MMR Posted January 17, 2013 Report Share Posted January 17, 2013 Okay, so I seem to find alot of different information about EGR deletes.Some say that removing the EGR "helps keep the combustion temps down, increases mpg and makes cleaner emissions" and some say that the point of the EGR system is to "help keep the combustion temps down, increases mpg and makes cleaner emissions".And some say "EGR delete is worth 0 hp" and some say it gives a few HP.But with out a tune, the whole idea of deleting it is to clean up the engine bay and/or if it stops working and fixing it is too expensive. And the place where you live doesn't care about smog testing the car.Anyway; what I cant seem to get an answer to is; if the EGR gets "deleted" in a tune (and of course the actual EGR system also removed from the car), what does this actually do for the car then? Link to comment Share on other sites More sharing options...
Slykin Posted January 17, 2013 Report Share Posted January 17, 2013 Removing the EGR actually should RAISE EGR temps and lower MPG... theoretically. The EGR recirculates exhaust gases back into the heads which cools your combustion temps, and the leftover fuel in the exhaust adds to MPG. Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 I know that lol. My question was not how the EGR system works. But deleting it and have the system removed with a tune too, what does that do? Link to comment Share on other sites More sharing options...
Det_Riot Posted January 17, 2013 Report Share Posted January 17, 2013 He wants to know what gets shut off turned off etc in a tune that people actually go through the effort of getting it tuned off. Does that make sense? Like what is the computer still doing when you physically remove the egr but not systematically Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 What I am asking in Danglish (Danish + English) is EGR delete + tune, what does that do? Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 What I am asking in Danglish (Danish + English) is EGR delete + tune, what does that do?..or more like trying to ask, if my english vocabulary was better.. Link to comment Share on other sites More sharing options...
Det_Riot Posted January 17, 2013 Report Share Posted January 17, 2013 ..or more like trying to ask, if my english vocabulary was better..Damn foreigners..... Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 Damn foreigners.....This^^ Link to comment Share on other sites More sharing options...
95opal Posted January 17, 2013 Report Share Posted January 17, 2013 Deleting the EGR both physically and in the tune will net you no more than a cleaner bay, period the end. lol Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 Deleting the EGR both physically and in the tune will net you no more than a cleaner bay, period the end. lolThat was the answer I was looking for. Thank you sir! Link to comment Share on other sites More sharing options...
Det_Riot Posted January 17, 2013 Report Share Posted January 17, 2013 Rich, when you turn off egr in your tune, do you know what exactly changes in the way your computer has your car run or no? Link to comment Share on other sites More sharing options...
95opal Posted January 17, 2013 Report Share Posted January 17, 2013 your welcome Link to comment Share on other sites More sharing options...
95opal Posted January 17, 2013 Report Share Posted January 17, 2013 Rich, when you turn off egr in your tune, do you know what exactly changes in the way your computer has your car run or no?I can diagnose ,fabricate and build them but tuning isnt my game so I cant really help you there. If I had to guess I would say it varies the timing and fuel according to the feedback it sees from the EGR without that function turned on it just bypasses and dosent adjust timing or fuel. Remember thats just a guess as Im not into self tuning, just dont have the time or will to learn lol Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 Other than to clean up the engine bay, LT install and if the EGR stops working, are there any other reason to delete it?Even with a tune, is there any advantage of having the EGR deleted? Link to comment Share on other sites More sharing options...
95opal Posted January 17, 2013 Report Share Posted January 17, 2013 Other than to clean up the engine bay, LT install and if the EGR stops working, are there any other reason to delete it?Even with a tune, is there any advantage of having the EGR deleted?Absolutely no advantage Link to comment Share on other sites More sharing options...
MMR Posted January 17, 2013 Author Report Share Posted January 17, 2013 Absolutely no advantageHmm..okay.It is just a pretty common mod to do to these cars, so it is just kind of strange if technically theres no point of it and it is pretty much worthless. But I guess the same thing goes for CAIs lol. Link to comment Share on other sites More sharing options...
95opal Posted January 17, 2013 Report Share Posted January 17, 2013 Its common with the 5.0 guys because everyone usually swaps intakes... they dont want to deal with the rusted egr tube and nuts or they brake the tube yada yada. Trust me there is 0 performance gain from doing this Link to comment Share on other sites More sharing options...
Det_Riot Posted January 17, 2013 Report Share Posted January 17, 2013 I can diagnose ,fabricate and build them but tuning isnt my game so I cant really help you there. If I had to guess I would say it varies the timing and fuel according to the feedback it sees from the EGR without that function turned on it just bypasses and dosent adjust timing or fuel. Remember thats just a guess as Im not into self tuning, just dont have the time or will to learn lolMissed this post earlier! Makes sense to me, mines shut off in my tune and i have a delete pulley so no harm no foul here. Link to comment Share on other sites More sharing options...
