Dieseldave
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I see a lot of talk about EGR and butterfly mods for the 3ltr motors but what about the 2.5 it looks like a good idea but does it work for the smaller motor as well .I hope it does.
EGR and butterfly mods for 2.5
- Thread starter Dieseldave
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maddogrc
Member
i'm going to go past a turbo joint tomorrow and ask what they think.
10 bucks says its a standard and not variable turbo
10 bucks says its a standard and not variable turbo
going by pics someone posted of the 2WD 2008 D22 its a standard turbo. can't tell in the pics if it has a butterfly in the intake or not. the old 2.5 didn't so i'm guessing that it won't have it either.
maddogrc
Member
didnt manage to make it on saturday, bastards closed!
did a bit of reading and found this:
Exhaust gas recirculation - Wikipedia, the free encyclopedia
seems as if EGR is good? the last paragraph in the article is interesting, especially the part where it says that removing EGR causes build up of carbon...
did a bit of reading and found this:
Exhaust gas recirculation - Wikipedia, the free encyclopedia
seems as if EGR is good? the last paragraph in the article is interesting, especially the part where it says that removing EGR causes build up of carbon...
in petrol engines yes egr can be good. as they mentioned it lowers throttling losses which increase fuel eficency. however diesels don't have throttle butterflys so that doesn't apply.
with diesels EGR simply means some loss in power. your reducing burning temps, fuel is not fully burnt so you lose out in economy and performance. then there is the nasty side effects of clogging manifolds and tempermental control systems. a big cause of cracked heads is often egr valve sticking open.
egr works ok on new motorrs but put on 100,000kms or more and its a different ball game.
with diesels EGR simply means some loss in power. your reducing burning temps, fuel is not fully burnt so you lose out in economy and performance. then there is the nasty side effects of clogging manifolds and tempermental control systems. a big cause of cracked heads is often egr valve sticking open.
egr works ok on new motorrs but put on 100,000kms or more and its a different ball game.
maddogrc
Member
got a mate to confirm that it is a STANDARD turbo, well mine is anyways, lol.
so now how would us new crd boys go about blocking off the egr?
so now how would us new crd boys go about blocking off the egr?
simply fit a plate on the exhaust side of the EGR cooler (which runs across the front of the motor).
one problem can be the ECU can big up that there is no EGR flow and pop up an error code. some testing is required. you may have put a hole in the plate and let some EGR through.
take note of fuel consumption. some of the later variable turbo motors for some unknown reason have a drop in economy after blocking EGR. a case of test and find out.
one problem can be the ECU can big up that there is no EGR flow and pop up an error code. some testing is required. you may have put a hole in the plate and let some EGR through.
take note of fuel consumption. some of the later variable turbo motors for some unknown reason have a drop in economy after blocking EGR. a case of test and find out.
