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MAF-EGTs and spark plugs were changed by new ones....fuel trim and EGT fault codes were all been cleared. The vehicle seems to operate better than before as well as less fuel consumption. But we have a new problem.....when the engine is on boost about 5000rpm, It sometimes feels sluggish and cuts po...

neckarsulm wrote:you can replace just the faulty one (unlike turbos)

Hi,

One of my friend will come from Germany this month. I will order the EGT repair kit and MAF. As he will bring the parts, I will ask him to get another things....for example: Set of spark plugs? Anything else?

Amar wrote:

JJ-RS4 wrote: Those things are really expensive

Welcome to RS ownership.

neckarsulm wrote:Definitely EGTs, a fault with those will reduce boost
Lambda faults don't tend to reduce power in the short term

Thanks for the info. Do I need to replace both of them.....It seems that one of it is faulty??

Those things are really expensive

I will try to change them as soon as possible.

I have no clue ıf lambda sensors have been changed or not...

There are too many fault codes that we have detected. 16524 Oxygen Sensor B1 S2 P0140-35-10- No activity-ıntermittent 17861 - Exhaust Gas Temp Sensor 1 (G235) P1453-35-10- Open or Short to plus- intermittent 17521 -Oxygen Sensor; B1 S1 P1113-35-10 -İnternal resşstance too high- intermittent 17547 Fu...

I just bought a 2001 RS4 and It did not feel faster than my E36 3.2 M3 so I took it to the dyno. It made only 352hp and 449nm. :shock: The car has remap and exhaust with decat. It has 228000km. What are the possible causes of lack of power? I was expecting something around 400hp. The timing belt ser...