Aero mods

G

Grahamat

Member
Can anyone plese tell me if the 1.2 3L aero parts are still available anywhere or if anyone makes pattern parts?
i’m looking to improve the efficiency of my 1.4 TDI 75 mainly for motorway use.
i have an 85 mile each way commute and even a 10% improvement will save me a small fortune!
I’m also looking to get a mild remap and a 6 speed gearbox with the overdrive 6th. Plus pepperpot alloys with thinner, low roll resistance tyres. I’ve already removed the rear seats and false floor.
Any help or advice would be most gratefully welcomed.
 
165/65R15 fitted to 5Jx15 ET28 steel rims would help reduce drag.

They should still be available to order through an Audi parts department, although they are about £73 each.

Notice that the OEM part numbers for the 5Jx15 ET28 steel rims and the 5.5x15 ET34 steel rims are almost the same, ie. 8Z0601027A for the 5Jx15 ET28 steel rims, and 8Z0601027 for the 5.5Jx15 ET34 steel rims.

The hubcaps are the same for either rim.

1613875294006.png


28Z0601027steel rim5,5JX15H2 ET34
5/100
Model data: PR-C3V
8Z0601027 03Crally black
Period: 0400 - 0805
38Z0601027Asteel rim5 JX15H2 ET28
5/100
Model data: PR-CK0
8Z0601027A 03Crally black
Period: 0400 - 0805

58Z0601147Ahub cap
8Z0601147A Z17avus silver
for rim:		8Z0 601 027
(03C)
8Z0 601 027 A
(03C)
Period: 0400 - 0805
 
Last edited:
Grahamat said:
Can anyone plese tell me if the 1.2 3L aero parts are still available anywhere or if anyone makes pattern parts?
i’m looking to improve the efficiency of my 1.4 TDI 75 mainly for motorway use.
i have an 85 mile each way commute and even a 10% improvement will save me a small fortune!
I’m also looking to get a mild remap and a 6 speed gearbox with the overdrive 6th. Plus pepperpot alloys with thinner, low roll resistance tyres. I’ve already removed the rear seats and false floor.
Any help or advice would be most gratefully welcomed.
Click to expand...
Hi Grahamat,
Crewi Audi do most parts do a search on google (a2oc aero parts) should locate items.
Hth
Keith
 
Drawing from my recent postings here:

Strangely, on my car (remapped ATL), I’m not seeing much, if any, consumption improvement with the six speed over what other ATL owners are reporting with the standard box. However it does make the car very refined and relaxed as all the gears are longer (PTW box) so it’s worth it for that reason, but don’t expect any contribution back towards the cost from fuel savings.

Unfortunately I never got to drive the car with the standard box so I have nothing to compare with, but the tank average according to DIS (which has yet to be checked with the calculation at the pump) is around 52/53mpg on a mix of local and longer runs around here (blackdown hills, I’m sure if I lived over the border in Somerset it’d probably be around 55mpg average for the same usage).

The aero mode parts still available from Audi are the wheel arch winglets and central subframe spoiler, however the transmission tunnel cover hasn’t been available for a long time and is impossible to find now. Has anyone come up with a homemade replacement?

You’ll also find my thread on the lower grille block I posted recently, I understand there could be a gain to be had there, but you’d need to leave the inter cooler grille open.

One other option to consider is a block heater if you have access to power where you park your car - the diesels are very inefficient until warmed up. I have this on my car but as it’s currently on loan to a family member I've not had a chance to use it yet.
 
carlston said:
165/65R15 fitted to 5Jx15 ET28 steel rims would help reduce drag.
Click to expand...

I found changing standard 16" SE alloys for standard 15" alloys gave me a 10% improvement in economy, which I think was mostly down to the reduced rotational weight, so less wasted energy with acceleration and braking. Narrower tyres should help too.
 
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