Loud cold start and mpg drop since new - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

be6sti · 11-27-2012, 04:18 PM

So.... I understand that the di system is very loud and all but my frs seriously sounds like a tractor when I start it up when cold... Pretty sure it's normal just want to confirm it. Also my average mpgs have been steadily falling from the first few days I owned it from 26.1 mpg avg to now three weeks later to 23.8 I haven't been driving the car as much now but I have a 10 mile drive to work each way and do a few short trips a week. I just find it odd that my mpgs are getting worse as I settle in... Not sure if this is an issue either... But to end on a true complaint.... Tail light condensation got me

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roddy · 11-27-2012, 08:01 PM

Shorter trips and longer warm-up times will affect mileage, and so will winter gas. Tire pressure will drop some when it gets colder, as well. Lost of factors at work this time of year. I wouldn't sweat it too much, it will probably pick back up in the spring.

Edit: Re the sound...mine sounds like it's workin' for the first minute or so until the idle steps down a bit. Pretty much normal. It just sounds that way longer on a cold start.

be6sti · 11-27-2012, 08:38 PM

I know the warm ups and such affect gas mileage but in all reality the trips are the same since I bought it.... Only temps have changed

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Little_Red_FR-S · 11-27-2012, 09:12 PM

I went from 28.8 all day long to 23.9 after having my HPFP and ECU replaced...it doesn't make any sense??!!!

Asphaltfrs1 · 11-28-2012, 11:32 AM

It might have to do with the weather. I'm in California and even when I don't drive like a grandma I average from 28 mpg to 29mpg combined. 85% highway miles

Neziah · 11-28-2012, 11:36 AM

Cold starts are louder till it drops the idle down, you can usually get it to drop down by slightly moving your car. LOL Bliping the throttle won't do it, but just engaging the clutch a little will.

Dezoris · 11-28-2012, 12:11 PM

Midwest refineries switched over to winter fuel formulation for the gas stations. The change effects MPG by 2-3 MPG. I have never gotten MPG that low, however...

Switch your gauge mode to view instant MPG and keep the car in 5 or 6 as much as possible and watch your right foot see how it affects your MPG. Make sure your tire pressure is 34-35 all around..

be6sti · 11-28-2012, 01:35 PM

My tires are set to 37psi

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11-27-2012, 04:18 PM	#1
be6sti Senior Member Join Date: Sep 2012 Drives: 2013 scion frs Location: West Des Moines Iowa Posts: 344 Thanks: 6 Thanked 67 Times in 53 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Loud cold start and mpg drop since new So.... I understand that the di system is very loud and all but my frs seriously sounds like a tractor when I start it up when cold... Pretty sure it's normal just want to confirm it. Also my average mpgs have been steadily falling from the first few days I owned it from 26.1 mpg avg to now three weeks later to 23.8 I haven't been driving the car as much now but I have a 10 mile drive to work each way and do a few short trips a week. I just find it odd that my mpgs are getting worse as I settle in... Not sure if this is an issue either... But to end on a true complaint.... Tail light condensation got me Sent from my iPhone using Tapatalk __________________ "Fuck it lets go!"

11-27-2012, 08:01 PM	#2
roddy Senior Member Join Date: Apr 2012 Drives: '13 Ultramarine Location: Ontario Canada Posts: 2,243 Thanks: 1,476 Thanked 1,165 Times in 685 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Shorter trips and longer warm-up times will affect mileage, and so will winter gas. Tire pressure will drop some when it gets colder, as well. Lost of factors at work this time of year. I wouldn't sweat it too much, it will probably pick back up in the spring. Edit: Re the sound...mine sounds like it's workin' for the first minute or so until the idle steps down a bit. Pretty much normal. It just sounds that way longer on a cold start. __________________ no man with a good car needs to be justified...

11-27-2012, 08:38 PM	#3
be6sti Senior Member Join Date: Sep 2012 Drives: 2013 scion frs Location: West Des Moines Iowa Posts: 344 Thanks: 6 Thanked 67 Times in 53 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I know the warm ups and such affect gas mileage but in all reality the trips are the same since I bought it.... Only temps have changed Sent from my iPhone using Tapatalk __________________ "Fuck it lets go!"

11-28-2012, 12:11 PM	#7
Dezoris Senior Member Join Date: Aug 2012 Drives: FR-S Location: IL Posts: 2,857 Thanks: 519 Thanked 2,997 Times in 1,095 Posts Mentioned: 159 Post(s) Tagged: 1 Thread(s)	Midwest refineries switched over to winter fuel formulation for the gas stations. The change effects MPG by 2-3 MPG. I have never gotten MPG that low, however... Switch your gauge mode to view instant MPG and keep the car in 5 or 6 as much as possible and watch your right foot see how it affects your MPG. Make sure your tire pressure is 34-35 all around.. __________________ SAVAGEGEESE

11-28-2012, 01:35 PM	#8
be6sti Senior Member Join Date: Sep 2012 Drives: 2013 scion frs Location: West Des Moines Iowa Posts: 344 Thanks: 6 Thanked 67 Times in 53 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	My tires are set to 37psi Sent from my iPhone using Tapatalk __________________ "Fuck it lets go!"

11-27-2012, 09:12 PM	#4
Little_Red_FR-S Member Join Date: Sep 2012 Drives: 2013 Firestorm FR-S Location: Brick, New Jersey Posts: 28 Thanks: 0 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I went from 28.8 all day long to 23.9 after having my HPFP and ECU replaced...it doesn't make any sense??!!!

11-28-2012, 11:32 AM	#5
Asphaltfrs1 Senior Member Join Date: May 2012 Drives: 2013 asphalt fr-s Location: Los angeles Posts: 488 Thanks: 109 Thanked 125 Times in 88 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	It might have to do with the weather. I'm in California and even when I don't drive like a grandma I average from 28 mpg to 29mpg combined. 85% highway miles

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