Tewkes Posted March 14, 2015 Report Share Posted March 14, 2015 Slightly confused with this EGR business. Some people are saying keep it and clean it and other saying dele it. What are the pros and cons of deleting the EGR? I've done the swirl flap removal. Car is getting a full service and EGR clean next Saturday. Regarding the remap; would it be worse to have an EGR or not? Does it effect fuelling or running of a car. Shall I get the EGR mapped out? I know a decat is to do before but what about FMIC? Is there any need to get one if keeping standard turbo thanks. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
StuBeeDoo Posted March 14, 2015 Report Share Posted March 14, 2015 (edited) What are the pros and cons of deleting the EGR? Pros = No soot going back into the engine, which in turn = the inlet manifold, ports and valves don't clog-up with horrible sticky tarry stuff, restricting the amount of air going in, and therefore performance. Some of that sticky stuff inevitably ends-up in the sump (because piston rings never seal 100%) contaminating the oil. Con(s) = Do-gooders will insist you're making a massive contribution to Global Warming - you naughty boy. As for the mapping/fuelling question, I don't know the answer to that yet. I'd like to talk to a reputable mapper about it, but I never seem to get 'round to it. I've deleted my EGR and it still runs fine with no EML - but mine is a Euro3 engine. AFAIK the Euro4 engines throw the EML if they are run with the EGR disconnected, but they still run fine. HTH Stuart. Edited March 14, 2015 by StuBeeDoo Link to comment Share on other sites More sharing options...
Tewkes Posted March 14, 2015 Author Report Share Posted March 14, 2015 Sorry but the EML and euro3/4 lost me. I have an 03 320d saloon. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Todd1983 Posted March 14, 2015 Report Share Posted March 14, 2015 Doing a proper egr delete also brings the boost in harder as all the exhaust gas is being directed through the turbo. Felt massive difference when deleted mine Link to comment Share on other sites More sharing options...
StuBeeDoo Posted March 14, 2015 Report Share Posted March 14, 2015 Euro3 etc are emissions standards. Euro4 was applicable to all cars registered Jan '05 onwards, so BMW likely introduced it during the '04 model year. I don't know of a 100% definitive way of easily telling which your car is, but if it's manual transmission and Euro3 it will have a plain EGR pipe from the manifold to the EGR valve, not a box with a coolant pipe running to it. 320Rob 1 Link to comment Share on other sites More sharing options...
Tewkes Posted March 14, 2015 Author Report Share Posted March 14, 2015 Todd, any fuel changes? Better or worse on fuel. So it's a blanking plate, rerouting the pipe work then getting a map to map the engine management and sensor out? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
320Rob Posted March 14, 2015 Report Share Posted March 14, 2015 Just do what i did at first, remove vac hose and plug it with a screw or golf tee.. but now i have removed the full system (egr valve and cooler). Blanked the manifold and capped off coolant pipes may aswell clean out the inlet manifold too! Be running a lot cleaner Link to comment Share on other sites More sharing options...
320Rob Posted March 14, 2015 Report Share Posted March 14, 2015 And definitely do a decat, either first only or order the ecotune downpipe and gut secondary cat... as for FMIC have a look on txautosport where i boughr mine. Great guys and product is very good quality Link to comment Share on other sites More sharing options...
CharlE46 Posted March 14, 2015 Report Share Posted March 14, 2015 Euro3 etc are emissions standards. Euro4 was applicable to all cars registered Jan '05 onwards, so BMW likely introduced it during the '04 model year. I don't know of a 100% definitive way of easily telling which your car is, but if it's manual transmission and Euro3 it will have a plain EGR pipe from the manifold to the EGR valve, not a box with a coolant pipe running to it. November 2003 was the change over date on the 320d from euro 3 to 4 StuBeeDoo and 320Rob 2 Link to comment Share on other sites More sharing options...
steviep351 Posted March 14, 2015 Report Share Posted March 14, 2015 I haven't yet got round to decaf, but I took out swirl flaps, blanked egr, cleaned MAF and had a remap. Different car all together well worth it. Getting what specs say now, urban 49mpg and as high as 58mpg on motorway. CharlE46 1 Link to comment Share on other sites More sharing options...
Tewkes Posted March 15, 2015 Author Report Share Posted March 15, 2015 Blanked EGR the same as completely removing it? Sounds good. Gut the secondary cat? What is the euro all about, if it throws up an engine management light of the EGR is disconnected? If it is getting a map they can map the sensor out of the ecu anyway. Never heard of cleaning the MAF, any threads? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
The_Judge_ Posted March 15, 2015 Report Share Posted March 15, 2015 http://www.e46zone.com/forum/topic/54396-egr-pipework-removal-diy-egr-delete/ http://www.e46zone.com/forum/topic/10414-stage-1-egr-valve-cleaned/ Link to comment Share on other sites More sharing options...
steviep351 Posted March 15, 2015 Report Share Posted March 15, 2015 Blanked EGR the same as completely removing it? Sounds good. Gut the secondary cat? What is the euro all about, if it throws up an engine management light of the EGR is disconnected? If it is getting a map they can map the sensor out of the ecu anyway. Never heard of cleaning the MAF, any threads? Sent from my iPhone using Tapatalk I removed my egr with a blanking kit. Cleaning or removing will just let cleaner air into inlet manifold. Cleaning MAF will increase your mpg if it's not been done before. Link to comment Share on other sites More sharing options...
Tewkes Posted March 15, 2015 Author Report Share Posted March 15, 2015 Thibk I'll blank it off and get it mapped out. Yeah I've never heard of the MAF clean or seen a diy. Will have to have a look into that. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Todd1983 Posted March 15, 2015 Report Share Posted March 15, 2015 (edited) Just use electrical contact spray to clean the maf. I don't really look at fuel consumption on mine in that much detail lol. My eml light is on due to the egr delete. But I have a Bluetooth adapter and torque pro app and can clear it, just comes back everytime I start the car lol Sent from my iPad using Tapatalk Edited March 15, 2015 by Todd1983 Link to comment Share on other sites More sharing options...
