I need a local tuner
Registered User
iTrader: (3)
Joined: Nov 2002
Posts: 439
From: Blackhawk, CA
Car Info: 996 Turbo,Gallardo,BMW 335,125cc shifter kart,etc
Originally Posted by vaus
The Xede sounds like a very nice, robust, piggy back with very nice tuning software. I have to ask, however, how is the basic idea any different than the unichip? The unichip may be a bit simpler and the software isn't as user friendly, but its still the same basic piggy back. So what makes the Xede so much better and why don't the problems that applied with the unichip apply here? I know the Xede fixes the PTFB issue the early unichips had, so I'm mainly talking about the ECU learning around the piggy back tuning. Unichip users had to reset their ECU's fairly regularly to keep the tune from going to crap. What about the Xede fixes that?
Thanks
-- Ed
Thanks
-- Ed
The ECU does not "learn around" piggy-backs any more than it learns around its own fuel and spark timing maps. In other words, if the car is mis-mapped (either through reflash, XEDE, Unichip, ITC, etc,.) the factory ECU can eventually swap fuel maps, swap timing maps and thereby induce erratic knock correction values. Using a reset to clear up this learning isn't necessarily a good thing because it is this learning that is making the car run safely.
That said, the goal of any tuning platform is to provide a stable output over the course of time. If I tune a car today with an AIM of 16 and it comes back to me in two months complaining of hesitations with the AIM set to 7, either I didn't do my job or the car is/was running low grade gasoline. If it's still set to 16 or only drops to 15 or so, I can be reasonably be sure that the hesitation is caused by something else such as open/closed loop switchover. We've spend months and months beta tested open/closed loop fuel control switchover code for Ecutek and have finally gotten a handle on every single parameter that has anything to do with performance and drivability. This knowledge, of course, trickles its way down to XEDE tuning since we can replicate nearly all of the requirements to get what we want. Often without the XEDE user never knowing about it.
Shiv
________
Medical Marijuana Dispensaries
Last edited by Vishnu; Mar 7, 2011 at 04:52 AM.
I <3 White Girls
iTrader: (38)
Joined: Nov 2002
Posts: 26,491
From: Danville, CA
Car Info: E92 M3, E70, F32, E21
Originally Posted by Vishnu
Hi Ed,
The ECU does not "learn around" piggy-backs any more than it learns around its own fuel and spark timing maps. In other words, if the car is mis-mapped (either through reflash, XEDE, Unichip, ITC, etc,.) the factory ECU can eventually swap fuel maps, swap timing maps and thereby induce erratic knock correction values. Using a reset to clear up this learning isn't necessarily a good thing because it is this learning that is making the car run safely.
That said, the goal of any tuning platform is to provide a stable output over the course of time. If I tune a car today with an AIM of 16 and it comes back to me in two months complaining of hesitations with the AIM set to 7, either I didn't do my job or the car is/was running low grade gasoline. If it's still set to 16 or only drops to 15 or so, I can be reasonably be sure that the hesitation is caused by something else such as open/closed loop switchover. We've spend months and months beta tested open/closed loop fuel control switchover code for Ecutek and have finally gotten a handle on every single parameter that has anything to do with performance and drivability. This knowledge, of course, trickles its way down to XEDE tuning since we can replicate nearly all of the requirements to get what we want. Often without the XEDE user never knowing about it.
Shiv
The ECU does not "learn around" piggy-backs any more than it learns around its own fuel and spark timing maps. In other words, if the car is mis-mapped (either through reflash, XEDE, Unichip, ITC, etc,.) the factory ECU can eventually swap fuel maps, swap timing maps and thereby induce erratic knock correction values. Using a reset to clear up this learning isn't necessarily a good thing because it is this learning that is making the car run safely.
That said, the goal of any tuning platform is to provide a stable output over the course of time. If I tune a car today with an AIM of 16 and it comes back to me in two months complaining of hesitations with the AIM set to 7, either I didn't do my job or the car is/was running low grade gasoline. If it's still set to 16 or only drops to 15 or so, I can be reasonably be sure that the hesitation is caused by something else such as open/closed loop switchover. We've spend months and months beta tested open/closed loop fuel control switchover code for Ecutek and have finally gotten a handle on every single parameter that has anything to do with performance and drivability. This knowledge, of course, trickles its way down to XEDE tuning since we can replicate nearly all of the requirements to get what we want. Often without the XEDE user never knowing about it.
Shiv
Davon told me you were asking how I was doing.
I'm doin well and yourself?
-Zoeb
iClub Silver Vendor
iTrader: (12)
Joined: Mar 2003
Posts: 8,228
From: 631 Railroad Ave. Fairfield, CA
Car Info: A Laptop
Hi Shiv,
Thanks for clarifying. I always wondered why unichip users had to reset their ECU's periodically. It didn't really make sense because as you said, if the maps are within range and keep knock to a minimum, the stock ECU shouldn't have a problem with the system. So what you're saying is that most of the unichips that suffered from decaying tunes, were actually mis-mapped? Maybe what makes the Xede better isn't as much technology as gained knowledge of the Subaru ECU.
