Obd2

[somersetdub 0]

Hi all, I'm just curious about why exactly people do the obd2 conversion?

I've done searches on this and there is info about people doing it and info on how to do it; but not really any info on the real advantages of it.

As far as I was aware, the mk3 inlet is more restrictive and the mk3 ecu runs a less aggressive map? So by doing an obd2 conversion, are you not actually lessening the power of your car a little?

I may be breaking an obd2 mk3 soon, hence why I'm curious

[VR6matty 0]

I think it is because the lack of isv means that the engine runs a lot better than odb1, better idle and no stalling etc and the odb2 ecu provides a bit more scope for tuning than the older ecu's, more parameters etc. I don't think many people would install odb2 without remapping to suit their application.

There may be other reasons also but this is what I understand to be the case

 

Cheers

 

Matt

[somersetdub 0]

Oh right, cheers.

It's funny, my vr has always idled nicely and is very smooth and quick. I think I may be tempting fate if I decide to convert to obd2!

[swiftkid 1]

The rewards for your efforts will be:-

 

Cylinder selective knock trimming and much faster response.

Optimum timing maintained constantly.

Better low end torque and midrange.

It will never, ever stall again or even think about stalling.

Much faster lambda.

Phased injection timing (to compensate for inlet tract length)

Better mpg and smoother response.

Much better scope for tuning.

 

taken from here