JB4 for Audi S4 B9

Johnny potts

New Member
Morning Guys,

Does anyone have any experience of running a JB4 REV 2 box on their S4 B9 or even older/other models.

really debating getting one. I don’t want a remap due to warranty etc etc. But a plug and play box with mobile controls seems the best fit for me.

Open for recommendations, horror stories or whatever to help my decision.

cheers
Johnny
 

Dippy

Registered User
Try Audizine - I have seen posts from a fair few B9 owners with a JB4.
 

nora2004

Registered User
I love them, I'm not running one in the S4 as I'm out of warranty so went with Unicorn!

However I ran one for 2 years on my Leon Cupra, stock it dynoed at 303, with the jb4 and my own Map6 I made 375hp!

Id you buy new you'll get George form BMS support if you wanted to create a custom, howe er from what I've seen on the S4 the preset maps are more than enough!
 

motty225

Registered User
I run a dtuk box on my s4 and love it, made a huge difference, obviously not as much as a map but the difference is night and day
 

BuzzW4

Registered User
I ran a DTUK until I could get a map - as other say, night and day difference. I still have it if you're interested?
 

A12RNX

Registered User
I had the JB4 and still do. I had the rev1 support is very good and the additional bump in power makes the car drive as it should. On map5 I was dyno at 441.6bhp and 517ft lbs of torque.

much better than the DTUK box as people were having lots of problems with them.

I also ran some good 1/4 miles times got as low as a 11.69 and 0-60 of 3.45 I would say go for it if you want to keep warranty.
 
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