Ok i am exited.No more CEL or fluttering sound with making two holes into exhaust blocking plate :fistpump:

i have to cover more miles and could not hear clearly as kids were in car with me.
others may try and confirm.
the hole i made by driving a nail into metal plate.
so i think this is the minimal threshold EGR flow to keep things Ok.
you may feel some strange throttle responses or idle fluctuations after ECU reset when removing the -ve terminal of battery.this is normal as ECU learns it patterns.
i have to travel on highway on weekend.so best test will be there.

 

if you would mount a metal flange on both holes, and put the egrhead loose in open air, would it also say CEL?

 

i have not tried that.but belive me EGR is so heavy.it will fall breaking the clip of harness to which it is attached.and as the sensor wll not sense any exhaust gas flow so i think CEL will come.

 

All this trouble, to gain what exactly?

 

Read somewhere that deleting EGR, actually decreases MPG, because since it doesn't have recirculation gas, the throttle body will need to open more often to produce the same amount of power, resulting in worse MPG.

Hence my question....why remove the EGR?

 

Cleaner intake/cylinders. More power at the cost of MPGs due to a higher ratio of cool to warm air in the intake. Removal of yet another part that can break.

AFAIK, that'll need to be tuned out, however, unless we can get some fancy cheater circuits installed.

 

Makes Sense.

Although shouldn't that make it loose power at full throttle?

as with EGR you have Recirculation + 100% open Throttle amount
while without EGR you dont have the recirculation air.

Until it's tested not sure how relevant this mod will be :\,
Might not need a tuning, if it's a small amount the ECU should adapt to the new air values

 

Don’t Block or Remove the EGR Valve, It’s Saving You Money | Tuner University

nice blog. very technical and well explained. planning on reading more of their posts :thumbsup:

 

Neat that it doesn't affect power negatively. Definitely should have a catch can installed for the other reasons I listed though, in my opinion. Very low on my list of priorities though.

I mentioned tuning it out as it is a part of the emissions equipment and with a CEL for it you will fail.

 

i did it because i intend to intsall Sprintex SC.so i don't want hot exhaust gases into my intake to make it hotter due to boosted non intercooled setup.
its easy.now i know whats the threshold.its just 5 min job. Once i get SC installed i will measure the intake temp before and after it to see if it made any differnce.
i did not do it for power gains.i throughly searched web and already saw the aricle you mentioned.
the temerature in my city is 110-120 deg F. So you can imagine how much heat is under hood.
LOL talk about adding those hot exhaust gases back into intake....
so now i have explained my point,i am open to valued advice of experienced memebrrs here

 

Another thing witch was bothering some members and giving problems to the sprintex SC over fitfreak community.there was theory of EGR being flowing in wrong direction in supercharger setup as the pressure in intake is more.so instead of exhaust gases pouring in,there may be boost leak through this valve into exhaust.
although a total block of EGR will require some ECU flash/piggy back which will be expensive

 

I know EGR's are deleted on Diesel cars, because their fuel is actually dirtier, so avoiding those exhaust recirculating, makes sense.

The Sprintex kit, is made and intended for EGR setup, so if there was any problem regarding those Recirculating temperatures, they would probably tell you to remove the EGR.

And recirculated or not, the air will be hottest when it's compressed i think, the bigger effect would be if the air was cooled after beeing compressed, rather than beeing cooled only before it is compressed. Sure there might be a small difference but, again i'm scepthical about the relevance.

I'll wait for road tests to provide hard on data, when you can.

 

I know EGR's are deleted on Diesel cars, because their fuel is actually dirtier, so avoiding those exhaust recirculating, makes sense.


I'll wait for road tests to provide hard on data, when you can.

did it on my diesel too, but kept having problems.
i also wait for hard data, because i dont believe this will make the car different. its a small tube, and the reason seems legit.

 

yup i am driving to another city tomorow near 200Km drive.i will post about any MPG drop or gain.my Average on long route is near 16-17 km/L at speed 110-120 Km/L i.e 40MPG (US)/48Mpg(Uk).

 

He has a good writing style that's not overly technical and has a (not too) dry humor that most gear heads would appreciate. I remember reading the article on the high pressure radiator cap prior to purchasing mine.

 

The practical results Part 1

Hi guys, i have completed the one side of my 400km higway journy.Here are the results which made me think to revert back the EGR valve as it was before
as the weather was pleasant so most of trip is without AC.just may be 10Km with AC.
I travel same ruote every weekend for my job,my rutine fuel average is B/W 16-17KM/L with AC.
1st of all in the city car gives me average of near 22km\L,so in start of journey my average was 20 when i left bounds of city and was on highway.after 58 Km the average was near 15.7km\L at this time the CEL also came
So at this point we assume that the EGR valve was completely closed as ECU was not opening it after throwing the CEL.(so those tiny hole i made in the oval plate were not providing any exhaust gas to intake.)
The temperature outside was 29ºC

Soon the rain started and outside temerature dropped to 22ºC.and the fuel average got worsen by cold waether!.may be bacuase colder air is difficult to ignite.
after 92 Km average dropped to 14.7! despite that the speed was near 100-110.so it should have been higher..

after 145 Km it was 13.9 km/L.i really started to miss my EGR at this time :think:

at end of journy it was 14.1Km/L as the end 35 KMs are not highway and there the speed is B/W 60-90Km/H.

