View Full Version : Program switching thoughts....
BaNmAnS4
09-01-2011, 12:44 PM
I love the idea that I can switch programs at will, it is awesome! I'm curious though, has anyone else switched to stock just to feel the difference, and find it hard to feel? I switched to stock and to me it still almost feels the same.... any others?
audisarecool
09-01-2011, 01:31 PM
I'm pretty sure it takes the ECU a couple miles to adjust when switching programs, could that be it?
Leave it stock for a week and then go back to power mode, I guarantee you won't be saying the same thing..
dreaddontdie
09-01-2011, 02:41 PM
I'm pretty sure it takes the ECU a couple miles to adjust when switching programs, could that be it?
Leave it stock for a week and then go back to power mode, I guarantee you won't be saying the same thing..
especially if you frequently rev up past 5K RPM... others have observed a big difference on the top end with the tune...
Keith@APR
09-01-2011, 02:57 PM
especially if you frequently rev up past 5K RPM... others have observed a big difference on the top end with the tune...
you need to give it 30 miles to fully read in after switching. The ecu has adaptation channels that have to relearn after changing programs.
BaNmAnS4
09-01-2011, 03:38 PM
you need to give it 30 miles to fully read in after switching. The ecu has adaptation channels that have to relearn after changing programs.
Good to know Keith, thanks for the response!
Axxlrod
09-01-2011, 04:34 PM
The only reason why you'd want program switching that I can think of is when you don't want your dealer to know you've added a tune to your car. Other than that why would anybody want to switch their car back to stock tune when they've spent the money for a custom tune. In addition, hiding the tune from your dealer is worthless if you've put the pulley on your car, as the dealer will know you've tuned it if there is an aftermarket pulley there.
Am I missing something?
PGP128
09-01-2011, 04:47 PM
Or even just by telling your dealer not to flash your ECU with updates - will that give away that you have a tune as well? Not sure how often ECU updates are delivered by Audi.
Leor604
09-01-2011, 04:55 PM
The only reason why you'd want program switching that I can think of is when you don't want your dealer to know you've added a tune to your car. Other than that why would anybody want to switch their car back to stock tune when they've spent the money for a custom tune. In addition, hiding the tune from your dealer is worthless if you've put the pulley on your car, as the dealer will know you've tuned it if there is an aftermarket pulley there.
Am I missing something?
Up here in the frozen north, we don't always need max. power (think wet, snowy, icy roads) so the ability to save some bucks on cheap(er) gas is a consideration for some.
Nighthawk
09-01-2011, 06:20 PM
you need to give it 30 miles to fully read in after switching. The ecu has adaptation channels that have to relearn after changing programs.
Keith,
Does it relearn in every mode every time you switch? Or just the first time you switch to a mode?
Stubek
09-01-2011, 06:52 PM
I'm in an A4, but I have used stock a few times, mostly for going to the dealer for service and I have used valet a few times. totally worth having program switching
BaNmAnS4
09-01-2011, 09:24 PM
Keith,
Does it relearn in every mode every time you switch? Or just the first time you switch to a mode?
Exactly the same thing I was wondering...
NunyaBiz
09-01-2011, 09:53 PM
The only reason why you'd want program switching that I can think of is when you don't want your dealer to know you've added a tune to your car. Other than that why would anybody want to switch their car back to stock tune when they've spent the money for a custom tune. In addition, hiding the tune from your dealer is worthless if you've put the pulley on your car, as the dealer will know you've tuned it if there is an aftermarket pulley there.
Am I missing something?
If a tech at the dealer can see the difference between the pulleys he needs a raise asap. Visually it's extremely difficult to tell the difference.
Chestlock
09-01-2011, 10:52 PM
The only reason why you'd want program switching that I can think of is when you don't want your dealer to know you've added a tune to your car. Other than that why would anybody want to switch their car back to stock tune when they've spent the money for a custom tune. In addition, hiding the tune from your dealer is worthless if you've put the pulley on your car, as the dealer will know you've tuned it if there is an aftermarket pulley there.
Am I missing something?
Another reason: Around here, 94 Octane is widely available at Chevron, enabling the use of the 93 tune. Go south into the US, and 91 is usually what you find.
redrocker55
09-02-2011, 04:13 AM
Keith,
Does it relearn in every mode every time you switch? Or just the first time you switch to a mode?
I've had program switching for about 2 weeks now and I would say yes...each time you switch it will take a while to fully adapt. Although you will def notice some change right after the switch.
CBRmatt600
09-02-2011, 04:33 AM
Another reason: Around here, 94 Octane is widely available at Chevron, enabling the use of the 93 tune. Go south into the US, and 91 is usually what you find.
I've lived in the US my entire life (North and South) and have only stumbled upon a gas station that didn't have 93 octane one time. It was in the middle of nowhere South Carolina. They did however have CAM2 race fuel at that gas station.
Stubek
09-02-2011, 05:48 AM
program switching is also good if you normally drive in 91/93 and then go for a track day and buy that good ole 100 stuff at the track.
Deckdout2
09-02-2011, 06:18 AM
I've lived in the US my entire life (North and South) and have only stumbled upon a gas station that didn't have 93 octane one time. It was in the middle of nowhere South Carolina. They did however have CAM2 race fuel at that gas station.
That was your first problem........you were in South Carolina. lol
program switching is also good if you normally drive in 91/93 and then go for a track day and buy that good ole 100 stuff at the track.
This would be my main use for it. I just got my ECU back for beta testing, and I would primarily run 93 Oct, but would really only switch to 100 Oct for dyno testing, or the track.
Or even just by telling your dealer not to flash your ECU with updates - will that give away that you have a tune as well? Not sure how often ECU updates are delivered by Audi.
my ecu was updated from audi on a service, and it did not remove the apr 91 tune.
Chestlock
09-02-2011, 09:48 AM
I've lived in the US my entire life (North and South) and have only stumbled upon a gas station that didn't have 93 octane one time. It was in the middle of nowhere South Carolina. They did however have CAM2 race fuel at that gas station.
I'll qualify by adding west coast....
CBRmatt600
09-02-2011, 10:20 AM
I'll qualify by adding west coast....
Yeah I wouldn't know that, I've been to most states but never with my car so I didn't have to purchase fuel at any point.
Axxlrod
09-02-2011, 10:34 AM
Here in CA, 91 is the highest octane you can find. Yes, there are a few stations that sell 100+ octane race fuel, but they are very very few.
So if you have the pulley and switch back to the stock program, what happens? Will you get a CEL since the pulley produces a higher boost than the stock program allows?
Keith@APR
09-02-2011, 10:58 AM
Here in CA, 91 is the highest octane you can find. Yes, there are a few stations that sell 100+ octane race fuel, but they are very very few.
So if you have the pulley and switch back to the stock program, what happens? Will you get a CEL since the pulley produces a higher boost than the stock program allows?
Nope, the ecu figures it out just fine and just dumps more boost than it would without the pulley resulting in the same operation as without a pulley.
GTSurgery
09-02-2011, 11:03 AM
Here in CA, 91 is the highest octane you can find. Yes, there are a few stations that sell 100+ octane race fuel, but they are very very few.
So if you have the pulley and switch back to the stock program, what happens? Will you get a CEL since the pulley produces a higher boost than the stock program allows?
From what I have read, you won't get a CEL. The stock program just dumps the extra boost.