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Hi Bobby
Congrats on achieving those power numbers, superb results!
I also have the 3.0 Tdi Quattro but in an A5
Reading through your thread, except for the dpf delete down-pipe, are you still running the standard exhaust?? Including back boxes??
From what I've read elsewhere, the backboxes are extremely restrictive.... Is there no scope to increase flow??
2/12/15 - 3" Exhaust fitted
Well I fitted the 3" exhaust during the weekend and to be honest it looks great and sounds great. But I'm not sure I can live with it. I'm basically doing a lot of miles and I always wanted a stealth but fast car.
Here is a audio (need headphones really)
http://vidmg.photobucket.com/albums/0903/cossie_power/Audi A4/Exhaust- driveby_zpsm4boyvpj.mp4
It does look good:
As for performance well its the best I've seen with zero back pressure at 4.6k rpm and only 45mbar in the midrange.
Im sure its old age but I want my car to be silent. So I'll be fitting the standard system back which was giving me 130mbar still not so bad as the 2260 has to deal with at least 500 to 600mbar with the dpf.
In the future if I find the back pressure is too high then maybe I'll fit a active exhaust valve.
I've also now found the limit of the CP4.2 pump - I can get 97mg in the mid range with 81mg @ 4k before rail pressure becomes a issue.
Still smoke free which is great - time for another dyno i think.
Cheers
Bobby
April 2016 - Exhaust tips
I had the exhaust tips made so the bore goes over the stock back box pipe around 50mm. The tips are around 100mm so they fill the hole nicely.
End result:
April - Santa Pod 12.4 @ 111mph
Took Class J
Here are some video's:
Note this run was done with a 2.8k take off and this results in 4.5secs to 60 with a 3k take off I have seen 4.1 secs so I feel this time can be improved upon.
Also, the run was done with full weight, half tank of fuel so around 1.8 tons I would say.
Incar
Cheers
Bobby
Hi Bobby
Congrats on achieving those power numbers, superb results!
I also have the 3.0 Tdi Quattro but in an A5
Reading through your thread, except for the dpf delete down-pipe, are you still running the standard exhaust?? Including back boxes??
From what I've read elsewhere, the backboxes are extremely restrictive.... Is there no scope to increase flow??