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Discussion Starter · #1 ·
I didn't know what to make this but.. Meh

For those who have the auto transmission. I have noticed when shifting in paddle mode that my 1-4 is good. You know higher rpm. Shift. Lower rpm. You know the basics. Now driving normally I have noticed that when I shift to 5th from 4th I notice that the rpms actually rise and not go down like usual. It's about like 500-700 rpm. And I'm no mechanic but I always thought higher gears the lower the rpm gets lol. Assuming we aren't racing
 

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From what I have noticed with mine is if the rpms are under 3000 the ecu will fully unlock the converter when shifting into a higher gear at lower speeds.
 

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Discussion Starter · #3 ·
Would that cause the rpm jump? If I drive normal I keep the rpm at about 2000-2500 but when I hit 5th say shifting at 2500 it'll jump to over 3000
 

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Depends where your foot is on the throttle. If I am in 5th and just push it a little the rpms jump up to help get the car going. It's the converter engaging and disengaging
 

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Discussion Starter · #5 ·
It's the same location. Not down any more not up anymore. I just found it strange. If it's because of the converter then I can see that
 

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Would that cause the rpm jump? If I drive normal I keep the rpm at about 2000-2500 but when I hit 5th say shifting at 2500 it'll jump to over 3000
Shifting at 2500 rpm is the reason, 30 mph in 5th will unlock the converter and allow the engine to get to a rpm where it is less likely to self detonate from LSPI.
 

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Discussion Starter · #7 ·
That makes sense! So basically it's a normal event and I'm actually using more gas by doing that! Ok now I know thanks!!
 

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Mine won't let me shift to certain gears at low rpm. If I am in 2nd say st 2k rpm it won't shift to 3rd. From 4th to 5th it will only let me shift when it's closer to 3k rpms.
 

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Mine won't let me shift to certain gears at low rpm. If I am in 2nd say st 2k rpm it won't shift to 3rd. From 4th to 5th it will only let me shift when it's closer to 3k rpms.
I wonder if that is something that is either in the tune or different for 2015. Mine can be manually shifted to 6th by 25 mph.
 

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I wonder if that is something that is either in the tune or different for 2015. Mine can be manually shifted to 6th by 25 mph.
Might be the 2015. I can't get it to shift to 6th at that speed at all. Mine waits for a certain rpm then will let you shift it.
 

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Discussion Starter · #11 ·
I've got a 14. It'll let me get to 6th at 35 if I wanted to.
 

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I just tried going into 6th at 35 and it will but you don't feel a change in rpm or gearing till I hit about 45 then you feel the drop. But it will not go into 6th below 35
 

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Might be the 2015. I can't get it to shift to 6th at that speed at all. Mine waits for a certain rpm then will let you shift it.
My A/T Koup is the same as @Forte5 (and I don't have an ECU tune like he does). When I drive in 'manual' mode the computer operates to lock out gear changes unless I am above a certain speed/rpm. I can't remember exactly what the speed/rpm levels are (and I can't test it at the moment because my baby is at the dealer's awaiting its new engine - see my post a few weeks back in the 'Performance' section), but I think its something like as follows:- 5th is locked out at anything below 50kmph and 6th is locked out at anything below 60-65kmph. My Koup was bought in July '14, but the manufacture date recorded under the bonnet is November '13.
 
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