TDI Tuning box - CRDT2 or CRDT4?

Tips

Registered User
Hi,
In anticipation of getting my new A6 3.0 TDi 272ps Quattro S-Tronic next month I had an on-line chat with some peeps from TDI Tuning about a box.

Basically it sounds like I have two options ...

CRDT2 Single Channel @ £300
or
CRDT4 SENT Multi Channel @ £650

Both claim the same power, torque and mpg increases so I'm not really clear on what I'd be getting for the extra £350.
TDI did say I'd get less turbo lag and flat spots but am I really going to notice the difference, especially given that I'm jumping from an A6 2.0 TDi manual 170ps anyway?

Any thoughts, experiences and opinions appreciated.

Thanks
 

jojo

Looking for Boost!
Staff member
Moderator
Where are you get the £650 figure from? I've just had a look on their site, the max for the CRDT4 seems to be £400? And you can get 10% off using the ASN discount code. :)

The only difference I can see is, you need to open it up and move a jumper to change the power level on the CRDT2 system, but you press buttons to swop maps on the CRDT4 system. My opinion is, save your money and buy the cheaper version, the button version looks bigger. If you was chasing power, then just get a proper remap. These tuning boxes do what it says on the tin, and keeps the cars ECU happy without triggering a TR1 code! That's what most people buy them for, whilst the car is still under manufacturers warranty.
 

Tips

Registered User
There seems to be something fishy going on ... Or not ...
I was on the www.tdi-tuning.co.uk website and followed a link to chat live with someone. I can't find that link now but assume it gets hidden when there's no one there, at 4 am in the morning.

Anyway, the person I spoke to on chat was called Ami who then e-mailed me details but had a link to www.tdi-tuning.com
https://tdi-tuning.com/car/audi/a6/...td4-sent-multi-channel-diesel-tuning-box-chip Where the price is £650.

Like you, having gone back on the .co.uk site I can only find the £339 CRDT4 item for my >2015 engine: https://www.tdi-tuning.co.uk/car_an...2015_crtd4_diesel_tuning_box_chip_P13738.html

The only thing I can pick up that's different is the CRDT4 in the link they emailed me is that it appears to be a different one that works with the digital sensors hence the 'CRDT4 SENT' name in the link vs no mention of 'SENT' on the .co.uk page.
Being new to all this I've no idea what SENT is anyway.

Not sure what I'm missing here.
I can't find any reference to 'SENT' boxes on the .co.uk site.

Think I'll just give them a call rather than using chat.
 

AndyT306

Moderator
Staff member
Moderator
Did you get one?
 

Gazwould

Registered User
Like you, having gone back on the .co.uk site I can only find the £339 CRDT4 item for my >2015 engine: https://www.tdi-tuning.co.uk/car_an...2015_crtd4_diesel_tuning_box_chip_P13738.html


It's only a single channel anyway to the fuel rail , better off with twin channel that will also raise boost pressure .

2017-03-30 06.04.19.png
 

AndyT306

Moderator
Staff member
Moderator
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