250-300 km per tank :(

[Mugen_Euro]

hey all i have a 03 accord euro... and its F@#&ED
filling up on 98 and still getting bad milage, im not goin rev crazy any more infact im trying to be conservative getting in to highest gear asap... and shifting at 2.5 - 3k...
problem started when i got my CAI system put in.... and was somewhat bad before then also when i just had a apexi pod filter in...
ive checked all the connections in the piping, it all looks fine... cant hear any leaks either
I reset the ecu by disconnecting the car battery neg terminal and leaving it overnight then re ataching it and letting it idle for 30 mins... this restores fuel efficiency for a day... then it returns to high consumption....
any ideas as to what the problem may be?

[euro1603]

sorry i don't have an answer to your question, but i also have noticed since installing my cai also with a apexi pod filter mileage is definately has not been as good as having the stock intake on. but 300km on a full tank that is very bad.. i drive auto and have driving all week without reving above 3k and i can't get under 11l/100km but i do get stuck in traffic allot.. so i guess thats the reason. its going to be a pain in the ass but i guess you may have to install your OEM intake and see if it is still the same problem.. good luck..

[Mugen_Euro]

yer thats what i was thinking :(

[Chapman2233]

Yea, try the stock intake and see if it makes a difference first.

I get 150km on $20 bucks on my 3rd gen lude.

[djpro1]

Whens the last time you went for a tune up? After installing an INJEN CAI, I had to get a tune up done since my RPM idle went down low. Not sure if it had to do with my fuel efficiency though. 300km seems really low... I usually get at least 500 a tank

[Mugen_Euro]

Yea, try the stock intake and see if it makes a difference first.

I get 150km on $20 bucks on my 3rd gen lude.

id kill to get that kinda efficency.... i filled up 35 bucks two days ago which was about 23littres of 98 my petrol gauge said i had half a tank and now 90km later im down to less than a quarter although i drove mt dande after i filled up... but still my mate went as hard as me in his sp23 and only droped a bar on his dial i lost a quarter of a tank...

[grifty]

does ur car smell like its running rich? like can you smell petrol coming out of your exhaust when your car is at normal operating temperature (you can only check this if your standing behind the exhaust)?.

[Mugen_Euro]

come to think of it it used to smell kinda bad wen i first got the car, u kno how the catalytic converter makes the gasses smell bad n stuff, now it kinda smells wierd like burning sorta iono...

[aaronng]

sorry i don't have an answer to your question, but i also have noticed since installing my cai also with a apexi pod filter mileage is definately has not been as good as having the stock intake on. but 300km on a full tank that is very bad.. i drive auto and have driving all week without reving above 3k and i can't get under 11l/100km but i do get stuck in traffic allot.. so i guess thats the reason. its going to be a pain in the ass but i guess you may have to install your OEM intake and see if it is still the same problem.. good luck..
That 11L/100km is consistent with driving in heavy traffic. 10L/100km is if you drive with minimal traffic in the suburbs, 7L/100km if you drive pure freeway at 100-110km/h and a combined freeway and suburb driving gives me 8.5-9.0L/100km.


Whens the last time you went for a tune up? After installing an INJEN CAI, I had to get a tune up done since my RPM idle went down low. Not sure if it had to do with my fuel efficiency though. 300km seems really low... I usually get at least 500 a tank
Uh, what is a tune up? What is there to tune on a stock ECU?


come to think of it it used to smell kinda bad wen i first got the car, u kno how the catalytic converter makes the gasses smell bad n stuff, now it kinda smells wierd like burning sorta iono...
Yeah, I'd look out for this since O2 sensors can and do fail which causes the smokey smell out the exhaust without throwing a CEL.

[jyh888]

When you install an aftermarket intake it disrupts the original air to fuel ratio. In this case the large increase amount of air coming into the car would probably throw the ratio off and hence your car will be dumping excess fuel which is why you get that weird smell behind your exhaust and as a result will affect your efficieny i.e. mileage. Usually, after a while the ecu will learn to adjust itself. Otherwise, check your air-fuel ratios and if you plan to keep modifying your car (i.e. exhuast manifold + exhaust) definately invest in a piggyback ecu so you can tune your car to suit those mods to maximise both efficiency and performance.

