Switchable V4 Mode on a LQ4?
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Launching!
Joined: Jun 2011
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Switchable V4 Mode on a LQ4? i've been driving my Dad's NBS Silverado all this week and it just now hit me... i put a LQ4/4L80e in my DD Chevelle! is it possible to get a switchable v4 mode in my swap vehicle? if so what would need to be done. i was thinking a 2 way switch would be nice.
when in position 1 then full time 8 cylinder mode, when in position two the pcm can decide to go into v4 mode if it has all the right parameters.
or a simple 4 cylinder / 8 cylinder switch (i can make a build a small micro controller for the setup if needed)
have any of you guys gone this route? i would really only use v4 on my late night commutes from school back to home (2 hours without traffic). go 65 and switch into v4 mode all the way home.
when in position 1 then full time 8 cylinder mode, when in position two the pcm can decide to go into v4 mode if it has all the right parameters.
or a simple 4 cylinder / 8 cylinder switch (i can make a build a small micro controller for the setup if needed)
have any of you guys gone this route? i would really only use v4 on my late night commutes from school back to home (2 hours without traffic). go 65 and switch into v4 mode all the way home.
I have actually been wondering the same thing for a few months . I would like to build my daughter a camaro for her first car , and would like to go LS for the power . Having said that , My wife is afraid I am going to be turning our daughter loose with too much power at the age of 16 . I was thinking more like having it locked into v4 when she is driving around town , and be able to unlock it whenever I want . Hopefully that would be good enough to keep my wife happy and when my daughter proves herself she can have it unlocked all the time .
The LQ4 is a Gen III block which does not have provisions for displacement on demand / active fuel management. You might be able to do something like this with a Gen IV engine, but there is no "V4" mode for a Gen III.
OK , but can the system be hacked to allow a person to use it to limit the amount of power available , kinda like a limiter ? Also , it sounds like the cam is a very important part of the v8/v4 setup from what little I have read on them . Is it still possible to upgrade cam , lifters , and springs ?
OK , but can the system be hacked to allow a person to use it to limit the amount of power available , kinda like a limiter ? Also , it sounds like the cam is a very important part of the v8/v4 setup from what little I have read on them . Is it still possible to upgrade cam , lifters , and springs ?
TECH Fanatic
Joined: Jul 2005
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From: Beebe, Arkansas
OK , but can the system be hacked to allow a person to use it to limit the amount of power available , kinda like a limiter ? Also , it sounds like the cam is a very important part of the v8/v4 setup from what little I have read on them . Is it still possible to upgrade cam , lifters , and springs ?
The AFM limits the amount of lift of aftermarket cams. So you have to watch max lift. Its the AFM lifts and tray under the cover that really important. The cam is designed to work with those pieces.
Last edited by Bo185; Sep 27, 2012 at 04:00 PM.
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Verdad Gallardo TECH Fanatic
Joined: Jul 2005
Posts: 1,685
Likes: 7
From: Beebe, Arkansas
Why do that when one can simply set RPM limits and speed limits easy enough in the computer. Those can be set to what ever 60mph or even 80mph. Then leave the stock tune were it is for the most part or even make it more invasive.
