Problem with VTEC hi-throttle engage

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09-30-2005, 03:51 PM

HMTguy

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Problem with VTEC hi-throttle engage

I'm using a Z6 block with a Y5 (vtec-e) head. Running Uberdata.

I have everything running great with my turbo, and I installed a VTEC indicator light for testing purposes.

I set my Hi-throttle engage at 100 RPM because I want VTEC on instantly if I mash the gas. (12 valve operation is not good when you want to go fast!)

VTEC only kicks on at the RPM I have it set for the low-throttle engage. So it will engage at 2500 rpm, no matter what the throttle is at.

How can I make VTEC engage right away when I mash the throttle?

09-30-2005, 03:55 PM

Sikocivic

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Join Date: Dec 2002

Posts: 362

Re: Problem with VTEC hi-throttle engage

You may not have enough oil pressure at the lower RPMs to get it to go into Vtec.

09-30-2005, 05:09 PM

HMTguy

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Re: Problem with VTEC hi-throttle engage

For some reason I don't think that's it... But I will try with VTP disabled and see how that goes.

10-01-2005, 09:24 AM

con

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Join Date: Nov 2003

Posts: 0

Re: Problem with VTEC hi-throttle engage

Quote:

Originally Posted by Sikocivic

You may not have enough oil pressure at the lower RPMs to get it to go into Vtec.

I dont think you have a oil pressure sensor hooked up, right? So the light doesn't know if vtec is working or not it just knows that the soliniod has voltage so I dought its oil presure :P

10-01-2005, 11:32 AM

Minor Threat

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Join Date: Mar 2004

Posts: 1,729

Re: Problem with VTEC hi-throttle engage

Hey Jago

I read your other post on HT. My suggestion is to bypass ECU activation completely. Just wire a switch under the gas pedal and hook it to a relay wired into a 12v circuit, and connect that to the VTEC solenoid. 100% Throttle = VTEC-E.