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Old September 20th, 2010, 07:39 PM   #21
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my bad damn
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Old September 20th, 2010, 07:50 PM   #22
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Regardless you have to take your foot off anyway or youll red line then it which drops the rpm down to 2k and you start over again.

Though it isn't good due to the consistency of it, if it blew b/c you "slap shifted it" is false otherwise all autos in every car would blow when they hit slow and go traffic on the interstate.
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Old September 20th, 2010, 08:36 PM   #23
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ok im kinda lost as to what exactly your doing here? Is he literally shifting gear by gear, or leaving it in D and doing something wierd with the gas ?q
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Old September 20th, 2010, 08:45 PM   #24
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well the OP is doing the gear by gear im doing gas,
which is worse and why?
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Old September 20th, 2010, 08:46 PM   #25
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Shifting gear to gear is useless (auto of course). The computer knows the ideal shift points. People do it because they think it's faster, but in actuality, it's not.
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Old September 20th, 2010, 08:50 PM   #26
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if you have an auto, buy a tuner .... its heaven to shifting ... ive got a GT LSD and 10" tires and 1 - 2 scratches the tires if i floor it .... 3.73's too but yeah lol
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Old September 20th, 2010, 08:53 PM   #27
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sometimes I will down shift myself, for the most part i know where my rpms are at certain speeds so I now if I should or shouldnt downshift like that. I mean Im not going from 2 - 1 at 40mph or anything lol. And sometimes I get bored and will use O/D and 2nd to down shift to slow down ...
from a dead stop, I just floor it if needed. Usually it will auto downshift just fine, but if your to high of speed for the computer it wont, if its not that high ill do it myself ...
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Old September 20th, 2010, 08:58 PM   #28
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This is a sad read. I would only slap shift a rental car. Anyone slap shifting their own car with a stock trans, even with a tuner is playing foolish games.
Unless you have a C4 with a hammer shifter...which I assume everyone in this thread does not, stop slap shifting.
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Old September 20th, 2010, 11:00 PM   #29
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end vent
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Old September 20th, 2010, 11:11 PM   #30
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Originally Posted by superpede1 View Post
Do me a favor and try it for 3 months and then let me know what happened to your tranny capt. E-Tard!
Please never give any sort of mechanical advice. ever

Manually shifting the automatic 4r70w will do NO damage to the tranny. period
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Old September 20th, 2010, 11:13 PM   #31
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So what are we talking about? Manually changing gears? Im confused so im out.
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Old September 20th, 2010, 11:15 PM   #32
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i beleive were talking about going from 1 to 2 to 3 to d in a auto instead of starting in d
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Old September 20th, 2010, 11:38 PM   #33
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Originally Posted by jhills2 View Post
Please never give any sort of mechanical advice. ever

Manually shifting the automatic 4r70w will do NO damage to the tranny. period
whatever you say Mr. expert. Have fun doing it and let me know when you blow it up.
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Old September 20th, 2010, 11:41 PM   #34
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Like stated prior. I heard the 4r70 could handle manual shifting. Can anyone back this up? Granted if you're romping on any transmission it's going to fuck it up.
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Old September 20th, 2010, 11:46 PM   #35
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Ok, so I'm just wondering why a transmission would "blow up" from slap shifting?

When a tranny shifts it's a bunch of belts and clutches changing the ratio.
When it shifts on it's own it does that. AND when you shift it, it does the SAME THING.

So tell me what the difference is. Enlighten me.


Slap shifting is fine if you really want to.

Treating any stock tranny like shit will make it go bad sooner or later.
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Old September 20th, 2010, 11:51 PM   #36
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+1 v6kid
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Old September 20th, 2010, 11:51 PM   #37
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Slap shifting will not blow up your tranny. It will only slow down your shifting. People do it because they think it shifts faster because they "control" the rpms more. Though a lot of people that slap shift like to downshift also and that is where it puts a lot of stress on the tranny if done at high rpms. Manuals can do it if they rev match.
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Old September 20th, 2010, 11:52 PM   #38
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I know I'm being redundant, but I'm just trying to get all of the info in one post.
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Old September 20th, 2010, 11:53 PM   #39
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Originally Posted by v6kid View Post
Ok, so I'm just wondering why a transmission would "blow up" from slap shifting?

When a tranny shifts it's a bunch of belts and clutches changing the ratio.
When it shifts on it's own it does that. AND when you shift it, it does the SAME THING.

So tell me what the difference is. Enlighten me.


Slap shifting is fine if you really want to.

Treating any stock tranny like shit will make it go bad sooner or later.
slap shifting is pointless is mostly the point I was getting at...
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Old September 20th, 2010, 11:55 PM   #40
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Originally Posted by v6kid View Post
Ok, so I'm just wondering why a transmission would "blow up" from slap shifting?

When a tranny shifts it's a bunch of belts and clutches changing the ratio.
When it shifts on it's own it does that. AND when you shift it, it does the SAME THING.

So tell me what the difference is. Enlighten me.


Slap shifting is fine if you really want to.

Treating any stock tranny like shit will make it go bad sooner or later.
+1

Also the reason why people hear of others blowing/messing up their transmissions because of manually shifting an automatic is because of the excessive heat caused from not shifting the transmission when the computer wants to.

Say your stuck behind some really old couple on the street and your in 1st gear and they are going slow, lets just use an example of 30 mph and they are staying that speed now that your in 1st gear some wouldnt shift into 2nd to keep the rpms low thus causing extra heat the wouldn't have happened if you let the computer shift for you.

So essentially 4k rpm + staying in 1st gear + not letting the computer shift when it wants to = excessive heat in the transmission which leads to parts failure in the transmission because excessive heat + metal parts = failure after a while.

This is just an example.

Get a cooling method for just your transmission and do whatever you want
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