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Results of ECU reset and other for feul economy
- Thread starter Weborific
- Start date
what are the negative impacts of reseting the ecu (if there are any) and if there are none, why wouldn't we all do it, and if we all do it, how often should it be done.
i have to tell you i am a little concerened with what i am reading in the forums about mileage. one of the reasons i bought this car was that the ecu rating was quite reasonable for gas mileage, i have only had my mp5 for 3 days, and have not had a chance to even fill it yet to start to record the economy i am getting, so i guess there is no reason to jump the gun, but if i get lest than 30mpg on the highway, i am going to be severly pissed. my 87 toyota camary that had 360,000 km on it got 29 mpg consistantly on the highway with some city mixed in. ANY stock 4 cyl car that is newer than 2000 should be getting AT LEAST that no? or am i just a naive little newb who bit off more than he can swallow? lol
which brings me to next question: other than resetting the ecu are there any mods to improve fuel economy?
i have been searching the forums for the key words fuel econom y or improve gas mileage, etc. and so far, i have found very little helpful imfo other than reseting the ecu which seems to get mixed reviews as far as economy. ANYone out there get really great economy? if so how are you doing it?
t.
i have to tell you i am a little concerened with what i am reading in the forums about mileage. one of the reasons i bought this car was that the ecu rating was quite reasonable for gas mileage, i have only had my mp5 for 3 days, and have not had a chance to even fill it yet to start to record the economy i am getting, so i guess there is no reason to jump the gun, but if i get lest than 30mpg on the highway, i am going to be severly pissed. my 87 toyota camary that had 360,000 km on it got 29 mpg consistantly on the highway with some city mixed in. ANY stock 4 cyl car that is newer than 2000 should be getting AT LEAST that no? or am i just a naive little newb who bit off more than he can swallow? lol
which brings me to next question: other than resetting the ecu are there any mods to improve fuel economy?
i have been searching the forums for the key words fuel econom y or improve gas mileage, etc. and so far, i have found very little helpful imfo other than reseting the ecu which seems to get mixed reviews as far as economy. ANYone out there get really great economy? if so how are you doing it?
t.
tmamer said:what are the negative impacts of reseting the ecu (if there are any) and if there are none, why wouldn't we all do it, and if we all do it, how often should it be done.
i have to tell you i am a little concerened with what i am reading in the forums about mileage. one of the reasons i bought this car was that the ecu rating was quite reasonable for gas mileage, i have only had my mp5 for 3 days, and have not had a chance to even fill it yet to start to record the economy i am getting, so i guess there is no reason to jump the gun, but if i get lest than 30mpg on the highway, i am going to be severly pissed. my 87 toyota camary that had 360,000 km on it got 29 mpg consistantly on the highway with some city mixed in. ANY stock 4 cyl car that is newer than 2000 should be getting AT LEAST that no? or am i just a naive little newb who bit off more than he can swallow? lol
which brings me to next question: other than resetting the ecu are there any mods to improve fuel economy?
i have been searching the forums for the key words fuel econom y or improve gas mileage, etc. and so far, i have found very little helpful imfo other than reseting the ecu which seems to get mixed reviews as far as economy. ANYone out there get really great economy? if so how are you doing it?
t.
My fuel economy sucks. Barely 400km / tank.
I think my pre-cat is dying and clogging the actual cat... what a crappy design.
thrasher said:My fuel economy sucks. Barely 400km / tank.
I think my pre-cat is dying and clogging the actual cat... what a crappy design.
can't you unclog the pre cat?
Mr.Ames said:i get not quite 400km to a tank but i only have a highflow cat
you're saying 400km till the engine light goes on, or 400km's till you're on your last drop and you have to fill up?
400km?? Dammdelguini said:you're saying 400km till the engine light goes on, or 400km's till you're on your last drop and you have to fill up?
I did notice that since ther winter gas is gone and regular gas is back im getting alot better millage
im about 550km to a tank in the city
WOW. this post is alive again!! OK, so here's what I've done to date to improve mileage. I went from 16MPG to 19MPG. Not even worth all these mods!!
- replaced PCV valve
- replaced air filter
- used fuel injector cleaner (several times)
- used an oil additive (Xentx)
- oil change
- new spark plugs
- new ignition wires
- new coils
- installed a grounding kit
- checked tire pressure
- ECU reset
- new rotors and checked for dragging brakes
*and I'm sure there's more I'm forgetting!
