I heard of a cheaper way to trick VTEC into engaging at preset points, rather than purchasing a aftermarket VTEC controler.

The way that I heard it (thrown at me) was to intall an MSD RPM activated control box, intalled inline with the actuator. U can then plug in different control modules that are set at different RPM settings to control VTEC engagement.


Anyone heard of such a way of doing this? Possible. Sounds right.



Juker008

 

but at what RPM would you set it to?

how would you determine that?

 

try cruising at about 50 mph turn off the car: one click back then wait a second then put it back into normal position but dont start it. floor it and see what happens...

this may sound weird but this was a neat trick for the 6 gen v6 accord. because vtec kicked in at about 3000 rpm if you do the method above then vtec would kick in at about 5000 rpms which felt pretty cool...

i just know im going to get flamed for this....

sidemarker

 

:flamer:

 

By changing out the RPM modules. They look kinda like fuses that plug into the control module. These RPM modules have preset RPM intervals printed on them. So u could have VTEC ingage at any preset RPM that u want.



Juker008

 

I don't get it.



Juker008

 

I don't know Juker...you're spending too much time in the sun. Just kidding...I think.

 

That would work to turn it on but you might also set a DTC as the ECU monitors the VTEC pressure switch. If this comes on too early the ECU would think the solenoid failed and set a code. But that could be easily handled with another switch.

The main problem is in the fuel supply and ignition timing. The high lobe zone (in VTEC) has different fuel and timing maps specifically for that lift and duration. If you activate it before the factory point the ECU will still be supply fuel and firing the plugs as if it were on the low lobes. Little to no power would be gained and could loose power.

The VAFC allows you to tune the fuel supply for this change.

 

Scalbert,

Ok so there is no better, cheaper, alternative than to use an VAFC.


Pappy,

I decided that it is pointless to spray medical into my car. better to spray into my mouth .

Juker008

 

i know how to use the control module

i was asking "how you would go about determining WHAT RPM to set it at"

 

I think sidemarker means to do that procedure while driving? Correct?

 

correct

sidemarker