64bit_Tuning Posted January 17, 2013 Report Share Posted January 17, 2013 Rich, when you turn off egr in your tune, do you know what exactly changes in the way your computer has your car run or no?I can diagnose ,fabricate and build them but tuning isnt my game so I cant really help you there. If I had to guess I would say it varies the timing and fuel according to the feedback it sees from the EGR without that function turned on it just bypasses and dosent adjust timing or fuel. Remember thats just a guess as Im not into self tuning, just dont have the time or will to learn lolIve got this... gimmie a few minutes to get all the data sorted.Missed this post earlier! Makes sense to me, mines shut off in my tune and i have a delete pulley so no harm no foul here.You are confusing the thermactor air pump, and the EGR... Link to comment Share on other sites More sharing options...
Det_Riot Posted January 17, 2013 Report Share Posted January 17, 2013 Mk, I'll wait for your response! Link to comment Share on other sites More sharing options...
64bit_Tuning Posted January 18, 2013 Report Share Posted January 18, 2013 Air - Error 332 Threshold (EGR) IrrelevantAir - EGR Type (Sonic, PFE, None) This is where the system gets turned off.Air - EGR Self Test Hardware Present IrrelevantAir - EGR Test Max Idle IrrelevantAir - EGR Multiplier IrrelevantAir - EGR Alt vs BP Irrelevant (affects EGR Multiplier for changes in barometric pressure)Air - EGR Multiplier vs ACT Irrelevant (EGR Multiplier is not affected by changes in air charge temp)Air - EGR Multiplier vs ECT Somewhat Relevant (EGR Multiplier is increased from 0% to 99% in a linear fashion from ECT of 100° to 150° and reduced from 99% to 25% from an ECT of 230° to 240°, This also means that the EGR is completely disabled when ECT is less than 100°)Spark - Base Adder EGR (Still figuring this one out...)Spark - Borderline Adder EGR (When the EGR is functioning, Spark timing is added to the BORDERLINE timing table. Adds between 0.63° and 1.13° advance.)System - Fuel & EGR Scalar for Load (X-Value set for tables) IrrelevantSystem - Fuel & EGR Scalar for RPM (Y-Value set for tables) IrrelevantAir - EGR Altitude (MAF value Adder RE: load vs RPM when the ECM references the Altitude Spark Table)Air - EGR Sea Level (MAF value Adder RE: load vs RPM when the ECM references the Sea Level Spark Table)By deleting the EGR system, your car will add a small bit of fuel based on the last two tables referenced above. This is only PART of why the car suffers a loss in gas mileage. By disabling the EGR system via tune, you eliminate this as an issue. The timing changes are minimal across the board. Link to comment Share on other sites More sharing options...
Det_Riot Posted January 18, 2013 Report Share Posted January 18, 2013 OOOOOO gotcha! Great wealth of information man! Looks like you're pretty damn knowledge with BE Link to comment Share on other sites More sharing options...
64bit_Tuning Posted January 18, 2013 Report Share Posted January 18, 2013 OOOOOO gotcha! Great wealth of information man! Looks like you're pretty damn knowledge with BEI've done my fair share of tuning... Probably the main reason why my 347 idles at 650rpm without a single stumble or surge... even WITH the OEM ECU! If EvilCW311???? is on here, I would certainly like to hear from him regarding the mail order chip I burned him. Link to comment Share on other sites More sharing options...
Det_Riot Posted January 18, 2013 Report Share Posted January 18, 2013 ^I'm actually talking to him as we speak, he's been busy so he hasn't updated anything in a while. Link to comment Share on other sites More sharing options...
Brian Posted January 18, 2013 Report Share Posted January 18, 2013 I never had plans to delete my EGR but I'm glad I read through this thread. Great information. Link to comment Share on other sites More sharing options...
OnyxCobra Posted January 18, 2013 Report Share Posted January 18, 2013 I deleted mine just to clean up the engine bay and cause it said the KB wasn't compatible but i'm not sure why. Link to comment Share on other sites More sharing options...
Brian Posted January 18, 2013 Report Share Posted January 18, 2013 So if I understand Mk2 correctly, you should "delete" the EGR in the tune but not actually remove it? Or only remove it if you're going to be correctly "deleting" it in the tune not just removing it without tune changes?(reading comprehension fail) Link to comment Share on other sites More sharing options...
MMR Posted January 18, 2013 Author Report Share Posted January 18, 2013 To my understanding; if you remove the EGR system from the car, you should have it removed in a tune too. Otherwise you will see the trouble codes that mk 2 was discribing, because the car ECU still thinks the EGR system is still there. Link to comment Share on other sites More sharing options...
MMR Posted January 18, 2013 Author Report Share Posted January 18, 2013 That was some good info right there by the way Mk. 2.Thank you for that! Link to comment Share on other sites More sharing options...
Brian Posted January 18, 2013 Report Share Posted January 18, 2013 Thanks Morten. That's what I figured. Like I said I never thought about removing the EGR aside from if I ever got a new motor and wanted to make the engine bay like Opal's or something. Which of course I would LOVE to do. Link to comment Share on other sites More sharing options...
OnyxCobra Posted January 18, 2013 Report Share Posted January 18, 2013 yeah if you're going to remove the tube you need to delete it in the tune, if you're not going to remove the tube then you should leave it active. Link to comment Share on other sites More sharing options...
