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Old 06-01-2007, 10:33 AM   #1
moonzie
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Member#: 128537
Join Date: Oct 2006
Chapter/Region: MWSOC
Location: Bloomington, Indiana
Vehicle:
2004 Baja Turbo
Red/Silver

Default increasing turbo fuel efficiency

I've heard it suggested in several places that if you upgrade the induction and exaughst components of your turbo you will more than likely see better fuel efficiency (that is as long as you don't jump on the gas all the time - the primary reason FOR getting bigger components)

I was wondering if anyone who's done any turbo performance upgrades have noticed any increases in fuel efficiency? BajaSTI05? Cliffhanger?
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Old 06-01-2007, 06:21 PM   #2
Hawk296
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Member#: 14555
Join Date: Jan 2002
Chapter/Region: MWSOC
Location: Troy, MI
Vehicle:
1995 Impreza L
Baja

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Mine has been pretty much the same as far as highway miles. 24MPG. City driving has decreased, but thats because I like to use the throttle a lot.
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Old 06-02-2007, 01:45 AM   #3
bobjr94
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Member#: 6176
Join Date: Apr 2001
Chapter/Region: NWIC
Location: Roy,WA
Vehicle:
15 WRX, 04 wrb STi
85 wrb BRAT

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I use to got 29-30 best and 27-28 average in my wrx with catless uppipe, magnaflow muffler and short ram intake. Was a bit lighter and only a 2.0, but these all added power and mileage.
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Old 06-10-2007, 03:50 AM   #4
Dave G
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Member#: 4738
Join Date: Mar 2001
Chapter/Region: Tri-State
Location: Philadelphia PA
Vehicle:
2006 Baja Turbo
Blue

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I switched from dino oil to Castorl Syntec 5w-50. I've been getting approx 2mpg better hwy mileage ever since. My driving style has not changed, and the roads I drive on are the same.
The 2mpg is an increase of approx 10% in gas mileage.
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Old 06-12-2007, 09:12 AM   #5
dfritz
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Member#: 49069
Join Date: Nov 2003
Location: western colorado
Vehicle:
03 obs
05 Baja turbo 5 spd

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I've done a few things, most of them with no effect. I think the ECU really negates the changes, especially to fuel/air tweaks.

I've had a local muffler shop install a nice stainless dynaflow and cut out the resonator. I've taken off and put back on the intake silencer elbow in the fender. I've added a KN. I've switched to synth gear fluid. I've made a scoop that forces air into the intake a bit better than the stock set up (removed the plastic dam on the hood for a quick improvement).

I'm maybe getting 1 to 1.5 better mpg. I really suspect if I could lean it out a bit, it would get about 5% better yet.
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Old 06-12-2007, 12:36 PM   #6
moonzie
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Join Date: Oct 2006
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Location: Bloomington, Indiana
Vehicle:
2004 Baja Turbo
Red/Silver

Default

I also tried removing that little dam up front on the air intake, but it had no effect on my fuel efficiency after 2 fillups.

I'm probably going to take my Baja into a local muffler shop and have them do some custom 3" exaughst on it. But that wont be til Fall.
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