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Old 04-17-2004, 07:43 PM   #1
HoRo1
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Default Mileage with Prodrive stage 3

In a hard driven WRX (consistently 3rd and 4th gears 4000-6500RPM almost always WOT) with a Prodrive Stg 3 what kind of mileage are we looking at?
>12mpg?
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Old 04-17-2004, 10:14 PM   #2
mexicanpizza
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What is prodrive stage 3?
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Old 04-17-2004, 11:04 PM   #3
MB38
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Probably sub-10. Who on earth drives a car like that? If you do... come on, that's not safe (for the car or, frankly, other drivers on the road).
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Old 04-18-2004, 12:41 PM   #4
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Quote:
Originally posted by MB38
Probably sub-10. Who on earth drives a car like that? If you do... come on, that's not safe (for the car or, frankly, other drivers on the road).
On the track, silly!
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Old 04-18-2004, 04:52 PM   #5
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*whew*

I retract my previous statement.
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Old 04-18-2004, 10:21 PM   #6
CirrusWRX
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I can't really comment, nor do I really think anybody else can because that's a REALLY random question (IMO...) Could you possibly provide a reason why you'd be interested in obtaining this information?

I don't think many people really keep track of their gas mileage at the track, but I'm curious of what your thinking is. (Do you have an event coming up and want to see how much you need in the tank for the whole weekend?)
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Old 04-20-2004, 11:39 AM   #7
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Quote:
Originally posted by CirrusWRX
I can't really comment, nor do I really think anybody else can because that's a REALLY random question (IMO...) Could you possibly provide a reason why you'd be interested in obtaining this information?

I don't think many people really keep track of their gas mileage at the track, but I'm curious of what your thinking is. (Do you have an event coming up and want to see how much you need in the tank for the whole weekend?)
I have the opportunity to acquire a Prodrive Stage 3 at a very good price.
I have the opportunity to run the car in a 2.5 hour endurance race.
I know that with a stock motor I get 9-10MPG at the track.
I have been told that there should be a slight improvement in fuel consumption with a stage 3.
If I can get 12-12.5MPG I should (very very tight) be able to run the race without refueling. I estimate the race will be about 170 miles. A 14 gallon tank at 12MPG = 168miles.
I'll be setting the redline at 6400-6500RPM as well to help a little with fuel.

Of course my rear diff is toast (again) after 2000 miles and both front axles need to be replace (again - 3rd passenger side in 4000 miles!). So I may not even run the enduro.
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Old 04-20-2004, 11:55 AM   #8
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That's a very valid question, but I think it'll be a hard one to figure out because there is really so much involved. Depends on how you alter your driving habbits (if at all) for the enduro. It'll depend on the TYPE of gas you use (octane).

But also, are you sure you want to cut it that close anyway? I'm no track expert, but I know I never like to run a whole lot below 1/4 tank for starvation reasons. I think the additional 12-12.5 mpg is being a little optimistic. The way I see it, when people see the increase in MPG it tends to be a combination of their driving habbits, and, obviously, removing the obstruction from the exhaust, as well as whatever tuning changes are made. But if the ECU senses it's in an agressive condition, I don't think you'll benefit from those changes.

This is all speculation just attempting to throw out ideas.
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Old 04-20-2004, 01:45 PM   #9
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Think of it this way: Is the car going to be 20-25% more efficient going around the track? You are still using the same amount of energy to accellerate and slow down, the same wind resistance is there, etc... You might be able to make a difference on the street (a few mpg), but there is no way on the track that you could increase efficiency that much without some other sacrifice (speed, most likely).

Have fun with it either way!

-Charlie
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Old 04-20-2004, 03:07 PM   #10
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I'd say that 12-12.5 is very optimistic but who knows. I wouldn't be suprised at all if you mpg actually went down because with the Prodrive you are running more boost = more fuel.
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Old 04-20-2004, 03:57 PM   #11
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Quote:
Originally posted by HoRo1
On the track, silly!

i'll vouch for horo1
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