Bernievarian said:

Nahnah ! the ECU will eventually compare the actual air flow vs the expected one with exhaust gas coming-in from the EGR and will pop-ip a warning !!

BRs, Bernie

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Salut Bernie!
This is the easiest way to fake EGR, tested and working with no error or warnings, even with check it works:


Connect to EGR plug a relay, it will simulate the electromagnetic valve inside EGR, I'm gonna record a video to proof it. EGR check is similar to lights check, it check if there is something getting voltage and intensity, if not, it will return circuit open and warning lamp.

Regards,
Julio.

And here it is:
[ame]https://youtu.be/C5-iXj2y6pA[/ame]

anyzunstudios said:

And here it is:
https://youtu.be/C5-iXj2y6pA

View attachment 180060

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I'd be interested in knowing how this affects your GP's performance, not that I'll be trying it myself! I'm not sure if what you've done would be legal here in the UK (I think it could also invalidate insurance but I'm not sure) but it's very impressive thinking. I guess you've 'hacked' your GP

mattyo said:

I'd be interested in knowing how this affects your GP's performance, not that I'll be trying it myself! I'm not sure if what you've done would be legal here in the UK (I think it could also invalidate insurance but I'm not sure) but it's very impressive thinking. I guess you've 'hacked' your GP

Click to expand...

EGR is just a valve that returns all your dirty smoke and hot "air" with oil mixed with all dirty dust due to combustion with diesel and returns all back to your engine avoiding emitting "CO2" and similar particles, but infact, " NOX" are worse than "CO2" and diesel cars emittes them. EGR in USA was a joke a few years ago, now I dont know, but many old cars does not have that system Installed by default. In Spain I dont know if it is ilegal, I dont think so, neither in UK, but I dont give a f***, because what is living without a bit of fun? hahaha I think that removing it is not ilegal, and for insurance neither, is worst repro or block EGR valve with some metal pieces (I dont know How it is called in English) that just remove the plug and using this. Insurance will not say nothing about it, but when you'll do car checks, connect it back.

You will feel better response in low RPMs, the car will get higher speed faster and high RPM sooner than with EGR, engine's life will be encreased, because EGR smokes and dust particles may block inyectors and pistons, and combustion without EGR will be better because you will use new fresh air from outside, needed for a good combustion, so also it might reduce consumition and smokes out from exhaust.

NOTE: After a few tries with the relay and engine on and a couples of KM, on my car ECU returns that EGR valve sometimes is locked, and intermmitent error, that is due to high engine temp., that blocks the chinese relay, but does not appears any warning message on dashboard, on ALFAOBD sometimes, so maybe I need to buy other that supports higher temps. Or move it to another place where fresh air will help, maybe close to air intake pipe.

Well, I hope it works to you too! And I helped you with this small tuto ?

Regards,
Julio.

anyzunstudios said:

I dont think so, neither in UK, but I dont give a f***, because what is living without a bit of fun?

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Indeed! Here in UK insurance companies ask about modifications so I guess if declared it may be ok.

Either way many thanks for your reply Julio

mattyo said:

Indeed! Here in UK insurance companies ask about modifications so I guess if declared it may be ok.

Either way many thanks for your reply Julio

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You're welcome! But that you said about notifications it is a crap, because why of I install LEDs on my car? Shows up notifications that my lights are broken, but instead, they works better than default ones, so if someone crash my car, I have to pay for it? That is silly, but if you do what I did, yes, no problems will appear on your dashboard for sure!

Regards,
Julio.

Hola Julio,

I had the solenoid removed from the valve body, so the ECU was still seing it as the original one. But afther about 30km, the MIL came on with error about insufficient EGR flow... Maybe it's due to what Euro Specs my car complies to, vs yours ? What is your engine ECU ? Mine is Magnetti Marelli 6F3...

Regards, Bernie

Bernievarian said:

Hola Julio,

I had the solenoid removed from the valve body, so the ECU was still seing it as the original one. But afther about 30km, the MIL came on with error about insufficient EGR flow... Maybe it's due to what Euro Specs my car complies to, vs yours ? What is your engine ECU ? Mine is Magnetti Marelli 6F3...

Regards, Bernie

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Salut Bernie,

Mine is the same as yours, I made more than 100km (go to work and back, my work is more than 48km from home) and no problems, only intermitent error "EGR locked" due to high temps but no warning pop-up on dashboard. What did you do? If you just remove it, after 2 or 3 startups will pop-up a warning, if you use a relay like me, it should not pop-up anything.

