bypassing the EGR

7mturbo

New Member
Mar 16, 2010
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The sticks.
is this possible? my original car either didn't have one or it was lost. the jdm engine didn't come with one and neither did the parts car..

p1539476_1.jpg
 

89supracrazy

New Member
Oct 31, 2009
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wise
Yes this is possible. I bought my car and it kept throwing the egr check engine code. It had the egr on it and I could not figure out why it was throwing the code. I tested it and it tested fine. I figure out on my own that the guy had upgraded the ecu to 89+ and it was California emissions. The egr that was own my car was not calif. emission. I put a 12k resistor in the plug and no more check engine light. The difference is one has a sensor built in and one dont. I got mine from suprasport but you can also purchase the block off plate at driftmotion. It also saves alot of trouble if you have to get to the egr block off in the back of the motor. I have been threw that already.
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
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Feb 10, 2006
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7mturbo;1539476 said:
is this possible? my original car either didn't have one or it was lost. the jdm engine didn't come with one and neither did the parts car..

Sure it's possible...is it smart to do so running a USDM ECU, well, that's a different story ;)
 

7mturbo

New Member
Mar 16, 2010
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The sticks.
my dad says he already blocked it off in the back using the piece off my parts car. is that all we need then?

---------- Post added at 06:32 PM ---------- Previous post was at 06:28 PM ----------

well a jdm ecu is as much as a EGR setup on ebay? do need to buy this for it to run? or just leave it blocked off?

---------- Post added at 06:34 PM ---------- Previous post was at 06:32 PM ----------

Sure it's possible...is it smart to do so running a USDM ECU, well, that's a different story ;)[/QUOTE]

what will happen?
 

ms07s

TORGUE!
Sep 29, 2007
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IIRC USDM ECU uses it for detonation suppression, so that safety net would be lost. JDM ecu or put an EGR on.
 

ben1984j

New Member
Jan 18, 2009
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Ft. Collins, CO
Yup...you would have to be most careful at part throttle under load (like when you're going up a hill)...boost + leaner mixture due to no EGR = greater chance of detonation.
 

Supraflymk3

Supraman
Dec 17, 2005
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Neenah, Wisconsin, United States
As long as you don't have the California ECU if you block off the EGR it should be fine. The cheapest place to get the blockoffplates is arizonaperformance.com you'll need the one that bolts to the side of the upper intake manifold if you already have the one on the back of the engine. Also the reason your JDM didn't have any EGR is because they don't use EGR over there or atleast not when the MK3's were built.
 

figgie

Supramania Contributor
Mar 30, 2005
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Supraflymk3;1539604 said:
As long as you don't have the California ECU if you block off the EGR it should be fine. The cheapest place to get the blockoffplates is arizonaperformance.com you'll need the one that bolts to the side of the upper intake manifold if you already have the one on the back of the engine. Also the reason your JDM didn't have any EGR is because they don't use EGR over there or atleast not when the MK3's were built.

say what?

it is really simple.

JDM tccs was not "tuned" with EGR.
USDM tccs was "tuned" with EGR.
 

lewis15498

Don't blame ebay cheapass
Sep 28, 2008
1,397
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Raynham, Massachusetts, United States
Supraflymk3;1539604 said:
As long as you don't have the California ECU if you block off the EGR it should be fine.

Are you going to pay for his rebuild after all the mid throttle detonation does its damage?

Didn't think so....

OP: If cost of the JDM ECU or the EGR set up is the same, you might as well get EGR, as you will get better mileage. Despite what some may tell you EGR does not sacrifice power as it is not active at WOT.
 

Another MkIII

Member
Feb 22, 2009
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Chicago
When I bought my car, it didn't have EGR, but it did have a hole in the block. Boost wasn't pushed past 10-12 PSI (Stock AFM and injectors), HG was intact when I did the teardown. There is a lot of argument as to whether or not removing EGR can cause this damage, but the lack of EGR is the only contributor I have found to the motor blowing up. Just saying. Get an EGR valve, you can get them pretty cheap.
-AM3
 

7mturbo

New Member
Mar 16, 2010
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The sticks.
wouldn't the jdm ecu help on future emissions removal though. i don't care all that much about mileage being it will barely effect it. but why go stock egr?
 

Poodles

I play with fire
Jul 22, 2006
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Fort Worth, TX
Search for "EGR*" without the quotes. There are tons of old discussions on this. The simple thing to say is if you are running a USDM ECU, run EGR. EGR gives better gas milage and lowers EGT's.
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
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Valley of the Sun
Supraflymk3;1539604 said:
As long as you don't have the California ECU if you block off the EGR it should be fine. The cheapest place to get the blockoffplates is arizonaperformance.com you'll need the one that bolts to the side of the upper intake manifold if you already have the one on the back of the engine. Also the reason your JDM didn't have any EGR is because they don't use EGR over there or atleast not when the MK3's were built.

7mturbo - I highly suggest you ignore this post.

Supraflymk3 - Get your facts straight before you post in the Tech Sections again.
 

Poodles

I play with fire
Jul 22, 2006
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You can also pump gas and smoke at the same time and never have problems. It doesn't make it a safe or smart thing to do...