93456km is the vehicle milage, I think maf is not change since.

 

You did not mention in any of your previous posts that you replaced the Hall sensor.

Did you replace the idle/WOT switch on the air guide? Temp-II sensor?

Download my inspection guide (URL in my signature) and go through the multi-meter tests (that start on page 22) for the idle/WOT switch and Temp-II (and you might as well do the others too.)

Have your Mass-Air Sensor rebuilt. It is 99% certain that it is out of specification.

Have you checked fuel pressure at the rail?

Has the LH ECU been rebuilt yet?

Are you sure that the LH harness grounds at the back of the block are clean and tight?

 

Looks good. Did you have a bunch of items re-electroplated?

 

that engine bay looks clean, good job on the cleaning.
do you have another good running car you can swap your MAF and computers into?

 

Hello guys, I really appreciate your help my problem solved by swapping the ignition trigger module from another car, but it's strange my all cylinders were working with no miss fire,as I know trigger module just turns on and off the ignition coil how it's effecting the power without missfire. Thank u.

 

Hi guys,
After solving my engine power issue, I got another problem when I drive in the weekend, engine missfires only at high rpm, when missfires some times u heard backfire from the exhaust,it seems ignition system problem, spark plugs, spark plug wires with rotor and caps are new, both ignition trigger modules replaced used that it solves my engine power problem, still have ignition coil, it could be from ignition coil?????

 

Remind us again what year car.
Duh. This is that thread, just page 2. 87 S4.

I know you put it in the other thread, but I don't remember right now.
As a non-paying 'user', you don't get a 'signature line' that shows up in every post.

Backfires from the exhaust would seem to indicate unburned fuel, so spark would be suspect.
Did you replace the coil wires with the spark plug wires?

 

Recheck that your plug wires are going to the right cylinders. It is very easy to swap wires 5&6 or 6&7.