RobC

I was poking around ETKA and I noticed that the part numbers for the turbos across the various versions of the 4.0T had been updated. Previously the part number for the S6 and S8 were the same. In parentheses is the engine code. The S6 and A8 4.0T use the same turbos based on this information. These part numbers are current as of Aug 2013.

S6 (CEUC)
left:079 145 703 E
right:079 145 704 E

S8 (CGTA)
left:079 145 703 F
right:079 145 704 F

RS6 (CRDB)
left:079 145 703 K
right:079 145 704 K

A8 4.0 (CEUA)
left:079 145 703 E
right:079 145 704 E

ECS Tuning-Audi

I'd imagine that the CHRA is the same but the turbine and compressor housings probably are slightly different. This is probably to accommodate different sized engine bays, how the intake piping runs, and the route of the exhaust.

Jason

ecpChris

Hmmm, i can get s8 turbos for $3600. Wonder if anyone could support them tuning wise.
I need to look and compare injectors etc etc.

sciblades

if this is true pm me, we need to talk

ecpChris

text sent

ecpChris

Rob, do you mind sharing what EKTA you used? There are some things working on but need an exploded diagram with part numbers.
Thanks

RobC

I'm using ETKA 7.4. I can make PDFs for you if you want. Also I seem to recall the ETKA pages being available online at some of the OEM audi parts places.

beardsd

I would be very interested in seeing part numbers for the exhaust manifolds as well. I have heard there may be some differences there as well. That would also impact the performance of the turbos in use.

-Dave

RobC

Audi sells the turbo and exhaust manifold as one piece, as seen on this page:

http://www.partsbase.org/audi/audi-a...ust-manifolds/

sciblades

can you please post the cooling system for the s8 or rs7 turbos? I would prefer for the rs7