From an insane 10.8mpg to a mindblowing 8.7mpg -_-
#16
04-01-2012, 12:32 PM
Yes, it will. Your alligment being off has a HUGE impact on your mileage dude.
You cannot go off the on-board readings. Do nothing until you get ACTUAL readings by calculating Miles travelled per Gallon consumed. Also, you didn't say what sized tires you have, are they the same diameter as stock?
Do the calculation for MPG by:
1. Fill the tank. Note where you fill up, you'll want to return to the same pump if possible.
2. RESET your TRIP odometer on your dash.
3. Drive for however long you like. It's recommended to run close to empty so you get an accurate idea of fuel consumed across a tank.
4. Return to the same pump and fill up again. Record Gallons to 'full'. Record Miles travelled from TRIP odometer
5. Divide miles travelled (TRIP mileage) by Gallons used
6. Now you have your ACTUAL mileage. Repeat this if you like a few times to get a more accurate average mileage.
Example:
1. Full tank
2. TRIP = 0
3. Almost empty tank
4. Filled tank.
350 Miles travelled on TRIP
20 Gallons to fill up tank
5 350 / 20 = 17.5
6. 17.5 MPG
^^Are the VC's that expensive???? The Maxima's (6th gen version) are only like $30-40 for the whole thing with built in new seals........ just curious.
You cannot go off the on-board readings. Do nothing until you get ACTUAL readings by calculating Miles travelled per Gallon consumed. Also, you didn't say what sized tires you have, are they the same diameter as stock?
Do the calculation for MPG by:
1. Fill the tank. Note where you fill up, you'll want to return to the same pump if possible.
2. RESET your TRIP odometer on your dash.
3. Drive for however long you like. It's recommended to run close to empty so you get an accurate idea of fuel consumed across a tank.
4. Return to the same pump and fill up again. Record Gallons to 'full'. Record Miles travelled from TRIP odometer
5. Divide miles travelled (TRIP mileage) by Gallons used
6. Now you have your ACTUAL mileage. Repeat this if you like a few times to get a more accurate average mileage.
Example:
1. Full tank
2. TRIP = 0
3. Almost empty tank
4. Filled tank.
350 Miles travelled on TRIP
20 Gallons to fill up tank
5 350 / 20 = 17.5
6. 17.5 MPG
^^Are the VC's that expensive???? The Maxima's (6th gen version) are only like $30-40 for the whole thing with built in new seals........ just curious.
... I'm currently running coupe 18' sport 225/45F 245/45R dropped on H&R's.
Last edited by Threepoint5; 04-01-2012 at 12:40 PM. Reason: typo
#17
04-01-2012, 05:33 PM
#20
04-02-2012, 02:24 AM
. The most I did was to line them up with the old ones to see if there was any difference in the gaps but it seemed fine.
#21
04-02-2012, 02:48 AM
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Threepoint5 (04-04-2012)
#23
04-03-2012, 11:30 PM
Insane mpg problem
Dude something must be serious going on. I just got done driving from Houston, TX to Dallas. I did it on 2/3 a tank and average speed of 95 mph. My day to day driving around town and on the highway here in the DFW I get 24mpg. I'm driving an 05 6mt with 95k miles on her, and she begs for more. I would recommend pulling those new plugs back out and set the gap and as recommended in your owners manuel. Most come pre-gapped but the gapping issue can cause serious mpg issues. I would also recommend resetting the ECU- ie., take the ground off the battery for a couple minutes. If that doesnt help post back.
#25
04-04-2012, 10:22 AM
Dude something must be serious going on. I just got done driving from Houston, TX to Dallas. I did it on 2/3 a tank and average speed of 95 mph. My day to day driving around town and on the highway here in the DFW I get 24mpg. I'm driving an 05 6mt with 95k miles on her, and she begs for more. I would recommend pulling those new plugs back out and set the gap and as recommended in your owners manuel. Most come pre-gapped but the gapping issue can cause serious mpg issues. I would also recommend resetting the ECU- ie., take the ground off the battery for a couple minutes. If that doesnt help post back.
#26
04-04-2012, 10:24 AM
but ill definitely report back with the calculations.
#27
04-04-2012, 10:34 AM
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Threepoint5 (04-04-2012)
#28
04-04-2012, 10:46 AM
Bad cats cause huge mpg problems and with fouled out plugs I'd suggest that first... Gap the plugs get an alignment put some air in the tires and then do manual math on the mpg...
Also the m6 cars do way better mpg than the a5. My a5 got a best of 24.4 from dc to Boston. In 6 hours
Also the m6 cars do way better mpg than the a5. My a5 got a best of 24.4 from dc to Boston. In 6 hours
#29
04-04-2012, 10:55 AM
Test pipes need to be tuned for, so if you have them when you put them on make sure you have 500 extra bucks to tune it correctly.
But yes they free up hp and mpg. If they are clogged the car would seem pretty normal while driving just be a bit low on power and horrible on fuel cause most cars dump fuel to fool things off like a cat or pistons
But yes they free up hp and mpg. If they are clogged the car would seem pretty normal while driving just be a bit low on power and horrible on fuel cause most cars dump fuel to fool things off like a cat or pistons
The following users liked this post:
Threepoint5 (04-04-2012)
#30
04-07-2012, 08:30 AM