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Why you need to do an EGR delete

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Old Dec 29, 2014, 12:08 PM
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^^^^^^^^^^^^^^^^
Originally Posted by JohnBradley
A reason we thought of recently to consider an EGR delete stems from design of flow for the system. All of the exhaust flows right at the idle motor. Much like the DSMs that are known for killing idle motors, the Evos are starting to do it as well. This is in part because the EGR is pointed right at it. It also puts a lot of carbon in the throttle body and can cause sticking issues.
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Old Dec 31, 2014, 02:01 PM
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If I tuned the car in the past it should be good to go, no changes needed.
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Old Jan 2, 2015, 11:01 AM
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Originally Posted by JohnBradley
If I tuned the car in the past it should be good to go, no changes needed.
Yes, mine was the one not too long ago had a pulley seize up during a pull and broke the timing belt = broken valves, smashed up head, snapped spark plugs and FP Black ate valves.. was a good time, but you guys hooked me up with a complete long block .
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Old Jan 6, 2015, 02:50 PM
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Originally Posted by BOOST_ADDICT
Yes, mine was the one not too long ago had a pulley seize up during a pull and broke the timing belt = broken valves, smashed up head, snapped spark plugs and FP Black ate valves.. was a good time, but you guys hooked me up with a complete long block.
Gotcha
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Old Jan 31, 2015, 07:52 PM
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Glad I bough the Delete Kit good info!!
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Old Feb 4, 2015, 08:28 AM
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Great info
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Old Feb 4, 2015, 06:39 PM
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I deleted egr on my semi truck so might as well do it on my evo
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Old Feb 15, 2015, 09:44 AM
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Good info definitely investing in this
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Old Feb 15, 2015, 10:00 AM
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out of curiosity, has anyone found where in the Tehphra ROM to force pass the EGR? i gotta pass the OBD-II test.
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Old Feb 16, 2015, 05:10 PM
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Did EGR removal after reading this.

I disabled EGR a few years ago thanks to mrfred/tephra rom modifications, but to my surprise, two of EGR vacuum hoses were already disconnected.

After removal/block/capping vacuum ports, gained ~0.4 AFR, so had to touch the map to compensate the AFR change.

Highly recommended mod for older EVOs (purchased June 03), and thanks for the bringing this up, JohnBradley.
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Old Feb 16, 2015, 05:48 PM
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Really exact age of the car seems less important than overall mileage. Any Evo with more than 75k should consider this to either fix weird issues, possible idle problems, and at the very least prevent possible issues from arising when the EGR does start to bypass more.
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Old Feb 16, 2015, 05:56 PM
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Originally Posted by JohnBradley
Really exact age of the car seems less important than overall mileage. Any Evo with more than 75k should consider this to either fix weird issues, possible idle problems, and at the very least prevent possible issues from arising when the EGR does start to bypass more.
My EVO has only 45k miles, but I guess rubber vacuum hoses are affected by the age also. Anyway, highly recommended mod!

Thanks!
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Old Feb 21, 2015, 07:10 AM
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When can Ya get pics on the website?
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Old Feb 23, 2015, 06:29 AM
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i just did the EGR delete (capped hoses and made block off plate) and now when i put it in neutral and roll up to a stop my car idle freaks out and will idle up and down a few times before the car cuts off.
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Old Feb 23, 2015, 06:44 AM
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Originally Posted by hurdle18
i just did the EGR delete (capped hoses and made block off plate) and now when i put it in neutral and roll up to a stop my car idle freaks out and will idle up and down a few times before the car cuts off.
My friend , it's not that simple your tuner needs to tweak your ecu to make it work properly.
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