Ignition failure

[ANBR]

So here is how it all started 2 weeks ago i went to Digi-tec in Germany to put in a chip, so the first thing he did was reading the memory witch showed that one of the exhaust temp. sensor was bad. He did install the chip an told me that i would have to replace the sensor and then it should have the full boost. So went to a Audi dealer and they replaced the sensor on the Driver side. So i pick up the car but it still dident have the full boost and i notice at 3000Rpm that it had a slite jerking and again at 4000 , 2 days later i went back to Digi-Tec and wie went for a test drive with the VAG 1552 hooked to the car so he could see whats happening. We found out that on the 6 zyl. it had a #6 i guess what he told me is on this zyl. the timing is of all other zyl showed 0 wich is good. So i replaced the sparkcoil on the 6 zyl. but still had that jerking. Went back to Audi and they did the same reading of all zyl. and guess what ! now it had it on the 4 zyl. so they replaced the Sparkcoil on the 4 zyl. after that again reading of timing and then it was on the 5 zyl. At the moment nobody knows whats going on does anyone have a idee , or had something simulare.

[johneroberts]

Coil pack failure, or bad code on the chip by the sounds of it
Cheers
jr

[drjones]

Sounds like ignition amp thats not charging the coils properly resulting in a week spark that finds an alternative earth when under load hence not very clean through the rev range and worse with higher boost!

Although a pain to do try new plugs as brand new plugs dont initialy require as high a voltage to operate if it sorts it temporarily i would think its your amplifiers playing up. you should have 32,000 ish volts at the plug 25,000 would be the very min anything less, boost will blot the spark out.

[ANBR]

thanks for the answer so far

I did already change all the spark plugs but it dident help my guess at the moment must be the chip. i will talk to the tuner tomorrow and ask him if we could reload the original configuration and then see how the car runs ober bether to say the motor.

[zorroRs4]

exhaust temp. sensor was bad?? should it not go into limp mode??
any way keep us posted mate and goo luck,
Cheers.