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MiniMental
05-09-2016, 01:57 PM
Good Morning chaps and chappettes,

Just a quick question really, what are the mechanical differences between the AWX and the AVF? As far as I was aware they were identical, with a different standard map to suit the AWX given the smaller clutch and flywheel/5 speed box.. Is this correct? If there's is any differences other than an ECU, what are they?

Apologies if this is yet another thread about these engines, but I can't seem to find the specific answer I'm looking for.

Kind regards
Aidan

Gazwould
05-09-2016, 02:05 PM
None , just maps and gearboxes and clutch , also starter motor , and linkage .

MiniMental
05-09-2016, 02:21 PM
Cheers Gaz, That's what I thought. I ask, because a tuner I have been talking to regarding mapping etc and differences between the two engines is telling me I can't get mine (AWX) on par with a mapped AVF, as the AWX starts with 285nm and the AVF 315nm... This is obviously theoretically ignoring the clutch issue. They state that the AWX has different injectors to the AVF and as such, isn't up to it....

Aidan

Gazwould
05-09-2016, 02:26 PM
Usually max for injectors is past Stage 2 at 230 bhp .

MiniMental
05-09-2016, 02:29 PM
Yeah that's what I had researched. Don't want to push engine that hard tbh, not yet. But I wanted to get the same torque output and power as a mapped AVF putting out say... 20-25% extra.. May be looking into a fmic as mine needs replacing next year along with all the boost pipes (getting old) and EGR/CAT mods...

Gazwould
05-09-2016, 03:05 PM
2 choices for fmic , universal ebay jobbie or dedicated expensive Darkside Developments .

MiniMental
05-09-2016, 06:44 PM
Yeah I did wonder if it's worth the extra expense to have had the parts pre picked? I assume there is some custom tubing in there from dark side I guess... Haven't decided yet. Do they really make that much difference?

Gazwould
05-09-2016, 08:16 PM
I'm sure they do - colder denser oxygenated air, not needed at Stage 1 although mine is 180 bhp , benefits for sure , but essential at Stage 2 with a BV43 .

Wahlstrom
09-01-2019, 09:31 AM
Need to add a point here regarding tuning.

There are differences in injectors.
Some come with 520cc and some with 550cc

My Audi AVF has the BA(520cc) injectors and they can’t go past 200bhp

Gazwould
10-01-2019, 07:45 AM
Good info , 30cc isn't alot but obviously essential for BV43 .

Initial logic would have AWX with 520 and AVF 550 because of the extra torque mapping.

Any non removal way to tell what one has ?

Wahlstrom
11-01-2019, 06:31 PM
Good info , 30cc isn't alot but obviously essential for BV43 .

Initial logic would have AWX with 520 and AVF 550 because of the extra torque mapping.

Any non removal way to tell what one has ?

Think tuners can see it through the ECU..

Else you have to oven and look..

Mine is the AVF and I have the 520cc

But, I’ve only seen Audi with 520cc and all Passats with 550cc