No. I obviously meant 2:1 boost to exhaust pressure ratio, since I was talking about how boost is always higher than exhaust pressure under load. I have never had it happen either, but it is well within the range of possibility when one starts hopping up the tune, as many PowerStroke, Duramax and Cummins owners have found out after installing high power chips or tunes.

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Manure green 2005 CRD sport4x4, GDE Hot tune, Cat Gut, OE skids, Draw tight hitch, Duramax lift pump, 160K on multiple varieties of fuel, XM radio, Escort live with Redline, fog light mod, GPS, Icom IC7000 all band radio call sign KC9QPF, Grabber AT2s on Soft 8s, FIA grill blanket.

inmotion said they couldn't turn off the egr 100% without a cel. They could get up to 80-85% without throwing a code. Maybe they are doing the same as inmotion can do? Not sure. I talked to him on the phone a while back and don't really remember. You don't really need much surge protection. Many older diesels didn't have much protection and lasted 300k+ miles.

I think gmctd talked to inmotion about the same thing. Maybe he can remember more than I can. I remember reading about it (from gmctd) shortly after I spoke to inmotion about it.

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2005 Liberty CRD
235/75R16 Firestone Destination's, Fumoto Valve
Boiler's Aluminum Roof Rack

The difference might be how InMotion treated the EGR problem versus GDE's approach. If IM just tried the same thing as on the VW system, reducing the EGR duty cycle in the computer, then I can see how going below a 15% cycle would toss a CEL, IF they didn't also change the expected values for the airflow.

On the VW with vag-com, we have the ability (or did anyway) to dial back to what the computer *said* was a 4% duty cycle. But even then, it would still toss a CEL every once in a blue moon. I had my VW set to the 4%, but I also had a "racepipe" on it which replaced both the actual EGR AND their version of the FCV. The EGR outlet on the manifold was bolted shut with a plate. I got the CEL every once in a long while b/c it was still looking for that reduction in airflow, and if I left it in whatever that operating condition for long, it would get angry that it wasn't seeing that dip in flow across the MAF.

On our CRDs, GDE has said that they changed the expected ranges to infinite. So if the normal airflow is 500 liters / minute (just a fake number for this) and if the STOCK expected value across the MAF during EGR is 250-300... Then they changed it to 250-10,000 liters / minute and the system would NEVER toss a CEL for "insufficient flow" b/c it would be within the expected range. I don't believe IM changed this, b/c this is a VERY fast way to completely eliminate the EGR. With the expected EGR values altered to the same or larger range than the normal flow... Unless there was another verification system (like some resistance change on an electric valve) the system wouldn't know if you simply REMOVED the EGR completely and welded the hole shut.

Of course, for every genius idea like this, the EPA is equally looking for a way to counter it and restore their nanny-car vision of the universe. They are probably FULLY in support of this new insane idea that the banks be given a remote disabling device for any vehicle they have a loan on... Miss a payment, and the car shuts down. I REALLY WISH I was kidding about this too. It doesn't exist yet, but I've been hearing this idea floating in the news more and more recently. I will NEVER own a car with this sillyness, that is all I can say. The stupidity of the EPA and their new piss-tank-level-gauge-that-disables-the-engine system is bad enough. Thats why I won't own a newer diesel with Bluetec EVER unless TurboTim finds a way to kill that system too.

Tim, you are my hero.

Thanks.

I love all you guys.....

it is already being done...my friend has a shop and had a no start issue on a paid off vehicle... guess what they had to take out.....

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Trevor

'05 Limited CRD Inferno Red Pearl Coat
Home made provent installed @ 35443, SEGR installed @ 35466, Fumoto valve @ 37500, trans and transfer case skid, In tank pump installed @ 43500, Suncoast TC & Transgo Shift Kit @ 44730, EGT, Boost, Trans temp gauges, Samco hoses, Rebuilt Trans w/ HD454RFE kit @ 56K, Inmotion Stage 2 @ 56K

I want to hear more about this one.
So far the talk with OBD3 and such has not been finalized on crap like this (that I know of).
PM me or ??.
There is a way around this very easily.

I want to know more too. I just found out from another source what you posted - that they do exist, but the news article said they were only being used on the buy-here-pay-here kinda sales for the people least able to get a standard car loan.

In this economy, that will be a LOT more people. I'd like to know more about these devices too.

not sure of all the details.. but when the company bought the truck
i don't know who forced or who agreed to this box being put in the vehicle...
but it was a hack job.. wires every where... my friend was trying to trace
wires to see what they did and where they went...they all led to a box that
was a bit bigger than a deck of cards with an antenna on it... ripped it out
connected the correct wires back together and all was well..

it was on the drivers side by the steering column and it was a mess in there..
a 4 year old could have made it look neater and hid it better so as it couldn't
be found... if ya have one you can do a bit of probing and find it and take the
thing out...

i would imagine if there is one in the car the purchaser would have to know
about it being in the vehicle... the thing with this one though is that the truck
had been paid off for a few years then all of the sudden it wouldn't start like i
said and the box was the culprit... maybe it is another way to get a truck in
for service long after it has been paid off

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Trevor

'05 Limited CRD Inferno Red Pearl Coat
Home made provent installed @ 35443, SEGR installed @ 35466, Fumoto valve @ 37500, trans and transfer case skid, In tank pump installed @ 43500, Suncoast TC & Transgo Shift Kit @ 44730, EGT, Boost, Trans temp gauges, Samco hoses, Rebuilt Trans w/ HD454RFE kit @ 56K, Inmotion Stage 2 @ 56K

For many years now, GM has on the higher-end vehicles (Corvette, etc) has a little data recorder, just above the radio. They have stated that it is only for gathering data for warrantee and crash info. It will NEVER be used against the owner/driver.

Well guess what happened here in Phoenix a few years back. Seems like Father O’Brian was driving along at night, hit something and then reported it later. They confiscated his car as it turned out to be a Hit-and-Run crime. GM downloaded the data recorder and gave this info to the prosecuting attorney. They then used info from the box that would NEVER be used against anyone, and prosecuted this guy!

Seems like a lot of little boxes ended up getting ripped out of cars after that.
I too will not tolerate that. Some say that it could end up protecting me but I’ll take my chances that they will use it against me first.

Haven’t found one yet on the CRD. They are getting pretty popular on newer cars. Be Ware!!