-- Ed
Thanks for clarifying. I always wondered why unichip users had to reset their ECU's periodically. It didn't really make sense because as you said, if the maps are within range and keep knock to a minimum, the stock ECU shouldn't have a problem with the system. So what you're saying is that most of the unichips that suffered from decaying tunes, were actually mis-mapped? Maybe what makes the Xede better isn't as much technology as gained knowledge of the Subaru ECU.
-- Ed
Originally Posted by Vishnu
Hi Ed,
The ECU does not "learn around" piggy-backs any more than it learns around its own fuel and spark timing maps. In other words, if the car is mis-mapped (either through reflash, XEDE, Unichip, ITC, etc,.) the factory ECU can eventually swap fuel maps, swap timing maps and thereby induce erratic knock correction values. Using a reset to clear up this learning isn't necessarily a good thing because it is this learning that is making the car run safely.
That said, the goal of any tuning platform is to provide a stable output over the course of time. If I tune a car today with an AIM of 16 and it comes back to me in two months complaining of hesitations with the AIM set to 7, either I didn't do my job or the car is/was running low grade gasoline. If it's still set to 16 or only drops to 15 or so, I can be reasonably be sure that the hesitation is caused by something else such as open/closed loop switchover. We've spend months and months beta tested open/closed loop fuel control switchover code for Ecutek and have finally gotten a handle on every single parameter that has anything to do with performance and drivability. This knowledge, of course, trickles its way down to XEDE tuning since we can replicate nearly all of the requirements to get what we want. Often without the XEDE user never knowing about it.
Shiv
The ECU does not "learn around" piggy-backs any more than it learns around its own fuel and spark timing maps. In other words, if the car is mis-mapped (either through reflash, XEDE, Unichip, ITC, etc,.) the factory ECU can eventually swap fuel maps, swap timing maps and thereby induce erratic knock correction values. Using a reset to clear up this learning isn't necessarily a good thing because it is this learning that is making the car run safely.
That said, the goal of any tuning platform is to provide a stable output over the course of time. If I tune a car today with an AIM of 16 and it comes back to me in two months complaining of hesitations with the AIM set to 7, either I didn't do my job or the car is/was running low grade gasoline. If it's still set to 16 or only drops to 15 or so, I can be reasonably be sure that the hesitation is caused by something else such as open/closed loop switchover. We've spend months and months beta tested open/closed loop fuel control switchover code for Ecutek and have finally gotten a handle on every single parameter that has anything to do with performance and drivability. This knowledge, of course, trickles its way down to XEDE tuning since we can replicate nearly all of the requirements to get what we want. Often without the XEDE user never knowing about it.
Shiv
Registered User
iTrader: (3)
Joined: Nov 2002
Posts: 439
From: Blackhawk, CA
Car Info: 996 Turbo,Gallardo,BMW 335,125cc shifter kart,etc
Originally Posted by vaus
Hi Shiv,
Thanks for clarifying. I always wondered why unichip users had to reset their ECU's periodically. It didn't really make sense because as you said, if the maps are within range and keep knock to a minimum, the stock ECU shouldn't have a problem with the system. So what you're saying is that most of the unichips that suffered from decaying tunes, were actually mis-mapped? Maybe what makes the Xede better isn't as much technology as gained knowledge of the Subaru ECU.
-- Ed
Thanks for clarifying. I always wondered why unichip users had to reset their ECU's periodically. It didn't really make sense because as you said, if the maps are within range and keep knock to a minimum, the stock ECU shouldn't have a problem with the system. So what you're saying is that most of the unichips that suffered from decaying tunes, were actually mis-mapped? Maybe what makes the Xede better isn't as much technology as gained knowledge of the Subaru ECU.
-- Ed
shiv
________
MARIJUANA STRAIN STRAWBERRY COUGH
Last edited by Vishnu; Mar 7, 2011 at 04:53 AM.
Thread Starter
Registered User
iTrader: (5)
Joined: Jul 2004
Posts: 248
From: SF Bay
Car Info: 02 WRX Wagon
Shiv (or any other Vishnu folk out there),
I don't know much about the Zede,
can you do a quick product description? I tried checking out your site, and couldn't get the info I was looking for.
thanks,
dan.
I don't know much about the Zede,
can you do a quick product description? I tried checking out your site, and couldn't get the info I was looking for.
thanks,
dan.
Guest
Posts: n/a
Originally Posted by BOOOST4
Shiv (or any other Vishnu folk out there),
I don't know much about the Zede,
can you do a quick product description? I tried checking out your site, and couldn't get the info I was looking for.
thanks,
dan.
I don't know much about the Zede,
can you do a quick product description? I tried checking out your site, and couldn't get the info I was looking for.
thanks,
dan.
Thread
Thread Starter
Forum
Replies
Last Post
iNfEk
Hawaii Classifieds
6
Aug 8, 2007 11:55 PM
Danny619Boy
Pacific Northwest
0
May 3, 2004 05:26 PM