Another positive side effect of the 1.8bar WG spring
02-06-2006, 07:10 PM
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Another positive side effect of the 1.8bar WG spring
I am now getting an extra 50 miles out of a tank of gas. I guess it makes sense-I use a lot less throttle now to achieve the same results. Still, wow. Big fan of this mod.
02-06-2006, 07:48 PM
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I get about 400 before the low gas warning shows on Autocheck
Usually put in about 18 gallons per fillup...about 23mpg by simple math, but without a trip computer impossible to know for sure.
However I am running narrow, low rolling resistance tires on 16x6 steel wheels. =)
However I am running narrow, low rolling resistance tires on 16x6 steel wheels. =)
02-06-2006, 08:31 PM
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If anything, you should get worse gas mileage because higher boost comes on sooner...
and this requires more fuel.
I think your driving style or some other variable changed.
I think your driving style or some other variable changed.
02-06-2006, 08:42 PM
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maybe the way to look at it is this
yea, the boost comes on sooner but I stay in boost for a shorter amount of time because the speed that I'm trying to reach presents itself to me a lot sooner.
Also, if you follow your logic, a chip upgrade should result in worse gas mileage(since there is more boost+fuel)..but we know that isn't the case when software is upgraded.
Also, if you follow your logic, a chip upgrade should result in worse gas mileage(since there is more boost+fuel)..but we know that isn't the case when software is upgraded.
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02-06-2006, 08:54 PM
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Do we know that this isn't the case?
It all depends on the chip. Often a chipped car will run leaner all around - including cruise (where you will see most of your fuel savings), but when you run higher boost you'll consume a lot more fuel.
Reaching your target speed faster as a reason for lower fuel consumption is like saying the faster you accelerate the less fuel you use. If you accelerate to your target speed once slowly and once quickly, you will use much more fuel the second time under hard acceleration.
You must also remember that the stock turbo is way beyond its efficient range at 25 psi - and the fuel system isn't doing so well either. You may be getting the same amount of fuel in the engine at 25 psi as you are at 22psi, which may not be enough to cause a dangerously lean condition but it would make your car accelerate harder without the extra fuel usage. It's possible, but I'm skeptical of this.
-Mike
Reaching your target speed faster as a reason for lower fuel consumption is like saying the faster you accelerate the less fuel you use. If you accelerate to your target speed once slowly and once quickly, you will use much more fuel the second time under hard acceleration.
You must also remember that the stock turbo is way beyond its efficient range at 25 psi - and the fuel system isn't doing so well either. You may be getting the same amount of fuel in the engine at 25 psi as you are at 22psi, which may not be enough to cause a dangerously lean condition but it would make your car accelerate harder without the extra fuel usage. It's possible, but I'm skeptical of this.
-Mike
