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Discussion Starter #1
I was wondering how the 4 speed automatic tranny compares to the 6spd in terms of acceleration and top speed. Are you really trading off a lot of power for convienence? Also much HP can the automatic tranny handle before it blows? Thanx in advance~!
 
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Discussion Starter #2
I have had 2 6 spd MKIVs and I know have an automatic.

I'll try to answer each of your questions:

Acceleration: ATs seem to be quicker in the 1/4 mile because they are more consistent and easier to get low times. The AT also has a good pull in first gear and in second gear. They are both pretty tall gears but the pull is pretty strong so it feels pretty fast. It seems to me like the turbos take longer to come online in the automatic however. Thus, the initial throttle response is slower in an automatic but once it starts boosting it feels faster.

Top Speed: I don't know. I have never gone over 150 in any of my cars.

Trading off power for convenience: I don't really know of anybody who buys an automatic for convenience. Usually, people buy the automatic because they cannot find a good deal on a 6 spd. Some also buy it because you can usually turn better times in the 1/4 without a single. Generally speaking however, there is not much of a trade off of power for convenience(you have more parasitic drivetrain loss due to the automatic). It is really a matter of the usability of the power. Many people find that the automatics are more boring than 6 spds.

How much power can the auto take? The auto seems to be able to take BPU++ without too many problems. I have been told that you can go to a small single(sp57,t60,t61) without blowing it up which translates to 475 - 500 RWHP.

Adam
 

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Auto tranny is easily good for 500RWHP... and can be pushed to about 550RWHP... after that, actually after about 500 it would be good to go with the Sound Performance or PHR Transmission upgrades... after that the tranny is good for 1000RWHP or so ;)
 

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Reed said:
I have had 2 6 spd MKIVs and I know have an automatic.

..........

Adam
Damn.............that's just not FAIR!!!!!!!!!!
J/K - I agree with all you said.
Just add that 6-spd will be better in twisties (road-racing, etc).
 

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In the magazines the auto was about .5 seconds slower to 60 mph and in the 1/4 mile. After you go BPU (and start having traction problems) the advantage off the line probably goes to the auto. From a roll on the highway, the 6-speed should still have the advantage. I personally would settle for the 6-speed even if it were .5 seconds slower than the auto after BPU just to be able to drive my car instead of ride in it. :)

Later, Steve
 
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Discussion Starter #6
Sorry for the dumb question but I'm a newbie. What's BPU stand for again?
 

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Go to www.mkiv.com It is basically downpipe, exhaust, BCC, boost controller, and running 17psi or higher. This should result in between 380 and 400 rwhp.

Later, Steve
 
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