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Old 08-05-2008, 09:30 AM   #58
theholycow


 
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Drives: '02 GMC Sierra, '80 Lesabre
Join Date: Mar 2008
Location: RI
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Quote:
Originally Posted by CamaroSpike23 View Post
buuuuuuuuuuuuuuut, doesnt the AFM only activate during low load, idle, and cruising situations? (stick with me on this)
According to the documentation posted above, it doesn't activate during idle, only steady low load (cruising).

Quote:
GM theoretcially should be able to do a manual L99 with AFM.....
The problem they claim is that it kicks a little when switching, and a torque converter absorbs that.

Quote:
since the 6th gear is only really for fuel economy,
If 6th is really only for economy, it damn well better be good for 65mph at 1000rpm. Those of us trying for high MPG don't need blast-off acceleration in our top gear...my VW revs 3000 at 70mph and accelerates far more than necessary for general highway driving. I usually get into high gear under 30mph unless I'm in a hurry. I've never driven a GM manual transmission but I hope they use tall gears like they do with automatics.

Quote:
add to that the AFM and you could yield 50+ mpg highway with the manual...
50+mpg is territory for a 2000 pound car with 85hp and very low aerodynamic drag (low coefficient of drag AND low frontal area). With the tall 6th as I request above, AFM, and DI, the Camaro could get 35mpg highway, depending on the size of the engine and its torque band...maybe even up to 40mpg with some aerodynamic improvements, but by then it would piss off everyone on this forum.

Making it GM mild hybrid or Prius-like hybrid could help with city mileage, and Volt-like hybrid could help with both city and highway.

Quote:
Originally Posted by jmliptak View Post
What if the manual tranny was a dual clutch with an auto mode???????
There's still no torque converter to absorb AFM's kick. It's not like the computer can feather the clutch under load to let AFM switch on and off...that'd be even worse than a little kick from the engine.
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2002 GMC Sierra 4x4 5.3 (190,000 miles and going strong)
1980 Buick Lesabre family heirloom with 36,000 miles
2008 Volkswagen Rabbit 2 door I5-2.5 5spd DD lease
Quote:
Originally Posted by CamaroSpike23 View Post
she really underestimates the damage i would do to her reproductive organs
http://allOffTopic.com is the place for all the naughty stuff you can't get away with on this forum...

Last edited by theholycow; 08-05-2008 at 09:35 AM. Reason: Oops, I misread the AFM documentation above...removed one comment from my post.
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