Dual Exit and Diffuser

InvincibleA3

Registered User
Hi All

need someone to confirm whether i can do a dual exit on my Audi A4 B9 2.0 tdi.

i wanted to facelift it with the dual exit on the newer shape and i have the parts but i ran into a problem.

the oval tips doesnt fit on the opposite side as there is a black box , anyone know what this is ?

how do people get round it ?
 

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InvincibleA3

Registered User
Going to take a guess and suggest the black box is the control ECU for the TDI aftertreatment system.

thanks for confirming , make sense as the ad blue is also directly above it.

Ive got a diffuser and the chrome
Strip waiting for someone who has a dual exit already or a TFSI LOL
 

jasa004

Registered User
thanks for confirming , make sense as the ad blue is also directly above it.

Ive got a diffuser and the chrome
Strip waiting for someone who has a dual exit already or a TFSI LOL
I've seen a lot of people do a fake 2nd exhaust because of the adblue tank and other obstacles... Planing of doing the same with either a B9.5 rear or a B9 normal twin bumper.
 

InvincibleA3

Registered User
I've seen a lot of people do a fake 2nd exhaust because of the adblue tank and other obstacles... Planing of doing the same with either a B9.5 rear or a B9 normal twin bumper.
But you would have to get the same exhaust as the other side.

any guidance on it at all ?
 

Big Mac

New Member
Where abouts are people getting decent rear diffusers? Can get all sorts for my old a5 and cant rrwlly find any decent ones for the a4
 
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