Vn ecm change

[Burning rubber]

VN ECU is just as tunable minus some features like sequential injection.

22:1 (why such a specific ratio) will just grenade the engine and next to zero VRs had an Ecotec.

I thought the VR had a plug to plug into in the car while the VN has to have some computer intense **** done to change anything...
sequential injection isn’t necessary though is it? Just manafactures being fancy?
I read somewhere that running a 22:1(I think) ratio will save 33%fuel
Why grenade? Won’t it lean out and not be able to run if it’s to much? Or will it ping the **** out of the motor and the ka ******* boom? Or head temps too heigh

 

[losh1971]

It will be a whole lot easier and not to mention $100s cheaper to just remap your VN memcal than try and make the VR PCM work in the VN. VR has a PCM not ECM therefore it receives input from the trans to work properly.

 

[Burning rubber]

It will be a whole lot easier and not to mention $100s cheaper to just remap your VN memcal than try and make the VR PCM work in the VN. VR has a PCM not ECM therefore it receives input from the trans to work properly.

 

[losh1971]

?????

 

[Burning rubber]

?????

!!!!!!

i dont know tbh

 

[losh1971]

So you have said before you have no money, yet you want to spend 100s of bucks getting a later model PCM working in your VN? I don't get it? Why not just remap your VN memcal?

 

[Immortality]

I think it's time you do some research.

As I said earlier, the only advantage of the VR pcm is that it comes with high speed comms already fitted with the OBD 2 port. From a tuning perspective the software is the same for VN and VR.

Forget ecotec pcm. That means a complete engine rewire to make it work and the only advantage is full sequential injection.

Before you consider making any tuning adjustments you have a lot to figure out and understand considering you don't even seem to understand some of the basics been bandied about in this thread.

 

[_R_J_K_]

I read somewhere that running a 22:1(I think) ratio will save 33%fuel

If all it took to save fuel was to lean out the engine heaps don't you think car manufacturers would have done that already?

 

[Immortality]

Leaning out also increases certain emissions which isn't adr and epa friendly....

Some of the V6's lean out to about 17-18:1 on lean cruise already. The other thing to remember is a lean mixture burns at a different rate to rich afr's so ignition timing advance also needs to be considered....

 

[the_boozer]

Have you ever done any efi conversion or ecu change it will cost you a lot of time. Buy a better car if you want better fuel economy the VN is what it is from your other post you were struggling to afford a wheel alignment do you check the tyre pressures daily? The way you drive it will be the biggest factor effecting fuel economy try to keep the bullshit believable will ya.