reef2k wrote:Hi guys,
many thanks for your replies,its much appreciated, but my original question was if the car will run ok without the fap in line. based on the info you've given me, im happy to do so, but will the ecu sense this and will i need to replace the ecu as ive read this may be the case. any definitive answers please !! the car is in limp mode at the moment, so is'nt drivable. regards Nick
Yes it will run without the FAP. The ECU will not know that the FAP is not present if the pressures across the FAP chamber are within the correct range. There is collectively some doubt about what that is, the differential pressure has to be close to zero but maybe not zero, possibly if it is zero the ECU will "know" that there is no FAP filter and raise an error.
Anyway it should be possible to fool the ECU by stuffing some coarse steel mesh into the FAP chamber to produce a small amount of differential pressure if required.
This may require a degree of experimentation and this is where your problems start.
It seems to me that you don't know the state of the sensor that monitor the FAP, without knowing that this is good and and that the pipes are on the right way around for sure and without access to a Lexia you have no way of really knowing of what is causing any errors that you may see.
Don't believe that FAP / EOLYS errors put the engine into Limp mode except possibly a blocked FAP.
So if the ECU is in Limp mode then you may have other problems.
The car is quite drivable in Limp mode just lacks any performance above about 2500 rpm.
Cachaciero