just wanted to know what the difference is between these different types of golf

 Turbo,inlet manifold,throttle,and a few internals.

Why do you ask?

 Aum has a secondary air valve thats a tw*t

 o rite it is just that mine is a AGU and i was just wondering why there are different versions

 is the AUM the newer model mk4 golf or something

 AGU came out at the beginning and was 150bhp but wasn't DBW or had VVT and only had a K03 turbo (therefore getting remapped gives you 190-200bhp tops)

then around 2002 they brought out the AUM and AUQ.

these had DBW and VVT. both have the K03S turbo meaning remapped to 220-240bhp.

AUM - 150bhp  has 5 speed gear box
AUQ - 180bhp  has 6 speed gearbox, 312mm front brakes, 256mm rear vented brakes.

but the AGU has the larger ported head or something and *stronger* internals apparently.

a lot of AGUs get a k03s and TIP and remap it to 225bhp. rather than limiting to 200bhp.

HTH

jammy

Jammy B:

 

but the AGU has the larger ported head or something and *stronger* internals apparently.

a lot of AGUs get a k03s and TIP and remap it to 225bhp. rather than limiting to 200bhp.

 

yeah agu and arz engines have stronger internals (20mm wrist pins instead of the 19mm on aum and auq engines) you can get about 30-40 bhp more power without internal mods to the aum and auq engines

 a rite nice one boys it is clear to me know lol

 AUM came out sept 2000, i think, mine is nov 2000 and is AUM

vdubben:

Jammy B:

 

but the AGU has the larger ported head or something and *stronger* internals apparently.

a lot of AGUs get a k03s and TIP and remap it to 225bhp. rather than limiting to 200bhp.

 

yeah agu and arz engines have stronger internals (20mm wrist pins instead of the 19mm on aum and auq engines) you can get about 30-40 bhp more power without internal mods to the aum and auq engines

Just the AGU's not ARZ.....

AGU's can get the same power by adding the k03s probably more with the right injectors...

 trust me the arz has a agu bottom end with a aum head except the arz hasn't got cam adjuster on the right hand side. try get some forged con rods for it

Thought all the bottom ends were interchangeable...

BlackMagic20vt:

Thought all the bottom ends were interchangeable...

They are. I've just replaced the bottom end on my AGU for an AUM (With forged internals etc), and the two were identical. The ports for the valves were the exact same size too. I think the part people get confused is the fact the inlet manifold has larger ports, not the head.

Andy

 I have a TT bottom and AGU head with inlet and outlet.... Was trying to understand VDUBBEN.   AGU came with forged internals where as AUM ARZ and AUQ didnt.  The latter AUQ and AUM came with VVT which gives no more power but probably better efficiency probably better MPG..  ARZ came with no VVT and no Bigger port Head either...

 nice to see i started a good discussion lol