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Joined: Jan 2005
Posts: 453
CEG\'er
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CEG\'er
Joined: Jan 2005
Posts: 453 |
Originally posted by Majisto:
I don't "shift" because it's an automatic. I should clarify that, sorry. I couldn't imagine shifting under 2K either, but the automatic is much lazier.
That makes sense, I didn't think about it that you could have had an auto. Yeah with an auto it's alot different.
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Joined: Jun 2003
Posts: 389
CEG\'er
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CEG\'er
Joined: Jun 2003
Posts: 389 |
Originally posted by LocoSCZ:
No.
Yes it is. I think the CD4E shifts quickly, but I mean to say it's easier to keep it at a constant RPM than a standard. I'm not saying it's a bad transmission. Lazy shifting was the old Buick Century.
2000 Contour SE
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Joined: Jul 2001
Posts: 7,100
Addicted CEG\'er
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I don't think that Hector was replying to you, Majisto.
lol
Ray
'99 CSVT - Silver #222/276
In a constant state of blow-off euphoria.
Originally posted by Kremitthefrog:
I like to wear dresses and use binoculars to watch grandmas across the street.
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Joined: May 2002
Posts: 21,653
I have no life
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I have no life
Joined: May 2002
Posts: 21,653 |
Originally posted by Majisto:
Originally posted by LocoSCZ:
No.
I think the CD4E shifts quickly, but I mean to say it's easier to keep it at a constant RPM than a standard. I'm not saying it's a bad transmission.
No.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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Joined: Aug 2001
Posts: 17,248
CEG road warrior
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CEG road warrior
Joined: Aug 2001
Posts: 17,248 |
Originally posted by Majisto:
Originally posted by LocoSCZ:
No.
Yes it is. I think the CD4E shifts quickly, but I mean to say it's easier to keep it at a constant RPM than a standard. I'm not saying it's a bad transmission. Lazy shifting was the old Buick Century.
I drive just as fast. 
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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Joined: May 2005
Posts: 584
Veteran CEG\'er
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Veteran CEG\'er
Joined: May 2005
Posts: 584 |
Originally posted by Ray:
a few things to note:
driving belowe the "bulk" of the powerband (lower than about 2K) is a waste of time... There is more strain on the transaxle to pull a car that low in the rpm range, and in turn uses more gas.
Also.. coasting in neutral or with the clutch in uses more gas than leaving it in gear and "engine braking" down a hill.
In neutral, you are still pumping gas through the injectors (idling)... in gear, it will actually shut off the injectors and stop using gas at all.. Coasting in gear is the most efficient means of operating the engine that is possible.
You will see the best mileage staying between 2K and 3K (power band and secondary operation, respectively).
Ray
That's an interesting bit to note about coasting in gear. I will keep that in mind and see if it has any noticeable impact on my gas mileage next time I'm at the pump.
As for shifting below 2k rpm... I didn't say that anywhere. I usually shift around 2500-2750, the main difference being that I open the throttle up less, which means it takes longer for the car to get up to speed. Of course, fast acceleration = gas hog, and that's what I'm trying to avoid. Notice that I said a combination of keeping the RPMs low and opening the throttle as little as possible. Regardless of RPM, you're not bogging down the engine in any gear until you have to open the throttle more than you should. As long as you're not driving uphill, there's no reason why shifting at 2k wouldn't be a viable and effective option in terms of gas usage for the CSVT. For example, there are several streets around where I live where I can drive 25 mph in 4th gear because they are all fairly flat. The engine is running at well less than 2k RPM, but it's providing just enough power to propel the car while I'm just touching the throttle. If at any point I need to open the throttle up further for any reason, it's a logical step to downshift to 3rd first, especially if I'm coming up on a hill.
E0 Silver Frost CSVT #3095/6535
Alpine CDA-9851
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Posts: 7,100
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Totally agreed. If you are only depressing the gas pedal enough to "just get moving" (as in when you take off from a stop) then you obviously aren't bogging the engine by being below the powerband.
Its as you stated, when you try to press the gas pedal too far and you are too low in the rev-band to accelerate at the pace which your gas pedal is dictating. THAT is bad on the drivetrain.
Ray
'99 CSVT - Silver #222/276
In a constant state of blow-off euphoria.
Originally posted by Kremitthefrog:
I like to wear dresses and use binoculars to watch grandmas across the street.
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Joined: May 2005
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Yup, exactly. I had just wanted to point out that it is possible to drive below 2k RPM without bogging down the engine, which is the only way to do it if you want to conserve gas. Given your response, I was afraid that I had given the wrong impression with my first post about that particular driving habit, and I just wanted to clarify.
Edit: Apparently my improved driving habits have paid off a little, because this weekend I filled up after a lot of highway driving and calculated 29.6 mpg, the highest I've seen yet on my stock SVT (the previous high was 28.5).
E0 Silver Frost CSVT #3095/6535
Alpine CDA-9851
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Joined: Nov 2000
Posts: 204
CEG\'er
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CEG\'er
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Posts: 204 |
nope, i'm driving the same still averaging 18mpg on my gto. 
98svt wrecked
00svt sold
05 GTO m6 my new toy
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Joined: Jul 2005
Posts: 351
CEG\'er
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CEG\'er
Joined: Jul 2005
Posts: 351 |
I have slowed down significantly. Usually I will cruise in to work with the rest of the traffic around 75 - 80 mph. I usually get about 20 mpg. However, I have recently slowed to 60-65 and now get 26 mpg. Of course, I practically get ran over every day.
Black 2000 SVT Contour w/ Prairie Tan
MSDS Headers | Magnaflow | Mirko Splitter | Fidanza Short Throw Shifter | Kenwood KVT-815 LCD/DVD
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