saweet! paul you are having too much fun with that milling machine. lol
my car is going to need this. my CEL has been on for a while because of my EGR.

 

So what all needs to be done to install this?

 

Pull the two stock studs that hold the egr valve on and replace them with longer bolts.

 

Any difference in power feel? I think this would be very beneficial to us with FI.

Keep on innovating Paul!

 

:woot: Nate and I were just talking about this the other day.

 

nice

 

And what does the PCM do when it notices that the exhaust gas temp is way too high? It's probably going to pull timing which decreases power, right?

 

It does not mesure exhaust temp, and how would not ingesting hot exhaust gases cause higher exhaust temps?????

 

There's no EGT sensor on these cars? I didn't know that.

EGR lowers the combustion temperature. I believe this is because the exhaust gas can absorb greater specific heat. EGR also tends to make the engine more efficient because it allows advanced timing (lower temp = less preignition tendency) and less throttle loss (less power available at part throttle = higher throttle angle).

Isn't the EGR turned off at full engine load anyway? I've never done anything with a Honda engine at work, but all the GM/Chrysler/Ford engines have zero EGR flow at anything above like 90% throttle.

edit - I understand what you're trying to do, but it doesnt really work on modern cars with modern electronics and variable EGR. The EGR is off at full throttle so it only 'robs' power at part throttle, which in turn actually (and counterintuitively) makes the engine more efficient (better gas mileage). So unless you're a part throttle racer unconcerned with fuel economy, EGR is one of those things that does very little harm aside from a little more carbon deposits upstream of the cylinders. EGR does take a lot of power out of diesels and older gasoline engines, but in the modern ones it really makes no difference. I appreciate you trying to do new stuff and you've done a lot of bad ass things on the J series, but IMO this does more harm than good. However, if Honda uses the EGR at full throttle (unlike every other gasoline engine I've ever tested/instrumented), this is all wrong.

 

Isn't the EGR turned off at full engine load anyway? I've never done anything with a Honda engine at work, but all the GM/Chrysler/Ford engines have zero EGR flow at anything above like 90% throttle.

yes, the EGR is off at both idle/WOT on these cars. the bypass paul has machined WILL allow for smoother (not higher) power delivery though midrange throttle %, but like you mentioned, it will be useless at WOT.

 

wow, finally. Ive been wanting to eliminate or some how modify the EGR for a while now. Nice work Paul!

 

wow paul u r the best... what all is needed to get this done?

 

wow paul u r the best... What all is needed to get this done?

really wat do wee need to do for this ..? Gain hp or decrease ?

 

so with this, the exhaust gases still get recylced but never make it into the intake manifold, only fresh air does? If i am correct here with my intrepretation of this, where do the recylced gases now go? If i'm way off please tell me.

Also, i too was under the impression that no exhaust gasses get recylced during full throttle? is that true?

 

There are no more recycled exhaust gases, they are blocked from re-entering the engine, the cooling/leaning effect of EGR is maintained, this just uses clean/cool intake air rather than exhaust gases.

This also has another effect, I have had several builds/repairs come about due to front pre-cat failure (Stevo405 amoung others), pieces of the collapsed front pre-cat would be sucked back into the engine thru the EGR system and I am sure you can imagine what running hard pieces of ceramic material thru the engine will do......

 

EGR =/ DEI

http://www.autoblog.com/2007/11/16/asinine-engineering-direct-exhaust-injection/

 

Nice work Paul. What do I need to do to get you one for me? I have two extra EGR valves....

Also, we need to discuss the J37 or whatever the current popular/good build is... I've got the itch...

Car runs amazing, by the way... constant 37 mpg now. Love it.

 

Great, I figured you would eng up just a little shy of J36/J35 MPGs, give me a call and we can discuss Stage 2...

 

can u get me one for the k24 prettty please

 

Yes, just make sure I know it is for a K, the hose nipple has to be machined in a different location.

 

lol at DEI

 

paul make another i want one just let me know via PM.

 

ummm...I need that lets test that on my car :up:

 

LOL, I knew you were going to say that.

 

Great job to NVA-AV6 and Chris :up2:

 

Can I buy one.. lol

 

Yes, and I know I still have to pull out that cam and make the jig for machining a CL-S one for you...

 

wooot something for the 6th gen too!

 

x2

 

I will make these avalible to whoever wants one, the cost will be $100 shipped which will include new correct legnth bolts and new EGR valve gaskets. The inlet will be 1/2" hose mipple so you can connect it with eaither a simple breather element or route a hose to the intake. I will pull together a step by step when I install one on Kai's car this Satruday. The hardest part of the install will be removing the existing studs, you have to take the two nuts and lock them against each other on the stud by tightening them against each other and then trun them out like bolts. Anyone interested please PM me.

 

^ hope this helps :up:

 

Cool idea, I see the pros and cons of it but I wish it was a tad cheaper, especially for us broke college students =/

 

Don't you have a baller J32 swap? lol

 

^What would a tad cheaper be?

 

Hey Paul, wasn't this one of the codes currently thrown on my car?

 

Not that I remeber, but we will have to see Friday when you get here....