I think that Eurospecs is not the problem, or EGR model or ECU, or engine size, or year, because most of new Fiat models are using same pieces from old ones (My car is full of pieces from different models, years, and versions).

My ECU when I am using ALFAOBD:


And the error on ECU due to high temp.
is this one:


Even with this error that says permanent but it is intermitent, it should work with 0 warnings.

If you are doing the same as I, it should work without problems, or maybe is your relay, or relay specs is less that you must use.

I request for an sample unit at an AliExpress store because store where I bought mine is not available anymore, so I will post the URL of the product that works 100% maybe if everything is fine. Also, when the other issue (EGR locker error) will be solved, I will explain how to solve it.

Regards,
Julio.

Bernievarian said:

Hola Julio,

I had the solenoid removed from the valve body, so the ECU was still seing it as the original one. But afther about 30km, the MIL came on with error about insufficient EGR flow... Maybe it's due to what Euro Specs my car complies to, vs yours ? What is your engine ECU ? Mine is Magnetti Marelli 6F3...

Regards, Bernie

Click to expand...

Salut Bernie,

After a bunch of kilometers (more than 200km) the system showed a warning message due to EGR locked. As soon as it appeared, I opened the hood and I touch the relay and it was a mid-high hot over air filter box, and wires were hot as hell, so might be the issue, because when engine is cold or warm no problems are reported by ECU until you get high speeds and get engine hot. Another idea is that relay is giving high feedback to system when relay turns off (something silly, because EGR is similar and it might give same problem) so I can try to install a diode to solve that. Another solution is to install the system close to unused air intake hole at front of hood, for bringing fresh air when driving.

Multiple things might be doing fail this idea, I will check it this week-end if it is possible for me.

Regards,
Julio.

Hola Julio,

on my 1.3 mjt 90 I just removed the EGR solenoid and left it wired so the ECU wasn't aware of anything (there is no feedback about the valve position). The car ran just fine like this, but after a while the ECU somehow detected a missmatch between the expected air flow and the actual one : when EGR is activated, there is LESS fresh air sucked in since some exhaust gases are diverted to the intake manifold. Need to MES-clear the error to get the MIL off...

It happend almost exactly at the same time on a (repeated) typical journey: 'bout 15km one way, 2 - 3 hours break, then at half way back the MIL went ON. I did another totally different journey; 180 km with a one hour break at 90, mixed highway/city/county side and that time no MIL popped-up !! Any brilliant idea (beside remap) ?

BTW to fool the ECU you just have to replace the solenoid by a same value resistance, but be carefull about the power it will dissipate !! Under 12V, a 12 ohm allows 1A current, so 12 watts will be dissipated (I know YOU know that, but others might be interested...)

Regards, Bernie

Bernievarian said:

The car ran just fine like this, but after a while the ECU somehow detected a missmatch between the expected air flow and the actual one

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Hi Bernie,

In this situation does the car go into limp mode or does it just flash up the engine management light?

mattyo said:

Hi Bernie,

In this situation does the car go into limp mode or does it just flash up the engine management light?

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In that case just flash up engine management light, no effects detected when driving, keep working like without warning

Bernievarian said:

Hola Julio,

on my 1.3 mjt 90 I just removed the EGR solenoid and left it wired so the ECU wasn't aware of anything (there is no feedback about the valve position). The car ran just fine like this, but after a while the ECU somehow detected a missmatch between the expected air flow and the actual one : when EGR is activated, there is LESS fresh air sucked in since some exhaust gases are diverted to the intake manifold. Need to MES-clear the error to get the MIL off...

It happend almost exactly at the same time on a (repeated) typical journey: 'bout 15km one way, 2 - 3 hours break, then at half way back the MIL went ON. I did another totally different journey; 180 km with a one hour break at 90, mixed highway/city/county side and that time no MIL popped-up !! Any brilliant idea (beside remap) ?

BTW to fool the ECU you just have to replace the solenoid by a same value resistance, but be carefull about the power it will dissipate !! Under 12V, a 12 ohm allows 1A current, so 12 watts will be dissipated (I know YOU know that, but others might be interested...)

Regards, Bernie

Click to expand...

Salut Bernie,
In my case says that is locked, but in that case, there is a bunch couple of ideas we can try:
-Check air filter and replace/clean it
-Check air pipe and clean it
-Check and clean mainfold

But your case looks weird, can you attached the error on your diagnosis APP? What APP are you using? Can you send me an attached photo from AlfaOBD or MultiECU Scan?

Regards,
Julio.