2006 Leon TDi (105) Industion Kit Issue!? HELP!!
Discussion
Hi guys!!!.... 1st post in this area!!
A mate has a 2006 Leon TDi (105). We have fitted an induction kit to it and a tuning box... was running sweet as a nut, but, after 4 days/200 miles the engine management light came on and it started "hunting" and juddering on light throttle, ie, steady constant speed... fine on normal/hard accelaration, no "limp" mode etc....
Now, when fitting the induction kit, there was an air pipe connected to the airbox, this was disconected and put out of the way?!... but if it had been the tuning box or the air pipe, then I would have thought that it would have had the management light on as soon as they were fitted and the engine switched on rather than 4 days later?...
He obviously does not want to have it plugged in as that will cost £80 odd at the main dealer?
Any ideas or advice on what this might be will be greatly appreciated!
Cheers
Reedy
A mate has a 2006 Leon TDi (105). We have fitted an induction kit to it and a tuning box... was running sweet as a nut, but, after 4 days/200 miles the engine management light came on and it started "hunting" and juddering on light throttle, ie, steady constant speed... fine on normal/hard accelaration, no "limp" mode etc....
Now, when fitting the induction kit, there was an air pipe connected to the airbox, this was disconected and put out of the way?!... but if it had been the tuning box or the air pipe, then I would have thought that it would have had the management light on as soon as they were fitted and the engine switched on rather than 4 days later?...
He obviously does not want to have it plugged in as that will cost £80 odd at the main dealer?
Any ideas or advice on what this might be will be greatly appreciated!
Cheers
Reedy
Edited by Reedy156 on Wednesday 24th March 14:47
The pipe that you disconnected i think is the breather pipe. Normally it just attatches to the airbox and draws filtered air. Its possible that when it was pushed out of the way it may have sucked something up which is either a. blocking it, or b. now a foreign body and is in the system. Not a good thing It could also be causing a reading error as it may have a different air pressure now and is causing the engine to run badly. That said, the pipe you are talking about i think is not the problem.
Where did you get the tuning box? Is it an 'internet special', piggyback unit which fits onto the ecu? This i think is the source of the problem. Its potentially corrupted and creating a checksum error on the ecu. This will send the car into 'limp mode' and will make the car feel weak and unwilling to perform.
The first thing you should do is remove the tuning box and the induction kit to get the car back to standard. Then disconnect the battery for 90 seconds. This will reset the ecu and all parameters should be back to normal (and any warning lights will go out). Disconnecting the battery works on most cars as a first port of call. If you can then take it to a German car specialist and explain the situation, they will hook it up to VAGCOM and do a fault code scan. I wouldnt be suprised if it comes up with some sort of ecu / internal memory error.
You should be ok from there so long as you avoid the 'tuning box' and induction kit. If you want a remap you should get it done properly by a reputable dealer. If the box you have is from a reputable dealer then you should speak to them to see if its corrupted.
A note on induction kits: Beware the downsides. Yes they make a good noise. But other than that they increase fuel consumption, mess with the air / fuel ratio sensor and can potentially damage your engine if the filter gets damp or dirty. The only power increase you will ever see from an induction kit is dependant on whether you have a good exhaust system and a reliable remap. Induction kits will typically give aroud 3-5bhp gain on an engine such as yours.
Where did you get the tuning box? Is it an 'internet special', piggyback unit which fits onto the ecu? This i think is the source of the problem. Its potentially corrupted and creating a checksum error on the ecu. This will send the car into 'limp mode' and will make the car feel weak and unwilling to perform.
The first thing you should do is remove the tuning box and the induction kit to get the car back to standard. Then disconnect the battery for 90 seconds. This will reset the ecu and all parameters should be back to normal (and any warning lights will go out). Disconnecting the battery works on most cars as a first port of call. If you can then take it to a German car specialist and explain the situation, they will hook it up to VAGCOM and do a fault code scan. I wouldnt be suprised if it comes up with some sort of ecu / internal memory error.
You should be ok from there so long as you avoid the 'tuning box' and induction kit. If you want a remap you should get it done properly by a reputable dealer. If the box you have is from a reputable dealer then you should speak to them to see if its corrupted.
A note on induction kits: Beware the downsides. Yes they make a good noise. But other than that they increase fuel consumption, mess with the air / fuel ratio sensor and can potentially damage your engine if the filter gets damp or dirty. The only power increase you will ever see from an induction kit is dependant on whether you have a good exhaust system and a reliable remap. Induction kits will typically give aroud 3-5bhp gain on an engine such as yours.
On the time difference between fitting and getting your error, this can happen at any time. An American company used to offer remaps for Audi cars (mention no names) and many owners were getting checksum errors and 'limp mode' 13 hrs / 300 miles (whichever came soonest) after upload. Worth noting.
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