[Mugen_Euro]

When you install an aftermarket intake it disrupts the original air to fuel ratio. In this case the large increase amount of air coming into the car would probably throw the ratio off and hence your car will be dumping excess fuel which is why you get that weird smell behind your exhaust and as a result will affect your efficieny i.e. mileage. Usually, after a while the ecu will learn to adjust itself. Otherwise, check your air-fuel ratios and if you plan to keep modifying your car (i.e. exhuast manifold + exhaust) definately invest in a piggyback ecu so you can tune your car to suit those mods to maximise both efficiency and performance.

Yer i know what you mean. But as i said i reset the ecu so that the car would readjust air fuel ratio and it improves petrol consumption for a day but it inevitably returns to its bad economy. even just letting the car idle for half hour i c the needle drop a good 2 to 3 bars :( which is stupid coz the car idles at like 710-720rpm....
i wont be getting a piggyback ecu any more, i plan on either selling the car or giving it to my mum....

[onlykillzz]

have you played with your spark plugs as i got really bad fuel economy once when i changed to a cooler spark plug accidentally check if your spark plugs are fine.....but it sounds like it could be your o2 sensor..... also your car will run rich if its running low on oil so check that to.... good luck

[felixd]

CHeck spark plugs n check exhaust leaks :)

[power_of_dreams]

oh man that is low

[Mugen_Euro]

have you played with your spark plugs as i got really bad fuel economy once when i changed to a cooler spark plug accidentally check if your spark plugs are fine.....but it sounds like it could be your o2 sensor..... also your car will run rich if its running low on oil so check that to.... good luck
hmmm i was thinking that but i wasn't sure if it was safe to mix oils coz i didn't know what oil the previous owner used :S and he lives in mornington so aint gona go find him an ask lol.
Also random question the old owner had a apexi airflow controller installed in the car, an i know they r rubbish but when i was noob and just got the car i decided to play with it xD. could this be the problem? mind you i have reset my car 3 times since then...?

[tknova]

I rekon aarong is onto it. Sounds like an 02 sensor to me or your intake pipe is bigger that stock.

What CAN happen, is if you have installed a CAI with a larger diameter than the stock intake pipe, this can cause incorrect air/fuel ratio readings. When you fitted the CAI, did you plug in the 02 sensor?

It could also be a faulty 02 sensor as aarong pointed out.

Good luck!

[tknova]

hmmm i was thinking that but i wasn't sure if it was safe to mix oils coz i didn't know what oil the previous owner used :S and he lives in mornington so aint gona go find him an ask lol.
Also random question the old owner had a apexi airflow controller installed in the car, an i know they r rubbish but when i was noob and just got the car i decided to play with it xD. could this be the problem? mind you i have reset my car 3 times since then...?

Very possible that you have lost your map and it's now running super rich.

It's got to be one of 4 things

- The APEXI air fuel controller is not setup correctly
- 02 sensor has failed
- 02 sensor not plugged in
- CAI intake pipe has a larger diameter that stock which is throwing out incorrect readings.

[djpro1]

Very possible that you have lost your map and it's now running super rich.

It's got to be one of 4 things

- The APEXI air fuel controller is not setup correctly
- 02 sensor has failed
- 02 sensor not plugged in
- CAI intake pipe has a larger diameter that stock which is throwing out incorrect readings.

I found that when i installed my CAI, the O2 sensor fitted rather "loosely". Try using some tape to ensure that its fitted well onto the intake pipe. This, along with a "tune" ie. throttle body clean, fuel filter replacement, helped in getting my idle back to the 700-800 rpm range from 550-600 rpm. Consequently, it improved my fuel mileage by a margin so that might be worth looking into first.

[aaronng]

hmmm i was thinking that but i wasn't sure if it was safe to mix oils coz i didn't know what oil the previous owner used :S and he lives in mornington so aint gona go find him an ask lol.
Doesn't matter if you mix oils. Modern engine oils are mixable.



Also random question the old owner had a apexi airflow controller installed in the car, an i know they r rubbish but when i was noob and just got the car i decided to play with it xD. could this be the problem? mind you i have reset my car 3 times since then...?
Holy crap! You didn't mention this. Yes, playing with this piece of crap WILL change your air fuel ratio and cause poor fuel economy. You need to get it set so that it does not run rich.

[Tekkenforce]

omg . im having the same problem as u.
03 euro
installed injen cai and getting bout 300 a full tank-ish..
jeeezus, any ideas guys?

[djpro1]

omg . im having the same problem as u.
03 euro
installed injen cai and getting bout 300 a full tank-ish..
jeeezus, any ideas guys?

