Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-09-2019, 04:41 PM   #1 (permalink)
Master EcoModder
 
Join Date: Aug 2018
Location: USA
Posts: 455

Jeep - '97 Jeep Cherokee Sport
90 day: 19.36 mpg (US)

Blueberry - '07 Toyota Camry SE
Thanks: 180
Thanked 101 Times in 77 Posts
Fuel Filter and MPG

So I have access to a performance external fuel filter for basically free (like a $100 value). It filters particles down to 4 microns I think. Could I expect any gains from using this? I'm not sure what the OE specs are, but I would imagine that this filters fuel better.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-09-2019, 06:47 PM   #2 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
Thanks: 206
Thanked 420 Times in 302 Posts
Because it might filter better? Not a snowball's chance in hades. What has been proven to improve mileage, which deals with the fuel delivery system, is going from 4 hole injectors to 12 hole injectors.
__________________




  Reply With Quote
Old 03-09-2019, 07:07 PM   #3 (permalink)
Master EcoModder
 
Join Date: Aug 2018
Location: USA
Posts: 455

Jeep - '97 Jeep Cherokee Sport
90 day: 19.36 mpg (US)

Blueberry - '07 Toyota Camry SE
Thanks: 180
Thanked 101 Times in 77 Posts
Quote:
Originally Posted by ksa8907 View Post
Because it might filter better? Not a snowball's chance in hades. What has been proven to improve mileage, which deals with the fuel delivery system, is going from 4 hole injectors to 12 hole injectors.
Well I'm sure contaminants in fuel have a negative effect on performance. A better filter will result in less contaminants.

I went from 1 hole injectors to 4 hole injectors in my jeep. The difference was huge! It ran so smoothly after that. I think I got a difference in mpgs. I really want 12 hole injectors though
  Reply With Quote
Old 03-09-2019, 08:26 PM   #4 (permalink)
Rat Racer
 
Fat Charlie's Avatar
 
Join Date: May 2011
Location: Route 16
Posts: 4,150

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
You've got a 4.0 trying to shove power through an AW4 in order to move a literal brick through the air. There is so much inefficient slop in that chain, do you really think a tweak to fuel delivery is going to be noticeable in mpg once it gets through the engine, an anchormatic transmission, the driveline and tires and the aero losses? You'll notice more of an improvement by rearranging the deck chairs on the Titanic than upgrading an XJ's fuel filter.

If you got an improvement, it was because you had an injector that needed replacing. 1997 model year had OBDII. Get an SG or UG and you can see real numbers.
__________________

Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote
Old 03-10-2019, 12:50 AM   #5 (permalink)
Master EcoModder
 
Join Date: Aug 2018
Location: USA
Posts: 455

Jeep - '97 Jeep Cherokee Sport
90 day: 19.36 mpg (US)

Blueberry - '07 Toyota Camry SE
Thanks: 180
Thanked 101 Times in 77 Posts
Quote:
Originally Posted by Fat Charlie View Post
You've got a 4.0 trying to shove power through an AW4 in order to move a literal brick through the air. There is so much inefficient slop in that chain, do you really think a tweak to fuel delivery is going to be noticeable in mpg once it gets through the engine, an anchormatic transmission, the driveline and tires and the aero losses? You'll notice more of an improvement by rearranging the deck chairs on the Titanic than upgrading an XJ's fuel filter.

If you got an improvement, it was because you had an injector that needed replacing. 1997 model year had OBDII. Get an SG or UG and you can see real numbers.
You sound a lot like those naysayers that say "if you want good mpg, buy a Prius". There's a guy on another forum that got 25 mpg in his Cherokee with an AW4 with a modest parts budget. It is possible to get good gas mileage in a 4.0

None of what you said was helpful. I'm interested in the potential effects contaminants can have on overall performance.

I'm also not upgrading the filter. I'm adding an additional filter. The OE micron rating is 10, and the performance one is 5 or 4.
  Reply With Quote
Old 03-10-2019, 04:23 AM   #6 (permalink)
Master procastinator
 
Join Date: Apr 2017
Location: Panelia, Finland
Posts: 273

Turan turan - '09 Volkswagen Touran Freestyle

Combot - '04 Opel Combo Tour
90 day: 40.37 mpg (US)
Thanks: 103
Thanked 49 Times in 42 Posts
No harm trying that filter if you ask me. It's not a turn for the worse, that's for sure.
Who knows your car might run a little smoother--->you drive a bit more relaxed-->slightly better fuel economy.
  Reply With Quote
Old 03-10-2019, 12:14 PM   #7 (permalink)
Rat Racer
 
Fat Charlie's Avatar
 
Join Date: May 2011
Location: Route 16
Posts: 4,150

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
You're not going to get good, as in Prius, mpg, but you can get good XJ mileage. And that's a great thing- EcoModder isn't about buying new cars, it's about maximizing what you have.

The first piece of equipment you should buy is a ScanGauge or an UltraGauge: once it's calibrated you won't have to think you got a difference in mpgs, you'll actually know what you're getting. That's critical, because as iikhod alluded to, your right foot is where the biggest improvements are. But the overall sloppiness of SUV efficiency can't be ignored. You can work on aero and tires to get some impressive % gains in mpg. This thread from a long time ago shows some good aeromods to think about that are very nicely done, without changing the look of the vehicle: Jeep Cherokee Aeromods. As to tires... what psi are you running, and are you taking their diameter into account when calculating your distance traveled?

