Bypassing the EGR?

[Jarrett]

Never been to Texas have you?

Also, just to clear up a misconception stated in the beginning of this thread, an EGR valve does not circulate exhaust back into the combustion chamber to be reburned. The gases recirculated are inert(they don't burn). It theoretically cools off the combustion chamber in addition to partially filling it so less fuel has to be sent to the engine. So, less fuel consumption=more gas mileage. But, it isn't on at idle, under acceleration, or WOT.

[Granite CB7]

Never been to Texas have you?

No, never, but that's the closest, most commonly known shape to describe it, it sorta does "resemble" Texas though in a small way unless I'm totally wrong

[project93accord]

Just curious about something...where does the lines go when you block these plates? also don't you get a code thrown when they are not plugged in? My dash looks like a Christmas Tree any how cuz my aftermarket taillights throws the brakelamp light...my ABS brain shit the bed so its unplugged and the light is on...and the most annoying light of them all SEAT BELTS...lmao

[Granite CB7]

Just curious about something...where does the lines go when you block these plates? also don't you get a code thrown when they are not plugged in? My dash looks like a Christmas Tree any how cuz my aftermarket taillights throws the brakelamp light...my ABS brain shit the bed so its unplugged and the light is on...and the most annoying light of them all SEAT BELTS...lmao

Well, if you just unplug the EGR valve, you'll throw a code in about 5 mins w/ the stock PT3 or PT6 ecu. You'd have to get an ecu the doesn't look for EGR like the P06, for example. My EGR valve is way down by the rear crossmember, but is still hooked up and everything.

[project93accord]

so make the block off plate and just bolt it in place with the egr valve to by pass it...i live in the land of the cold ass winter so the other block off is out of the question...lol

thanks

[v4lu3s]

you can also leave the egr valve and lines all plugged in and hang it out of the way. don't get excited about crazy gains in power bypassing the egr though, after all unless it is stuck open it doesnt hurt performance at all.

[Bluejayde]

better off using something like an 8th inch thick. plus it looks better.

I used two layers of root beer can. The next time I took it off the gases had blown a hole through the middle. Use REAL metal.

[wed3k]

if i only had time to mass produce these in metals shop
retail jobs suck

[HondaFan81]

Anyone get spark knock from the blocked EGR? I heard that the O2 sensor reads off it and it could lean out the fuel mixture if it's blocked off?

Any adjustments need made on ignition timing as well?

Any input?

[v4lu3s]

take a look at a p13 timing map, specially in the regions when the egr would be active. its a LOT of advanced timing.

[HondaFan81]

take a look at a p13 timing map, specially in the regions when the egr would be active. its a LOT of advanced timing.

In other words, it's better to just clean the EGR passages/ports and reinstall it in operating manner. That what you mean Willie? I got these questions from talking with my mechanic friend at work and it made sense what he was saying, so it pondered me to why people do this block-off.

[93accordexcoupe]

dan ill be talking to u for a long time at the uconn meet ill pay u if u make me one of those plates too

[HondaFan81]

I just don't like the idea of recirculating burnt gases back into my intact tract to carbon crap up, so that it over time restricts my air flow. Well, on my red project I will keep it since it will retain stock-like compression. However, on my white project I think I'll look into it further when I get to that point. But I would like to block it off, but do it properly. I am going chipped ECU so perhaps in coordination with that, I can work something out.

[v4lu3s]

using a computer that is designed to use the egr system, onc that at this time cannot disable it, and then going and physically disabling the system means that to do it right you would reprogram your timing maps and fuel maps to reflect that the engine is no longer operating teh way it was designed. if recirculatd exhaust gases allow for a cooler chamber, reduced NoX emissions, reduced fuel usage, knock reduction, then what the timing maps show me is that honda advanced the hell out of the timing when the egr is supposed to be open.
Just because you cannot hear knock does not mean its not occurring. Part of me suspects that faulty or bypassed egr systems are a possible causer of broken ringlands that are fairly common in h22 engines.

My feeling is that disabling the egr system is done as cheap ass method of avoiding fixing it in many cases. I twill NEVER rob your car of power if it works right.
If it is being removed/bypassed in the name of performance than my feeling is not just remove it, also change to a non egr computer. That way you reduce all risk of part throttle detonation/heat damage.

[rickyduckworth]

i removed mine a few years ago simply to get it out of the way and to avoid replacing it...........not a performance reason though......i was running a chipped p28 that was programmed to work like this though.......