Power FC notes on the XS maps
12-21-01, 11:49 AM
#30
SPO,
With all due respect to XS, I doubt you're going to get the answer you want. There is no reason to have the trialing fire before the leading. If you compare your maps to the base maps, you'll see that in the -14 split areas, XS retarded leading timing but did nothing to trailing. Either they forgot, or didn't think it was important, or never really thought about the negative split issue. Most other negative split cells are the same or very close to the ones that were negative on the base map. Draw your own conclusions. Timing splits less than 10 or 12 but greater than or equal to 0 are perfectly legit as they are not considering J&S interations when programming.
Remember this assumes a cell with 5 is truly effecting a 5 degree before TDC ignition event. What I was hoping to learn from them is whether this is true. Chuck has posted suspicions to the contrary but I haven't had time to log the actual timing display to compare it to the map. Timing does tend to do things other than what the map says when idling. If there is, in effect, a base timing map similar to the injector, we may all be wrong.
Alan
With all due respect to XS, I doubt you're going to get the answer you want. There is no reason to have the trialing fire before the leading. If you compare your maps to the base maps, you'll see that in the -14 split areas, XS retarded leading timing but did nothing to trailing. Either they forgot, or didn't think it was important, or never really thought about the negative split issue. Most other negative split cells are the same or very close to the ones that were negative on the base map. Draw your own conclusions. Timing splits less than 10 or 12 but greater than or equal to 0 are perfectly legit as they are not considering J&S interations when programming.
Remember this assumes a cell with 5 is truly effecting a 5 degree before TDC ignition event. What I was hoping to learn from them is whether this is true. Chuck has posted suspicions to the contrary but I haven't had time to log the actual timing display to compare it to the map. Timing does tend to do things other than what the map says when idling. If there is, in effect, a base timing map similar to the injector, we may all be wrong.
Alan
07-24-02, 10:00 PM
#34
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long time still nothing
geez, You'd think by now they would have answered this question. I aslo have an XS tuned P-FC.
Considering the customer base here, I'd expect an answer. Maybe they got pissed off and stopped posting........
Considering the customer base here, I'd expect an answer. Maybe they got pissed off and stopped posting........
07-26-02, 04:17 AM
#35
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Im as quiet as a mouse....
one thing they did do right after looking over my datalogs is that I only had four or five cels at -1 split....i did not have the kind of split you all see in your maps.
other than that I found that the timing looked pretty aggressive over what my friend runs with almost identical mod lists.
j
one thing they did do right after looking over my datalogs is that I only had four or five cels at -1 split....i did not have the kind of split you all see in your maps.
other than that I found that the timing looked pretty aggressive over what my friend runs with almost identical mod lists.
j
07-27-02, 01:05 AM
#38
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UH HUH
Actually, I know a ton about product liability and I totally agree. If there is something wrong, XS sure as hell will not be here publishing an open letter confirming it. Based on that alone I conclude there is a problem.
Now the only problem is I have XS maps and I don't know how to fit it.
I have datalogit on the way (should be here next week).
So that gives me the need, the capability. The only thing missing the knowledge.....yeah the only thing....just one little detail.
Seabass, sounds like you know something. If you or anyone else would be so kind as to either PM me or post some additioanl info.
At the risk of rambling, I have found that the really good info is frequently not posted here as it makes people money. I have been asked not to post some info. Also I've been told directly that info will not be shared because it makes money for the person who knows it. Hey, that's no big deal I totally understand.
If someone has modified the timing splits and has run it for a while or has dynoed it and knows the thier change is effective,k a post here would be really really cool.
Now the only problem is I have XS maps and I don't know how to fit it.
I have datalogit on the way (should be here next week).
So that gives me the need, the capability. The only thing missing the knowledge.....yeah the only thing....just one little detail.
Seabass, sounds like you know something. If you or anyone else would be so kind as to either PM me or post some additioanl info.
At the risk of rambling, I have found that the really good info is frequently not posted here as it makes people money. I have been asked not to post some info. Also I've been told directly that info will not be shared because it makes money for the person who knows it. Hey, that's no big deal I totally understand.
If someone has modified the timing splits and has run it for a while or has dynoed it and knows the thier change is effective,k a post here would be really really cool.
07-27-02, 05:42 PM
#39
kortez
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This is a very old thread... the reason they don't care about this particular map is because they do not claim it to be theirs. The map I was refering to when I started this thread was the TO4S map in the download section not a mail order map. A bunch of us did a group buy on XS turbo kits and there was a misunderstanding about free maping of our PFC's. If you bought a PFC with the turbo kit, you got a free map for that kit. For those if us that already had PFC's we were provided the map above, but it did not from XS directly so there is no liability issue. Now if some of you have mail order maps from XS that have negative split issues that is different story.
07-28-02, 10:20 PM
#40
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there are alot of smart guy's on this forum, I don't claim to be one of them. join the datalogit group and use the compare function in the software to see differences in the maps and use the search function here, I think the split issue has come up many times.
good luck and be careful.
good luck and be careful.
08-03-02, 01:54 AM
#41
Hey, where did my $$$ go?
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Just for a little info, I blew my motor with a XS map that I mailed to them and blam it totally on thier tuning. They sent me and others that have stock SEQ twins a map for non seq twins. I blew my engine at about 8psi of boost at 3000 rpms.
Just thought I'd share. I share this info anytime I get the opportunity haha
STEPHEN
Just thought I'd share. I share this info anytime I get the opportunity haha
STEPHEN
08-03-02, 11:10 PM
#42
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Stephen,
please send me that map I would like to see it. I am wondering what they changed in the map in order to compensate for non-sequentials.
John
Jodeny@hotmail.com
please send me that map I would like to see it. I am wondering what they changed in the map in order to compensate for non-sequentials.
John
Jodeny@hotmail.com
08-03-02, 11:15 PM
#43
kortez
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Stephen,
please send me that map I would like to see it. I am wondering what they changed in the map in order to compensate for non-sequentials.
John
John, how many maps do you have? You must have quite a collection going now....
please send me that map I would like to see it. I am wondering what they changed in the map in order to compensate for non-sequentials.
John
John, how many maps do you have? You must have quite a collection going now....
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