what letter box is my ecu?

[xx_s4quattro_xx]

Hi i was wondering if my ecu is a A box or M box my car is a 2000 audi s4 6spd? Let me know thanks

[The_Jerbel]

A box

[xx_s4quattro_xx]

Thanks jerbel you are the man. Hey i gotta question for you i see on ebay there is a guy selling his abt ecu. I was wondering do you know how much psi that thing is boosting? And would you get the giac or the abt?

[The_Jerbel]

I am not very familiar with abt, but I would guess in the 16-18psi spike range. I would get GIAC because it's more popular, well known, and the customer service is good. Well, in all reality, I would rather set you up with a VAST K03 stage 2 chip and get your business myself

[xx_s4quattro_xx]

lol how much you selling that for?

[Tifosi]

FYI: In terms of smoothness & power, ABT/AMS K03 softwares are considered to be among the best out there by many, especially for those that are familiar with the evolution path of the B5-S4s. This was the case in back in the early days of the 2.7T S4 and is still the case today when compared with the other 3 major Audi tuners ( APR, MTM & GIAC ) with their updates and revised files. Especially if you are limited to using 91 Octane fuel in your area or often travels to areas that only has 91 Octane fuel at the stations.

See link: http://forums.audiworld.com/s4/msgs/1185070.phtml