Drivetrain The Official ALTA AccessPORT Thread
#3153
So back to the AccessPORT...
Chris, you have any ideas on the rpm surge under acceleration when shifting? I said before I didn't notice it in the non-TPS map, but I actually found that I do when under hard acceleration. It's not as noticeablle as it is in the TPS version where just slight acceleration or loading on the engine/turbo causes a rise in rpms just after disengaging clutch.
The problem is that you can't re-engage the clutch fast enough without causing the car to lurch. The rpms should drop immediately when the clutch pedal is pushed in - in preparation for the lower rpms needed on the next higher gear. I mean hey, that's how it's been for over a century right?
I am still on Stage 1 91 octane, but I heard others have this using higher stages. I do believe it may be mainly with 2007 MCS manual transmissions. I also have the JCW kit. Is there anything you can do before the dreaded July deadline? Maybe I should just call you on this. Thanks.
Chris, you have any ideas on the rpm surge under acceleration when shifting? I said before I didn't notice it in the non-TPS map, but I actually found that I do when under hard acceleration. It's not as noticeablle as it is in the TPS version where just slight acceleration or loading on the engine/turbo causes a rise in rpms just after disengaging clutch.
The problem is that you can't re-engage the clutch fast enough without causing the car to lurch. The rpms should drop immediately when the clutch pedal is pushed in - in preparation for the lower rpms needed on the next higher gear. I mean hey, that's how it's been for over a century right?
I am still on Stage 1 91 octane, but I heard others have this using higher stages. I do believe it may be mainly with 2007 MCS manual transmissions. I also have the JCW kit. Is there anything you can do before the dreaded July deadline? Maybe I should just call you on this. Thanks.
#3154
#3155
So back to the AccessPORT...
Chris, you have any ideas on the rpm surge under acceleration when shifting? I said before I didn't notice it in the non-TPS map, but I actually found that I do when under hard acceleration. It's not as noticeablle as it is in the TPS version where just slight acceleration or loading on the engine/turbo causes a rise in rpms just after disengaging clutch.
The problem is that you can't re-engage the clutch fast enough without causing the car to lurch. The rpms should drop immediately when the clutch pedal is pushed in - in preparation for the lower rpms needed on the next higher gear. I mean hey, that's how it's been for over a century right?
I am still on Stage 1 91 octane, but I heard others have this using higher stages. I do believe it may be mainly with 2007 MCS manual transmissions. I also have the JCW kit. Is there anything you can do before the dreaded July deadline? Maybe I should just call you on this. Thanks.
Chris, you have any ideas on the rpm surge under acceleration when shifting? I said before I didn't notice it in the non-TPS map, but I actually found that I do when under hard acceleration. It's not as noticeablle as it is in the TPS version where just slight acceleration or loading on the engine/turbo causes a rise in rpms just after disengaging clutch.
The problem is that you can't re-engage the clutch fast enough without causing the car to lurch. The rpms should drop immediately when the clutch pedal is pushed in - in preparation for the lower rpms needed on the next higher gear. I mean hey, that's how it's been for over a century right?
I am still on Stage 1 91 octane, but I heard others have this using higher stages. I do believe it may be mainly with 2007 MCS manual transmissions. I also have the JCW kit. Is there anything you can do before the dreaded July deadline? Maybe I should just call you on this. Thanks.
#3156
I sent a few datalogs to Jeff regarding this issue and never heard back. Should I send the info somewhere else?
#3157
#3158
Sounds like you guys figured out a solution. Care to elaborate?
#3159
3rd Gear
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I have a 2012 JCW w Alta CAI, Boost Inlet tube and FMIC.
What boost should I be hitting? I have the 92+ octane Stage 1 flash on my ECU.
I noticed my car has become less torquey and fast in the last few days. Not sure If i have a boost leak or something.
After a few datalogs to redline, from 3rd gear at 2000rpm the max boost I am hitting is
21.88 psi.
Does any one think a boost or vacuum leak can be my problem?
What boost should I be hitting? I have the 92+ octane Stage 1 flash on my ECU.
I noticed my car has become less torquey and fast in the last few days. Not sure If i have a boost leak or something.
After a few datalogs to redline, from 3rd gear at 2000rpm the max boost I am hitting is
21.88 psi.
Does any one think a boost or vacuum leak can be my problem?
#3160
#3161
Thanks for responding! Sent you a PM with info. Let me know if there is anything else you need.
#3162
We haven't quite figured out a solution for this yet. Try this, go to a stage 0 map and see if there's any differences, we are thinking it may be coming from the heavy factory flywheel, or maybe even just the different throttle maps if you're noticing it when you're shifting into gears.
#3163
We haven't quite figured out a solution for this yet. Try this, go to a stage 0 map and see if there's any differences, we are thinking it may be coming from the heavy factory flywheel, or maybe even just the different throttle maps if you're noticing it when you're shifting into gears.
If you haven't really figured it out yet, then you would be sending me a map as sort of a trial fix? A lighter flywheel is not standard, so it would seem there should be a separate map for that, not built into the standard collection of maps for my vehicle. I assume there is more to the story.
#3164
#3166
#3167
Stage 0
1. Should I install Stage 0 or go back to the stock map (I gather the map is the actually the same) before taking it in to the dealer. In other words, in the unlikely event that they check the ECU for an oil change, can they tell I have the Accessport if it's at Stage 0?
2. How much more difficult is it to remove the Accessport (unmarry?) than switch to Stage 0?
Thanks!
#3168
If it's the same I wonder what is the point to try Stage 0. I never had the problem with the stock tune.
#3169
#3170
I'm taking my car in to the dealer for an oil change (they have a special).
1. Should I install Stage 0 or go back to the stock map (I gather the map is the actually the same) before taking it in to the dealer. In other words, in the unlikely event that they check the ECU for an oil change, can they tell I have the Accessport if it's at Stage 0?
2. How much more difficult is it to remove the Accessport (unmarry?) than switch to Stage 0?
Thanks!
1. Should I install Stage 0 or go back to the stock map (I gather the map is the actually the same) before taking it in to the dealer. In other words, in the unlikely event that they check the ECU for an oil change, can they tell I have the Accessport if it's at Stage 0?
2. How much more difficult is it to remove the Accessport (unmarry?) than switch to Stage 0?
Thanks!
It takes just another 30 seconds or so to uninstall it compared to loading a stage 0 map.
The stage 0 map is really for doing datalogs comparing how the car is running compared to a custom map. A datalog can't be run on a car that the AP isn't married to.
#3172
You may want to try a can of Seafoam in a tank of gas and Seafoam is also making an aerosol specifically to spray into the intake. I have an '09 JCW with 47k miles. Just had the plugs changed under warranty. Apparently the service codes on your key for the JCW do not alert them to the 36k plug change. Once I asked, they were glad to do it.
I've had the AP in my car for 30k (93 octane, stage 1) and love it! I have averaged 30 mpg the entire time I have owned the car and can't imagine driving it without the AP. With the JCW, I'm not concerned about future support. It runs flawlessly now and any mods beyond my CAI would be pointless. It will break traction in 3rd gear now, any more power would be useless!
I've had the AP in my car for 30k (93 octane, stage 1) and love it! I have averaged 30 mpg the entire time I have owned the car and can't imagine driving it without the AP. With the JCW, I'm not concerned about future support. It runs flawlessly now and any mods beyond my CAI would be pointless. It will break traction in 3rd gear now, any more power would be useless!
#3174
Saw no difference from before using the AP. RPM's immediately drop like normal after clutch depression under load - no surges at all. Hope that helps. Thanks.