E46 330D 184 EGR Bypass?
Discussion
As a possible new 330d owner, I'd really like a bit of advice on which EGR bypass is considered to be the best these days? I've owned a 204bhp model before so it's not a total unknown but I never fitted a bypass on that one.
My understanding is that the 184 model has the rubber hose and jubilee connector to the EGR. The majority of the kits look like they'll leave the pipe on the left hand side hanging loose. I looked at the Allard kits and it looks like the 320d item would actually be the right one for the 184 car.
Anybody able to advise?
My understanding is that the 184 model has the rubber hose and jubilee connector to the EGR. The majority of the kits look like they'll leave the pipe on the left hand side hanging loose. I looked at the Allard kits and it looks like the 320d item would actually be the right one for the 184 car.
Anybody able to advise?
See my 330d thread if you want any tips. I fitted an egr delete to my 184 330d and then refitted the egr. The car had more power and did better mpg with the egr fitted. The delete looked nice and shiny but that was the only advantage. The egr valve is the original and the car has done 232k miles with it.
My theory as to why the 330d becomes less efficient with an egr delete is: it uses the air mass quantity as a key input to the DDE, when you remove the egr the amount changes. The DDE obviously adjusts to the new amount, but not in a manner that improves the car. Perhaps if a remap took into account no egr there could be an improvement. Another factor is that the exhaust gases going into the inlet manifold contain a gas which reduces combustion temp (can't remember which one). My advice on the 184 330 is to keep the egr.
My theory as to why the 330d becomes less efficient with an egr delete is: it uses the air mass quantity as a key input to the DDE, when you remove the egr the amount changes. The DDE obviously adjusts to the new amount, but not in a manner that improves the car. Perhaps if a remap took into account no egr there could be an improvement. Another factor is that the exhaust gases going into the inlet manifold contain a gas which reduces combustion temp (can't remember which one). My advice on the 184 330 is to keep the egr.
Edited by helix402 on Tuesday 3rd January 10:02
helix402 said:
See my 330d thread if you want any tips. I fitted an egr delete to my 184 330d and then refitted the egr. The car had more power and did better mpg with the egr fitted. The delete looked nice and shiny but that was the only advantage. The egr valve is the original and the car has done 232k miles with it.
My theory as to why the 330d becomes less efficient with an egr delete is: it uses the air mass quantity as a key input to the DDE, when you remove the egr the amount changes. The DDE obviously adjusts to the new amount, but not in a manner that improves the car. Perhaps if a remap took into account no egr there could be an improvement. Another factor is that the exhaust gases going into the inlet manifold contain a gas which reduces combustion temp (can't remember which one). My advice on the 184 330 is to keep the egr.
Interesting. Everybody seems to delete it. The bloody thing is usually in a right state inside also. I'd be keen to remove it but not at the expense of performance etc. Have to think carefully about this one. I will definitely go for a remap so might be OK to do the bypass at the same time.My theory as to why the 330d becomes less efficient with an egr delete is: it uses the air mass quantity as a key input to the DDE, when you remove the egr the amount changes. The DDE obviously adjusts to the new amount, but not in a manner that improves the car. Perhaps if a remap took into account no egr there could be an improvement. Another factor is that the exhaust gases going into the inlet manifold contain a gas which reduces combustion temp (can't remember which one). My advice on the 184 330 is to keep the egr.
Edited by helix402 on Tuesday 3rd January 10:02
Will go find your thread next
Gassing Station | BMW General | Top of Page | What's New | My Stuff