for my 955 CTT i want to know wich one is the best ECU

 

I had GIAC X tune on my 2.7T Audi. Very aggressive tune, but everything else suffered; terrible mileage, alwaus ran hot, misfires at full throttle and went thru DVs and boost hoses like high wear items. Also, the car DRANK oil....to the tune of a quart/every 1500 miles. The tune sacrifices raw, straight-line performance, at the cost of everything else.

 

That sounds like a Horrible tune!!

 

You're comparing to a completely different car that suffers from many reliability issues (I know, I had one ). There is nothing about a tune that can cause oil consumption. Same goes for DV's and hoses, as those are mechanical parts and are not controlled through software.

If your car is in poor health, of course adding more power isn't going to fix anything. But for a healthy car, a good tune will give improved performance, better fuel economy and optimized AFR's. The GIAC tune is the only option that allows true program switching and is a complete re-write of the factory ECU code. Additionally, I would have no hesitance to pit it against any other tune on the market in terms of performance.

 

Wish someone would put up all the Dyno for their ECU tune here to see what everyone's doing (Tuner).

Shout out to ViVid Racing. Just did my ECU Tune. Great service from Austin and Dan. Product is good and once you get a taste of it you want more. Dan how about another bump...LOL :-)

 

This^^^^^^^^ anyone that has had an Audi knows they are junk! I have had a GIAC tune on my GMG 997tt and its flawless! Conservative but a great tune.

 

I had an GIAC X on my 2.7tt S4 and never had any of the issues you mentioned and I put tens of thousands of miles on it. GIAC is on of the best out there, not sure why you are blaming the tune on those issues.

 

This is not true at all, Audi's are great cars. GIAC has turned their rep around they are much better now of days.