Which module are you hoping to install? Keen to see how you go but if you have a faulty EGR unit I think you'll still need to replace the EGR unit. All the electronic EGR disable units say they still open the EGR for overboost etc. Guys with full plates will get boost spikes presumably when the electronic throttle closes.Rain wrote:now I am planing to install 'EGR OFF' modules
jerrah wrote:Which module are you hoping to install? Keen to see how you go but if you have a faulty EGR unit I think you'll still need to replace the EGR unit. All the electronic EGR disable units say they still open the EGR for overboost etc. Guys with full plates will get boost spikes presumably when the electronic throttle closes.Rain wrote:now I am planing to install 'EGR OFF' modules
I couldn't imagine it would do any harm, you might have lower performance theoretically depending on which way it's stuck. When I bought my MK the EGR was busted and stuck open, it idled rough but otherwise drove fine until I fixed it. It drove better after I fixed it and it was very filthy in the intake manifold but I don't think it did any harm. Wouldn't your MQ still be within the 100,000km warranty so not needing to spend $950 on the part?Rain wrote:Does anyone know if a faulty EGR unit can do any harm to the engine if I keep driving it?
Have a look at this thread that has been going on for a while.Tony aka SPV Industries makes mention of a couple of things. Mainly that 4n15 uses the EGR valve for various DPF and overboost "blow off valve" related features for when the electronic throttle plate shuts. The Munji and various other solutions for electronic EGR put a resistor on one of the MAF wires which tricks the ECU that the intake air is too cold causing the EGR to stay shut. This could additionally effect the fueling of the motor as the ECU thinks the air is more dense than it actually is. Other people in that thread did some back to back testing and said that using the Munji cable the engine produced less boost and felt slower.Rain wrote:This is the module I was thinking of buying.
Sample size of one currently (Munji) see the other thread of info on what people have been doingRHKTriton wrote:Have you got a list of EGR off units jerrah?
On diesels without throttle plates they're not required. As these modern diesels have trickier turbos and electronic throttle plates I suspect it does it to stop a surge of pressure back to the turbo or blowing hoses off the intercooler. My understanding is the EGR opens when the MAP sensor goes over a certain pressure and the excess boost goes out the exhaust. If that is in fact what it does it works differently to a petrol car where the recirc or blow off valve takes the pressurised air from the after intercooler air and dumps it on the pre-turbo side when the manifold goes into high vacuum. (throttle plate shut)Why would EGR open on over boost?
It says on their page "Triton including MQ". I have no more information than that.ls2cruiser wrote:Jerrah, the other thread that you are placing a link to has mentioned on page 7 that chiptuning has a EGR module now available. Do we know if it for a MQ EGR? There seems to be some confusion here.
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