So after all that, my question is...WTF??!
- replaced PCV valve
- replaced air filter
- used fuel injector cleaner (several times)
- used an oil additive (Xentx)
- oil change
- new spark plugs
- new ignition wires
- new coils
- installed a grounding kit
- checked tire pressure
- ECU reset
- new rotors and checked for dragging brakes
*and I'm sure there's more I'm forgetting!
So after all that, my question is...WTF??!
- :
- MP5T / 944
I get 20,304,345,234,542.04 nm Per Tank
My 2005 P5 gave me worst mileage with no cats and a wide open muffler.
The next worst mileage was with both cats.
I am now running only the second cat and the Magnaflow cat-back exhaust.
Yesterday I got 675Km for 53L. Travelling between 80-110KPH, trying to keep the revs near the 2800-3200 RPM mark.
The only time I re-set the ECU was when I put on my custom CAI. Well, and when I forgot to re-connect my EGR sensor (thought it was a misfire code)
The next worst mileage was with both cats.
I am now running only the second cat and the Magnaflow cat-back exhaust.
Yesterday I got 675Km for 53L. Travelling between 80-110KPH, trying to keep the revs near the 2800-3200 RPM mark.
The only time I re-set the ECU was when I put on my custom CAI. Well, and when I forgot to re-connect my EGR sensor (thought it was a misfire code)
Last edited:
pass the peas
Member
- :
- 02.P5.MT
Wait, I thought fuel consumption was calculated as liters/100km in Canada. 19 mpg would be 12.4 liter/100km, right?
according to the site below, 12.4 L/100km is 19 MPG.
http://www.convert-me.com/en/convert/fuel
Chuyler1, I own a 2002 automatic P5 with about 96000 km on her. I'm not familiar with all aspects of cars, the least of which are the catalytic converters. Is is a simple check for my mechanic or is there dismantling involved? Pricey to replace? Thanks!
http://www.convert-me.com/en/convert/fuel
Chuyler1, I own a 2002 automatic P5 with about 96000 km on her. I'm not familiar with all aspects of cars, the least of which are the catalytic converters. Is is a simple check for my mechanic or is there dismantling involved? Pricey to replace? Thanks!
- :
- 03.5 YLW MSP
Weborific said:according to the site below, 12.4 L/100km is 19 MPG.
http://www.convert-me.com/en/convert/fuel
Chuyler1, I own a 2002 automatic P5 with about 96000 km on her. I'm not familiar with all aspects of cars, the least of which are the catalytic converters. Is is a simple check for my mechanic or is there dismantling involved? Pricey to replace? Thanks!
I own a 02 p5 regular auto and I get 24.5-26.5 all the time with over 153k on it. The worst I ever got was 22mpg and best was 27.3!
Weborific said:according to the site below, 12.4 L/100km is 19 MPG.
http://www.convert-me.com/en/convert/fuel
Chuyler1, I own a 2002 automatic P5 with about 96000 km on her. I'm not familiar with all aspects of cars, the least of which are the catalytic converters. Is is a simple check for my mechanic or is there dismantling involved? Pricey to replace? Thanks!
A Cat cannot be dismantled...well, it can but its no use trying to put it back together. They are not meant for that...
A way you can tell your Cat-converter has gone belly up is when yo start noticing a foul, rotten-egg-like smell from your exhaust. Most mechanics/exhaust shops will visually inspect the cats for free. Visual inspection means looking at the cat's body to ensure there are no dents, shaking it to make sure there is nothing rattling inside...although you'd hear rattling with regular driving...if its the pre-cat, you'd throw a code.
You can get a performance (free-flow) cat for about $100-$200 CDN. Try LORDCO you can get one that'll fit in the exhaust tunnel for about the above noted prices. After that, all you need to do is to have a reputable exhaust place take off your old cat, build you up a nice, larger diameter pipe to go with your larger-diameter free-flow cat and you're done. I'd say about $300-$500 CDN and you've got a nice mid pipe to complement what ever cat-back system you might want to buy later...
If you want to do a nice performance upgrade, get a header, a mid-pipe like the one described above and a nice cat-back system.
Getting rid of the restrictive cats will also net you better mileage...if you can keep your newly discovered heavy right foot off the gas that is...
- :
- 03.5 YLW MSP
LMAOWeborific said:I'll ask my brother-in-law what I can do since he's more familiar with her privates than I am!
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