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post #1 of 12 (permalink) Old 05-14-2019, 05:36 PM Thread Starter
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EGR Mod?

Hey all,

I'm finishing up replacing my valve cover gaskets and am wondering if I should do the EGR mod but wanted to know if anyone ever ended up having weird / concerning behavior after doing it. I don't want to assume I know more than the engineers that built it.

Anyone do it and have any long term data on reliability and results?

also thinking about the TB coolant mod.


Thanks!

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post #2 of 12 (permalink) Old 05-14-2019, 07:03 PM
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Originally Posted by [email protected] View Post
Hey all,

I'm finishing up replacing my valve cover gaskets and am wondering if I should do the EGR mod but wanted to know if anyone ever ended up having weird / concerning behavior after doing it. I don't want to assume I know more than the engineers that built it.

Anyone do it and have any long term data on reliability and results?

also thinking about the TB coolant mod.


Thanks!

Sent from my SM-N950U using Tapatalk
What EGR mod are you talking about? EGR reroute or optimized? Having both on the car for 4 years, I've had no issues at all. While I have no data to back it up, I'm sure it's better than letting precat dust into the intake manifold and down into the block. Lol

Ray.
2003 6s
Brakemotive Drilled and slotted rotors, Modified eBay CAI, EGR reroute and optimized, TB coolant delete, Brake light mod, AWR Racing Lower dog bone, AWR Right engine mount, BIG 5 upgrade, Battery Relocated, Custom Busbars, Optima Red top, 2 12" Planet Audio BBD12, Rockville Audio 1400w 4chan amp, Rockville Audio 8000w sub amp, RX 8 seats, Custom LED side markers, Lower rear bumper lights, Transmission cooler, Derale Performance transmission filter kit, and lots more to come!!!
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post #3 of 12 (permalink) Old 05-14-2019, 08:23 PM Thread Starter
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EGR optimize (cutting EGR probe)

I think my 07 is immune to the precat issue iirc

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post #4 of 12 (permalink) Old 05-14-2019, 11:15 PM
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Originally Posted by [email protected] View Post
EGR optimize (cutting EGR probe)

I think my 07 is immune to the precat issue iirc

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I'm not sure of immune, but I think the consensus is less likely. Also IIRC the EGR tube on the later engine is modified already...I remember popping mine out but it didn't look like the earlier models that people were doing it on.

- 2007 Mazda 6s Sport Wagon Sport VE, A6, bought Nov 30th '18

- 2017 Chevrolet SS Nightfall Gray 6mt & LS3
- 1957 Chevrolet Sports Sedan
- 1992,1994 Infiniti G20 2.0L, 5mt
- 2000 Infiniti G20 2.0L, auto

Previous Mazdas: 89 & 2 x 92 626s (GD)

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post #5 of 12 (permalink) Old 05-14-2019, 11:27 PM Thread Starter
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Originally Posted by hurddawg View Post
I'm not sure of immune, but I think the consensus is less likely. Also IIRC the EGR tube on the later engine is modified already...I remember popping mine out but it didn't look like the earlier models that people were doing it on.
here is mine, in the top right corner.

I thought they routed differently. hmm...

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post #6 of 12 (permalink) Old 05-14-2019, 11:37 PM
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I don't remember exactly but I remember looking at it and thinking it done already. Maybe mine was done?

- 2007 Mazda 6s Sport Wagon Sport VE, A6, bought Nov 30th '18

- 2017 Chevrolet SS Nightfall Gray 6mt & LS3
- 1957 Chevrolet Sports Sedan
- 1992,1994 Infiniti G20 2.0L, 5mt
- 2000 Infiniti G20 2.0L, auto

Previous Mazdas: 89 & 2 x 92 626s (GD)

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post #7 of 12 (permalink) Old 05-15-2019, 10:24 AM Thread Starter
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Originally Posted by hurddawg View Post
I don't remember exactly but I remember looking at it and thinking it done already. Maybe mine was done?
Perhaps, not sure. I'm just a little hesitant about lobbing off part of my probe without considering the negative ramifications.

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post #8 of 12 (permalink) Old 05-15-2019, 10:28 AM
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Originally Posted by [email protected] View Post
Perhaps, not sure. I'm just a little hesitant about lobbing off part of my probe without considering the negative ramifications.

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What negatives were you thinking of?

- 2007 Mazda 6s Sport Wagon Sport VE, A6, bought Nov 30th '18

- 2017 Chevrolet SS Nightfall Gray 6mt & LS3
- 1957 Chevrolet Sports Sedan
- 1992,1994 Infiniti G20 2.0L, 5mt
- 2000 Infiniti G20 2.0L, auto

Previous Mazdas: 89 & 2 x 92 626s (GD)

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post #9 of 12 (permalink) Old 05-15-2019, 11:15 AM Thread Starter
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I'm honestly not sure. I'm no mechanic, but I was curious to know if anyone has any data or even stories. Just want to be careful, since there is no uncutting it, only buying another one, best case.

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post #10 of 12 (permalink) Old 05-15-2019, 11:08 PM
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The DIY from TGNY has some data to back it up, he also was/is a tuner so I'd feel confident in saying that he had the proper tools to test it and correctly. @DJ Raydiate says he hasn't had an issue withe the mod or reroute, so I think you shouldn't worry about 'negatives' I say mod away!

- 2007 Mazda 6s Sport Wagon Sport VE, A6, bought Nov 30th '18

- 2017 Chevrolet SS Nightfall Gray 6mt & LS3
- 1957 Chevrolet Sports Sedan
- 1992,1994 Infiniti G20 2.0L, 5mt
- 2000 Infiniti G20 2.0L, auto

Previous Mazdas: 89 & 2 x 92 626s (GD)

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