can someone post some info on this for me, did a search and nothing for the 4g on here.. is it worth it as i am not worried about the cold as i am in florida...and if so how to do so....

Thanks in advance


any news on the JnR ecu?

 

I'm sure the coolant is for keeping your car from over heating as well. Why would you bypass it?

 

coolant bypass is in regards to stop it from going in to your throttle body, they do that in case cold ass weather etc.... i think that is just looping it before the throttle body.. more interested in if anyone ever did a EGR delete our cars and if it made any difference..

 

since we have the same general engine, the Jseries...
I'll chime in.

you are right, Senile. the Coolant is looped to the throttle body specifically for cold winters. in theory the butterfly in the TB will get frozen stuck. but you're in Florida and that doesnt seem likely.

on the 3G TL, the IAT sensor is sitting right on the throttle body.
this warm coolant runs through heating up the IAT and causing the ECU to think its warmer outside.
I have done the Coolant bypass mod. while it doesnt add horsepower or free up hp, it does keep the IAT cool!

on the 3rd gen side, we've also deleted the EGR with a plate.
this does throw a CEL and cannot be tricked. meaning resistors wont trick it. I plan to do this. Frees up 3-5 hp.

a step further would be deleting the PCV and adding an oil catch can

 

I'm also pondering what to do about the EGR since I'm modding exhaust on my 2010 ZDX now (J series motor also).

There is little info out there but some people told me that simply blocking the EGR valve may lead to unstable engine operation, as well as deleting front cats (what I plan to do) without touching the EGR.

Any thoughts?

 

^negative.

you can find the EGR block off plates on ebay, for like 10-17 dollars.
its pretty cheap to TEST.

I say test, because it might not be in favor to you. but what the heck,its only 17 dollars and you can put the EGR back on, if you choose.



I have the RV6 V3 PCD's(Pre-cat deletes) for my 2006 TL.
you might want to check out what Richie is doing for the ZDX.
http://rv6-performance.com/

his contact information is there(email and phone)

 

Richie is still in the process of making the J-pipe for MDX which will also fit the ZDX, waiting for it as well

 

Wouldn't just unplugging the egr do the same thing as blocking it off? The egr is normally closed, so disconnecting the connector would keep it closed.... ?

 

The EGR system has feedback sensor on it (based on the electrical diagrams I have). Unplugging it would definitely throw codes. Why not block it off, but leave the valve plugged in? I don't know how it'd detect if there wasn't flow..

 

I didn't know modern engines still have EGR valves. Do hondas/acuras have an air pump as well?

 

Blocking it off would still set a code, p0401 egr insufficient flow??

 

if I get it right (didn't dig deep yet) the EGR block plate replaces the valve itself so it will be disconnected either way

based on some civic owners reports the "check engine" comes up after a time and not always

I got the EGR block plate and may try it some time soon but apparently we'll need a tuned ECU if we go that far. I know some ECU's have an option of "EGR off" but no idea how it works out in reality

 

wonder if JNR's ecu will have this option

 

^as of right now, no.

people with the J&R and blocked off EGR still get the CEL

 

Hondata Flashpro ECU has this option
i thought about other ways to trick EGR like connecting the pipe leading to EGR valve straight to intake manifold instead of exhaust pipe, so EGR would take clean air instead of exhaust, but this could interfere with fuel maps and cause troubles for the engine

so I guess the only good way to get rid of the EGR is tuned ECU

 

^^^^^

But Hondata has nothing available for the J-series V6 engine family. So there is currently no permanently solution to bypass the EGR for the TL sedans without setting off the engine warning light as well as throwing out trouble codes.

 

^exactly!

 

I guess I found the EGR workaround
http://www..net/forums/7th-generatio...e-bye-egr.html
trying to register on that forum to get in touch with that dude. seems like he's selling these EGR tricks

 

I blocked the EGR off on a J32A2 ground up rebuild I did a few years ago. The results aren't worth the effort.

The coolant bypass trick goes back for years on Hondas. You've got a coolant line that runs into the TB and a coolant line that runs out. Basically, you just take a longer piece of hose and skip the throttle body. The logic here is better continual HP through reduced heat soak. Again - you're not going to notice any gains unless you're dyno racing or tracking the car competitively.

If you want cheap power on this motor, go get a set of the magnaflows and have them welded in with your stock tips. Should be less than a $250 investment - and you'll feel (and hear) the power.

 

can you disable egr code with ktuner? how eaxctly does removing egr valve free up power? thanks

 

 

Ktuner does.

 

you dont want to block EGR, it cools valves. There will be no gains.
Other engine manufactures have variable valve timing lift on exhaust side. This way they can program more cooling for exhaust valves So no EGR needed.