Ok i admitt i have never seen such a worse MPG and that even without AC !
so i have reverted back every thing to normal.in 2 days i will go back home.same journy with EGR valve as OEM. i will post results again with normal EGR.

With average of 14.1Petrol used 196.4 Km/14.1=13.92 Liters
With avergae of 17 petrol used 196.4/17=11.55 Liters
so difference is 2.3Liters on a single trip.LOL that EGR is saving a lot of fuel.imagine this difference at 10,000 miles and more.
I will report again after my journy back with normal EGR

 

Soon the rain started and outside temerature dropped to 22ºC.and the fuel average got worsen by cold waether!.may be bacuase colder air is difficult to ignite.

euh, colder air is usually better. that why most tuners look for a cold air intake, or at least search to tear more cold air in the place where the airintake is positioned.

more moisture because of the rain might make a difference maybe(not sure abut it).

 

Thumbs up for having the balls to go through with it.
And even more to share the results.

Glad you are going back to EGR. Just make sure everything is properly put back together.

 

yup this thing was bothering me.now i have piece of mind.the trouble was worth it.i also noted that EGR opens with very light foot accelation and on low RPMs .i.e.1200-1500 RPM,but may be different of others coz mine is cvt.so now i am relieved that it will not trouble my SC,becasue when SC will be making boost EGR will be close at that time.

 

wtf is that gauge cluster? thanks for the experiment and the results, that's really great that you gave us all the info afterwards!

 

Must be a Honda Fit RS Hybrid. Nice.

 

Final verdict

2nd part 190 Kms with EGR.
Ok guys same distance back home,on same fuel,without AC as weather was again nice and cool. As expected the average with EGR was more.

Journy started.in city giving 22.4Km/L

After 43 Km highway started.Avergae of 20 Km/L at that time.

On highway at 113Kms Av of 16.2

End of journy 190.2 Km with Av 16.1



With EGR fuel used=190.2/16.1=11.93Liters
Without EGR 196/14.1=13.90 Liters

So it saved me 2 liters petrol on just 190 Km distance.so it will be 1 gallon of fuel saved on near 350 KMs travel.!
As 1 US Gallon=3.79 L

Do note that on highway speeds the RPM is usually above 2000 RPM so less help from EGR.but in city it should matter more.but still the difference is obvious.

And i think my average will be much nice when i get new short ram intake because my airfilter is dirty. Its oil based disposable one and here it costs 45$. its not even 5000 miles and look at this thing.

so i ordered SRI with K&N filter. Atleast that will be washable and reusable


@ITEM9:Yup its a Fit Hybrid RS JDM

@ITEM9: Yes it is Fit Hybrid RS JDM

 

2

so i ordered SRI with K&N filter. Atleast that will be washable and reusable

you might go for some kind of prefilter when it's that dirty after few miles. my filter usually looks like that after 30000km/20000miles.

 

that is an awesome looking fit. with the IMA and the utility, I may have gone for one of those over the 'z if they were available here! I'm not crazy right, that rear bumper definitely looks different (better imo) than the usdm non-hybrid fit?

thanks yet again for the comparison

 

that us fit is not deliverable in europe i thought. in europe most fits are only 1.2 or max 1.4, but all with pretty low horsepower. too bad. but i prefere the crz anyway

 

I bought a K&N prefilter 'sock' for my previous SRI. I live on a dirt road, and I highly recommend the prefilter as well. It's also 'splashproof' so it's easy to clean and keeps water from soaking the filter unless you submerge it. $20 kept me lazy and happy, over 20k miles without needing to clean it as the filter itself was pristine and the sock was just dusted a bit. And then all it would have needed was a quick spray or gentle brushing with a microfiber cloth.

lastly the black of the sock kinda mutes the look of the filter in your engine bay - no shiny metal and bright red anymore

Definitely an improvement from my changing filters like yours every 25000k miles (they were that dirty much, much sooner lol).

 

Thanks for the filter advice.and my Fit has same engine as CRZ,LEA-ZF1,that why i shared the experience on crz forum instead of Fit forum. Budget really tight as i am about to order Sprintex SC kit.i hope it fits into its short nose

becasue i see many CRZ guys complaining about it touching their hoods

 

good luck with that kit, keep us posted ;-)