As it is, any increases in combustion efficiency that an extra (see?, I didn't say upgrade) fuel filter may bring are going to be more than counteracted by your other mods that increase the amount of gas being squirted into the cylinders: the CAI and throttle body. The 4.0 has enough power to move the rig. Throwing extra gas into it isn't very good for increasing your mpg. If "efficiency" means towing a boat up a mountain quickly, then by all means, shove more gas into those cylinders and get as close to perfect combustion as you can. If you want to improve your mpg, find a stock throttle body and while tearing out the CAI, think about designing a warm air intake.

But if you're not going to get a ScanGauge or UltraGauge, at least get a Fuel Shark.
__________________

Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote
The Following 2 Users Say Thank You to Fat Charlie For This Useful Post:
Taylor95 (03-10-2019), woodstock74 (04-06-2019)
Old 03-10-2019, 01:08 PM   #8 (permalink)
Master EcoModder
 
Join Date: Aug 2018
Location: USA
Posts: 455

Jeep - '97 Jeep Cherokee Sport
90 day: 19.36 mpg (US)

Blueberry - '07 Toyota Camry SE
Thanks: 180
Thanked 101 Times in 77 Posts
Quote:
Originally Posted by iikhod View Post
No harm trying that filter if you ask me. It's not a turn for the worse, that's for sure.
Who knows your car might run a little smoother--->you drive a bit more relaxed-->slightly better fuel economy.
Quote:
Originally Posted by Fat Charlie View Post
And that's a great thing- EcoModder isn't about buying new cars, it's about maximizing what you have.

The first piece of equipment you should buy is a ScanGauge or an UltraGauge: once it's calibrated you won't have to think you got a difference in mpgs, you'll actually know what you're getting. That's critical, because as iikhod alluded to, your right foot is where the biggest improvements are. But the overall sloppiness of SUV efficiency can't be ignored. You can work on aero and tires to get some impressive % gains in mpg. As to tires... what psi are you running, and are you taking their diameter into account when calculating your distance traveled?

As it is, any increases in combustion efficiency that an extra (see?, I didn't say upgrade) fuel filter may bring are going to be more than counteracted by your other mods that increase the amount of gas being squirted into the cylinders: the CAI and throttle body. The 4.0 has enough power to move the rig. Throwing extra gas into it isn't very good for increasing your mpg. If "efficiency" means towing a boat up a mountain quickly, then by all means, shove more gas into those cylinders and get as close to perfect combustion as you can. If you want to improve your mpg, find a stock throttle body and while tearing out the CAI, think about designing a warm air intake.

But if you're not going to get a ScanGauge or UltraGauge, at least get a Fuel Shark.
I really like ecomodder--it has helped me a lot. I've toyed with the idea of buying a scangauge for a while now. I suppose that should be the next thing I buy. It is hard to see the difference in some mods with the normal variations in tanks. For example, last tank I got over 17 mpg, but this one it looks like I will get at least 19 mpg (though it is warmer outside). I did see an improvement with the throttle body and CAI, but like you are implying, it is hard to know without the scangauge.

My tires I run at 34 psi. I've seen a lot of people recommending to run them at max psi, but is no one worried about uneven tire wear? Although the max psi on my tires is 60 psi... I'm not sure if I want to have them that high. My tires are getting old though so I will try bumping it up a little. I do take my larger tires into consideration... I need to multiply my miles by 1.04 for an accurate reading.

Hopefully I have a scangauge before I install the fuel filter. Most people here value mods when they are validated with a scangauge.
  Reply With Quote
Old 03-10-2019, 02:57 PM   #9 (permalink)
Rat Racer
 
Fat Charlie's Avatar
 
Join Date: May 2011
Location: Route 16
Posts: 4,150

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
With a gauge, you don't need to wait for a whole tank. Using the short trip numbers, repeated trips can tell you tons. "Normally at this part of my commute I'm at XX.XX mpg, today I'm up 1.5. What's different?"
__________________

Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote
The Following User Says Thank You to Fat Charlie For This Useful Post:
Taylor95 (03-10-2019)
Old 03-10-2019, 04:44 PM   #10 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
Thanks: 206
Thanked 420 Times in 302 Posts
Quote:
Originally Posted by Taylor95 View Post
I really like ecomodder--it has helped me a lot. I've toyed with the idea of buying a scangauge for a while now. I suppose that should be the next thing I buy. It is hard to see the difference in some mods with the normal variations in tanks. For example, last tank I got over 17 mpg, but this one it looks like I will get at least 19 mpg (though it is warmer outside). I did see an improvement with the throttle body and CAI, but like you are implying, it is hard to know without the scangauge.

My tires I run at 34 psi. I've seen a lot of people recommending to run them at max psi, but is no one worried about uneven tire wear? Although the max psi on my tires is 60 psi... I'm not sure if I want to have them that high. My tires are getting old though so I will try bumping it up a little. I do take my larger tires into consideration... I need to multiply my miles by 1.04 for an accurate reading.

Hopefully I have a scangauge before I install the fuel filter. Most people here value mods when they are validated with a scangauge.
A member previously tested tire pressure with coastdown testing. I believe the results, on a metro, had significantly diminishing returns above 45psig.

Ultimately it depends on the carrying capacity of the tires and the weight of the vehicle.

__________________




  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com