Gas milage went down after MOD
03-15-2010, 07:33 PM
#1
1st Gear Member
Thread Starter
Join Date: Sep 2009
Location: CO
Posts: 101
Gas milage went down after MOD
So I installed new NGK TR-55 spark plugs, PP 70MM Throttle Body and BBK CAI last weekend. Every since then I realized my car is like drinking gas.
I filled up the tank to full last night and this morning I drove about 32miles. My car have already used 1/4 (quarter) of a tank. Is the gas milage suppose to go down with those mods ? This car is stock besides the mods listed under my signature.
Last Oil change 1050 miles
Last fuel filter change 1050 miles
Transmission Oil change 500 miles ago
Brake Service done Unknown
I filled up the tank to full last night and this morning I drove about 32miles. My car have already used 1/4 (quarter) of a tank. Is the gas milage suppose to go down with those mods ? This car is stock besides the mods listed under my signature.
Last Oil change 1050 miles
Last fuel filter change 1050 miles
Transmission Oil change 500 miles ago
Brake Service done Unknown
Last edited by GTVAPSAMTIK; 03-15-2010 at 10:16 PM.
03-15-2010, 11:08 PM
#6
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
What sort of driving was the 32 miles? All at once, or short trips/cold engine?
If you have not done so, disconnect the battery for 5-7 minutes so that the Keep Alive Memory (KAM) will be cleared. This will force the PCM to relearn the idle air, and short and long term fuel, trims.
The TR-55s are just plain ol' tungsten electrode plugs, and hardly an "upgrade". Since they are new I would not expect them to affect fuel economy, however unless you just like changing spark plugs every 20k miles yank 'em out and put in a set of single platinum plugs (OEM Motorcraft or Champion 3401s) that will be good for 75k to 100k miles.
If you have not done so, disconnect the battery for 5-7 minutes so that the Keep Alive Memory (KAM) will be cleared. This will force the PCM to relearn the idle air, and short and long term fuel, trims.
The TR-55s are just plain ol' tungsten electrode plugs, and hardly an "upgrade". Since they are new I would not expect them to affect fuel economy, however unless you just like changing spark plugs every 20k miles yank 'em out and put in a set of single platinum plugs (OEM Motorcraft or Champion 3401s) that will be good for 75k to 100k miles.
03-15-2010, 11:16 PM
#7
1st Gear Member
Thread Starter
Join Date: Sep 2009
Location: CO
Posts: 101
I bought NGK G-Power Platinum Performance Spark Plugs from American muscle. http://www.americanmuscle.com/ngk-sparkplugs-3403.html
I do have a locking cap but its a B*tch to lock it and unlock it. I think its a stock cap.
I do have a locking cap but its a B*tch to lock it and unlock it. I think its a stock cap.
03-15-2010, 11:18 PM
#8
1st Gear Member
Thread Starter
Join Date: Sep 2009
Location: CO
Posts: 101
What sort of driving was the 32 miles? All at once, or short trips/cold engine?
If you have not done so, disconnect the battery for 5-7 minutes so that the Keep Alive Memory (KAM) will be cleared. This will force the PCM to relearn the idle air, and short and long term fuel, trims.
The TR-55s are just plain ol' tungsten electrode plugs, and hardly an "upgrade". Since they are new I would not expect them to affect fuel economy, however unless you just like changing spark plugs every 20k miles yank 'em out and put in a set of single platinum plugs (OEM Motorcraft or Champion 3401s) that will be good for 75k to 100k miles.
If you have not done so, disconnect the battery for 5-7 minutes so that the Keep Alive Memory (KAM) will be cleared. This will force the PCM to relearn the idle air, and short and long term fuel, trims.
The TR-55s are just plain ol' tungsten electrode plugs, and hardly an "upgrade". Since they are new I would not expect them to affect fuel economy, however unless you just like changing spark plugs every 20k miles yank 'em out and put in a set of single platinum plugs (OEM Motorcraft or Champion 3401s) that will be good for 75k to 100k miles.
I went from Fort Riley to Manhattan and back. It was mostly on high way and lil in traffic. SInce past week I noticed my Tank is going empty fast for some reason even tho I dont drive much at all.
When I bought the car in Dec 09 it had 43.5 K miles on it and as of today I have 45.6K miles
Last edited by GTVAPSAMTIK; 03-15-2010 at 11:20 PM.
03-15-2010, 11:22 PM
#9
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
I bought NGK G-Power Platinum Performance Spark Plugs from American muscle. http://www.americanmuscle.com/ngk-sparkplugs-3403.html
03-15-2010, 11:31 PM
#10
1st Gear Member
Thread Starter
Join Date: Sep 2009
Location: CO
Posts: 101
I am so sorry, thought I saw TR55 on the box when I was installing them. I might be wrong. I made sure they are properly gapped before I installed em. By the looks of it, seems like my car is gonna give me close to 150 miles on full tank if that.
Last edited by GTVAPSAMTIK; 03-15-2010 at 11:39 PM.