #3
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Default Re: vtec pressure switch

im unclear on why bypassing it works any better then unplugging it.
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Old 04-06-2012, 08:23 PM   #4
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Default Re: vtec pressure switch

Here you go...

one wire from the clip should be the VTEC pressure switch.
the other wire should be the VTEC solenoid.

solder both together. Then run wire from VTEC solenoid to where you soldered and solder that **** on there too and voila!

Click the image to open in full size.
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Old 04-07-2012, 10:10 AM   #5
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Default Re: vtec pressure switch

Thank you sir
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Old 04-09-2012, 09:33 AM   #6
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Default Re: vtec pressure switch

What if I didn't plug it in?
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Old 04-09-2012, 09:38 AM   #7
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Default Re: vtec pressure switch

Pretty sure you'd get a code. The wires have to be connected to make the ecu think its plugged in. I'm also curious to why its not just disabled
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Old 04-09-2012, 12:47 PM   #8
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Default Re: vtec pressure switch

Quote:
Originally Posted by egsleepercivic View Post
not sure why they wouldn't have disabled it in with the chip, I had a chip from them in a P28 running a JDM obd1 b16 which has the pressure switch and I didn't have to do anything special , I am pretty sure phearable.net is mtber on here try sending him a PM for clarification, he's a good guy
+1. I have Hondata and simply disabled it in the settings. Also, made it easier with the Rywire harness since they do not come with the pressure switch plug from the start. They give you a screw-in allen head block off for the vtec solenoid so it does not look like you forgot to plug something in.
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