Hey I've got an INJEN CAI and mine is also 03.. Thats really odd? Only 300km/ tank... I recently got my throttle body cleaned and the idle RPM up'd a little to its normal range. I think you should definitely get it checked out and I highly doubt it is your CAI unless your O2 sensor is playing up.. But when i installed my INJEN, as mentioned in the previous post I had to get some tape to really get the O2 sensor fixed in position.

[Mugen_Euro]

Doesn't matter if you mix oils. Modern engine oils are mixable.


Holy crap! You didn't mention this. Yes, playing with this piece of crap WILL change your air fuel ratio and cause poor fuel economy. You need to get it set so that it does not run rich.

Um yer but i reset my ecu by disconnecting the negative battery terminal leaving it for a while then reconnecting it and letting it idle for 30 mins. doesn't this reset the ecu and the Air flow controller?
so shouldn't i get the same fuel efficiency i started with?

[Tekkenforce]

i'll check my o2 sensor and clean my throttle body etc and see how that goes.
what other symptoms are there for a screwd o2 sensor?

[aaronng]

Um yer but i reset my ecu by disconnecting the negative battery terminal leaving it for a while then reconnecting it and letting it idle for 30 mins. doesn't this reset the ecu and the Air flow controller?
so shouldn't i get the same fuel efficiency i started with?
It doesn't reset the Apexi VAFC if I remember correctly. The settings should be stored in flash memory. Someone else can confirm this?

If you don't intend to use the VAFC, get it removed and sell it on ebay.

[Mugen_Euro]

Hey guys just converted my CAI to SRI and disconnected the apexi controller, when i started up my car it struggled and then died... restarted the car with the controller hooked up and it started properly.... i did a full ecu rest but i have more problems :( acceleration in gear 4 and 5 is pre much flat like next to no acceleration... sand thec ars not pulling very well in any other gear. i dnt know if its just me readjusting to SRI but it seems really flat :(

[aaronng]

Hey guys just converted my CAI to SRI and disconnected the apexi controller, when i started up my car it struggled and then died... restarted the car with the controller hooked up and it started properly.... i did a full ecu rest but i have more problems :( acceleration in gear 4 and 5 is pre much flat like next to no acceleration... sand thec ars not pulling very well in any other gear. i dnt know if its just me readjusting to SRI but it seems really flat :(
You CAN NOT just remove the apexi VAFC from the wiring and expect it to work. The wiring has been spliced into your ECU wiring loom and hence if you remove the VAFC, the ECU will not get readings from the sensors. You need to bring it to a reputable workshop that has tuning experience to uninstall it, hence why I said "get it removed" instead of "remove the VAFC".

[x10Hz]

poor guy =[

[corb13]

you cant afford to be a stingey with this sort of stuff, especially with euro's. i know coming from my old civic you want to do everything yourself and mod as fast as possible but you have to be prepared to get it done right, the first time..... best of luck with the VAFC removal

[djpro1]

i'll check my o2 sensor and clean my throttle body etc and see how that goes.
what other symptoms are there for a screwd o2 sensor?

I wouldn't say the O2 sensor was "screwed up" but rather did not fit the hole very well. So I guess it wasn't giving a good reading? Just make sure its air tight.

[Mugen_Euro]

LOL i got the best luck... fkn sum fool jumped the curb dodged two trees and managed to hit my car... knocked it a good 4 meters back while it was parked.... i had an after market rear bumper not covered by insurance any1 kno if ill get a new one wen i get it fixed or will i get a stock?

[elitee]

Wow what are the chances of that !
You will most proberly get stock bumper since you didn't declar it in your insurence policy
correct me if I'm wrong

[Mugen_Euro]

Wow what are the chances of that !
You will most proberly get stock bumper since you didn't declar it in your insurence policy
correct me if I'm wrong
that makes me sad :( i was hoping i could get another after market bumper and get the person who crashed into me to claim it on their insurance....

[jyh888]

that makes me sad :( i was hoping i could get another after market bumper and get the person who crashed into me to claim it on their insurance....

Yes you should be able to get what you originally had on your car. I had been through a similar situation where if you are not at fault you are able to claim for damages to your car, however this will depend on your insurance policy.

Just make a claim as normal and tell them you had an aftermarket bumper and ask them to source it for you. Either way, they are claiming charges through the third party.

[Mugen_Euro]

Looks like ill be getting a whole new kit actualy coz the tow truck driver crashed the front of my car into his truck BAHAHA just my luck ay

[elitee]

Hahaha

Sounds to good to be true !