Removing EGR system on 5sfe, sorry if its a repost.. redirect if is Options

[Supersprynt]

[macavely]

i would like to know who had done this ON ther Celica ?

[NEVERSTOP]

well I think for right now im just gonna try and figure out what is causing the CEL and fix it.. really dont wanna spend money on something I think is a pointless function.. at least for me - No emmision checks

But I can't seem to find any answers for this.. its almost 50/50 as for people suggesting it and discourageing it.. maybe not on this board but on other fourms.. who knows..will drop it when I get around to puttin my 3s in there for sure but for the 5sfte will prolly just leave it alone

[Kwanza26]

For my final word...

I'll confirm what I've said before... and backup your info NEVERSTOP about the EGR function. Removing it will not solve your CEL problem, in fact, it will actually make it permanent. There isn't a real way (at least an easy one, short of litterally hacking the ECU) to remove the EGR and trick the ECU into not monitoring it... so you'll always have a CEL. My cousin has a similar thing with a CAT-less DC header on his 02 Civic SI, and he gets a CEL every now and then (but we can clear it cause we have the tools...) Anyways... as for pros and cons... the pro isn't huge, but the con isn't huge either. The EGR does have the side effect of reducing detonation cause it helps cool the combustion chamber, but it also does add a slight performance decrease because it spits back unclean induction... but give an take. As I said before... it's not a matter or removing it that's hard, but removing it is not gonna solve your CEL problem.

[Snarfer]

Most of the cons created by the egr are reduced or negated from the ecm controlling timing and injector behavior during high egr operations. removing it would reduce nastry crap inside of the intake manifold, but the ecm won't like that. I'm not sure if the ecm will still change the timing if it knows that the egr is not working, but that is the probable cause of the extra detonation. The egr is an INTEGRAL part of the engine operation under a stock ecm and removing would not be a good idea.

toyota egr white paper

This post has been edited by Snarfer: Sep 9, 2004 - 5:22 PM

[NEVERSTOP]

jeez snarfer.. your all about the EGR

I will prolly leave it on for now... but still think on my perticualar setup it would prove benifical.

my ECU/ECM is gonna be all screwed up on timing here in a few weeks newayz with the 5sfte.. that is the reason for the MSD 6BTM and think with the larger injectors/fuel pump/FMU I would run a low chance of detoniation.

as for the EGR being an INTEGRAL part of the motor... it is only that way because of how the ECU is programed... example: JDM/EUROPEAN spec verisoins of the 5sfe with out the EGR system.

think if you swapped out the ECU/ECM to a JDM spec one the motor would run perfectly fine with the addition of less sludge... which is accually quite a bit.. read on MR2OC.net about a guy the ran a catch tank and picked up 30cc's in a month and a half! thats alot over the course of 10-15 years.

I think that if you reset the ECU to read the emission controls at 0 across the board it would also not trip a CEL.. Have a family friend that is the head tech up at Lujacks... one of the largest automalls in the country - he remaps ECU's all the time will prolly talk to him this weekend and see what he has to say about EGR removal.

but I do thank all of you for your imput on this matter... just wish something like this was a little more straight forward on the PRO/CON side of things.. kinda like an intake is

[Detatch]

im pretty sure i remember something about jdm having a internal egr.

also can someone confirm that jdm emissions are a lot stricter than they are here.

CONFIRMATION: i spent 18 months in japan, their emissions are VERY strict. more so than anywhere i've been in the united states. that's why we're able to get a lot of jdm parts from over there, lol... they're not allowed to run some engines because of emissions... i only saw 2 GT-Four's when i was there, and both were owned by american military. shortly after they were released, emissions tightened... i think the few that are still in operation over there were garaged and such since then and are now old enough to be driven legally, because both of the ones i saw were the early years of the gen6... i think one was 94, and the other dude said his was a 95 if memory serves...