[Puerto Rican 335d]

Hooper i hv the block off plates from IAKNOWN. Ok I see your plight but again my car is running great Im just curious.

[Hoooper]

Originally Posted by Puerto Rican 335d

Hooper i hv the block off plates from IAKNOWN. Ok I see your plight but again my car is running great Im just curious.

I dont think I have a plight?

Anyway, since you have the plates that means the code was deleted. Just like TDIwyse's tune was from ecotune IIRC.

[Puerto Rican 335d]

whatever amigo sorry I couldn't be more of assistance to you

[Hoooper]

Im so confused...

[TDIwyse]

PR, what this means is if you remove the EGR blocks then your car will still be sucking the exhaust gas into the intake and continuing to buildup carbon on the intake/valves. It's good you have the blocks in place as your tuner did not, in fact, code out the EGR operation via software. This is the same situation those of us with Ecotune remap have. But it appears those who have used Jarek do not.

I don't get codes for the EGR blockoff either because Ecotune removed that code from the list of what gets flagged by the car ... and my car also runs great :-)

[GottaBeKD]

Originally Posted by TDIwyse

PR, what this means is if you remove the EGR blocks then your car will still be sucking the exhaust gas into the intake and continuing to buildup carbon on the intake/valves. It's good you have the blocks in place as your tuner did not, in fact, code out the EGR operation via software. This is the same situation those of us with Ecotune remap have. But it appears those who have used Jarek do not.

I don't get codes for the EGR blockoff either because Ecotune removed that code from the list of what gets flagged by the car ... and my car also runs great :-)

And don't forget. No codes.

Even with the EGR coded out I recall reading it is still a good idea to block it.

[GreekboyD]

What's Lenny saying amigo?

[Puerto Rican 335d]

Will find out over the weekend hes to busy on a project and then flying in saturday to PR

[135i_vs_]

Originally Posted by Puerto Rican 335d

again my car is running great Im just curious.

Of course your car will run great; you have a tune. EGR or no EGR, car will run great. EGR has minimal effect on performance.

When we see the obdii readiness status screenshot, will have a better idea about the tune.

[Puerto Rican 335d]

I think i posted that already

[GottaBeKD]

Originally Posted by 135i_vs_

Of course your car will run great; you have a tune. EGR or no EGR, car will run great. EGR has minimal effect on performance.

When we see the obdii readiness status screenshot, will have a better idea about the tune.

Keep in mind EGR is blocked off. So coded out or not there are no gases going back into the intake.

Just thinking out loud here. The DDE is expecting hot EGR and supposedly the fuel maps are set accordingly. When coded out the DDE knows that no EGR is expected and has the appropriate maps. Does that make a difference in the grand scheme of things?

Also I believe the OBD2 readiness has not been cracked as per the screenshots.

[TDIwyse]

Originally Posted by GottaBeKD

Just thinking out loud here. The DDE is expecting hot EGR and supposedly the fuel maps are set accordingly. When coded out the DDE knows that no EGR is expected and has the appropriate maps. Does that make a difference in the grand scheme of things?

Also I believe the OBD2 readiness has not been cracked as per the screenshots.

There's an EGT probe that goes in the EGR path, so the DDE would know the temp of the recirculated gases (if any). But it also knows via calibration steps if things are working properly or not ... hence the normal codes that show up when you block the EGR (assuming your tuning hasn't removed/altered things). I did a full EGR cooler delete and that probe is sitting in ~ ambient air, so the DDE would know (besides the fact the recirculated air behavior isn't affecting the MAF readings) the temp of the EGR portion of the intake air stream is not hot...

This was one of the concerns I had when first blocking/eliminating the EGR path a long time ago. But doing used oil analysis, monitoring mpg's, demonstrating great power capability ... I haven't been able to quantify any negative aspects in terms of performance/efficiency/engine robustness issues. And the engine oil stays visually much cleaner now than it used to be.

[GottaBeKD]

Originally Posted by TDIwyse

There's an EGT probe that goes in the EGR path, so the DDE would know the temp of the recirculated gases (if any). But it also knows via calibration steps if things are working properly or not ... hence the normal codes that show up when you block the EGR (assuming your tuning hasn't removed/altered things). I did a full EGR cooler delete and that probe is sitting in ~ ambient air, so the DDE would know (besides the fact the recirculated air behavior isn't affecting the MAF readings) the temp of the EGR portion of the intake air stream is not hot...

This was one of the concerns I had when first blocking/eliminating the EGR path a long time ago. But doing used oil analysis, monitoring mpg's, demonstrating great power capability ... I haven't been able to quantify any negative aspects in terms of performance/efficiency/engine robustness issues. And the engine oil stays visually much cleaner now than it used to be.

Thanks for the explanation TDI. Trying to learn all I can about this engine. It really is an engineering masterpiece - well minus the emissions crap that's been wedged into it.

[135i_vs_]

Originally Posted by GottaBeKD

Keep in mind EGR is blocked off. So coded out or not there are no gases going back into the intake.
Also I believe the OBD2 readiness has not been cracked as per the screenshots.

Ah OK, didn't catch that part. If those block off plates are installed, then it will be interesting to see how his tuner blocks the code(s). Also, assuming his tuner had no idea about the "block off plates" when making the software modifications, main objective would have been to alter the EGR ratio. This was not accomplished based on the screenshots.

PR the emissions status screenshot you posted before didn't look right; almost everything including O2 sensors showed unavailable. The car MUST read data from the primary O2 sensors to run correctly.

Please try again. Something is fishy with your module and Torque app settings. Check adapter settings icon and make sure it says all is "OK".

[Mik325tds]

Another side aspect to consider when blocking off EGR with tune to block DTCs:
I talked to Jarek the other day and he said depending on how the tune is done (masking EGR DTCs) it also may affect the post injections which eventually will clog your DPF. It seems during regens, the temperature isn't fully reached to burn off the soot anymore.
He recommends getting rid of the DPF/SCR at the same time you tune out the EGR DTCs.
However, if you don't have a tune there's nothing to worry about since the the EGR block off plates will cause DTCs but not affect the post injections. So DPF regens will still work properly.

[Puerto Rican 335d]

135i it keeps on saying the same showing unavailable the last time I read it and also, Lenny was aware of the block off plates i have another screenshot for you guys.

[siicom]

I am thinking of doing just the egr delete without a tune for power.

What other benefits are there besides getting no code in the future?

[Yozh]

PR, that screenshot or parameters is at idle. Correct me if i'm wrong, (i know the throttle vs egr) but I believe I have seen the 94.9% value for the EGR at first start up. That would lead me to believe your EGR is fully functional. May be those values are the same for both at start-up. I'll go check my historical data.

[Puerto Rican 335d]

Yohz its at start also no matter what i do its stays the same 94.9

[TorqueAddict]

Originally Posted by Puerto Rican 335d

Yohz its at start also no matter what i do its stays the same 94.9

Hmm.. It seems like it is fully open all the time. The DTC's have been deleted by the tuner and the thing that is saving your intake are the Block off plates.

[GreekboyD]

Originally Posted by TorqueAddict

Hmm.. It seems like it is fully open all the time. The DTC's have been deleted by the tuner and the thing that is saving your intake are the Block off plates.

+1 for Lenny having the foresight to add the plates.

[Yozh]

I'll check on my car, I may be wrong. I have the data for the EGR and at start-up and until it's warm it stays at 94.9%. May be it's the same value as for the throttle and that is what's getting me.