[Mk2] [Turbo] benifits of rev3 ecu conversion and sensors to rev2??

[mr2barri]

whats the benifits to this changing the rev2 ecu and sensors to the rev3 and sensors? cheers

[Steve-O 2007]

you get to remove the AFM so you can run a Bov
you can turn the boost up a little more as you have bigger injectors

But if turning the boost up abouve 1bar you realy want to have a uprated Headgasket fitted

[mr2barri]

it seems myn may of already had the conversion its already running a bov n iv got a metal fensport gasket so im ok

[jimGTS]

it seems myn may of already had the conversion its already running a bov n iv got a metal fensport gasket so im ok

By running a bov he means safely blowing to atmos without the AFM issues. Ie overfueling like mad between shifts. Which you will get if still running an atmos bov with the AFM fueling.

So no, it doesn't mean you must have the conversion, as many run an atmos bov on rev1/2s as they like the sound and don't mind the issues associated with it. So if you still got the Afm, atmos bov or not, your still running rev1/2 ways of fueling. Not rev3+.

[mr2barri]

so if i decided to remove the bov instead of replumbing it to my bmic system it would then over fuel more?

[jimGTS]

Ay???

If you use the AFM for fueling, then a recirc setup is best. Doesn't matter what turbo you run, what ic setup you have, it still requires the fueling calculation from the AFM.
If you convert to map sensor based fueling (rev3+), then you can run whatever bov you like, or even no bov if you got a strong steel shafted turbo.

There is 100s of threads about the reasons why you dont want to run an atmos bov on a rev1/2 still running the AFM.

[Steve-O 2007]

so if i decided to remove the bov instead of replumbing it to my bmic system it would then over fuel more?

Is your car still standard with a Boot mount IC ?

[mr2barri]

no its got precision turbo 3431, tial 38mm wastegate,bmic,avcr,fcd,safc loads of other little bits

[slipping clutch]

it is possible for the afm to have been removed and something called a pressure vein convertor fitted (hks) which would mean it could still be running a rev 2 ecu set up?
As already mentioned there are loads of write ups regarding the pros and cons of doing the rev 1/2 to rev 3 conversion
I had mine done and it worked out really well - I have tuned the car on a budget and it suited me to do it in stages i.e. I started with the rev 3 540 injectors and ecu and am now on power fc and sard 850's - the main reason I wanted mine done was I thought the afm represented a huge great restrictor in the air inlet.
Hope this helps a bit.

[Shmed]

And I did mine to allow me to use a PFC

[Rogue]

And I did mine to allow me to use a PFC

This is the only reason I can think of why you would convert a rev 1/2 to revision 3. The rev 3 stock ECU doesn't appear to have a particularly rev 1/2 compatible map and the difference in head design, cam profile and manifold design mean the volumetric efficiency of the two is quite different.

Rather than buying a bunch of secondhand parts you'd be better putting that money towards an afternarket ECU that would be compatible with your existing ones.

[jimGTS]

This is the only reason

agree, only reason is if fitting a powerFC.

i had nothing but high rpm issues running on the stock rev3 ecu....
once pfc on and mapped, all good....

[Steve-O 2007]

no its got precision turbo 3431, tial 38mm wastegate,bmic,avcr,fcd,safc loads of other little bits

still running the stock ecu??