wait, WHAT software? I thought chip tuning was about balls to the walls power?compu_85 said:More advanced will yield better starts, and software which changes the timing (which is controlled by the computer) will yield better economy.
-Jason
The same changes that yield more power during load can yield better econ during steady-state.FL2AK-tdi said:wait, WHAT software? I thought chip tuning was about balls to the walls power?
It can only be changed by loosening the cam pully and turning the pully relative to the cam.DieselDrink said:If my IP timing is advanced that is good. I also have a tune.
But can I check how my crank to camshaft timing is set? Can it be altered for better fuel econ? If so, how is it altered, mechanically or inherent in the chip tune?
I already have too many of those.whitedog said:This story would end in tears.
Yo Dog: Gotcha! Thanks.whitedog said:It can only be changed by loosening the cam pully and turning the pully relative to the cam.
Since this is an interference engine, there will be a point where pistons and valves will meet. This story would end in tears.
__. There's some other adjustment. I have the info on my home computer but "Cage" wrote up something in "Basic Settings" (I think) that alters some ECM-based timing. Somebody did it on my '02 sedan at a GTG; that car did 57MPG average over 130K miles - most tanks for the last 60-70K miles were 60-62 MPG, *best ever* was 64 but that was only 450 miles (full to reading 5/8ths) and I don't trust it to be really accurate.whitedog said:It can only be changed by loosening the cam pully and turning the pully relative to the cam.
The cam to crank relationship can only be changed mechanically. I think that you are thinking about the crank to pump timing.mrGutWrench said:__. There's some other adjustment. I have the info on my home computer but "Cage" wrote up something in "Basic Settings" (I think) that alters some ECM-based timing. Somebody did it on my '02 sedan at a GTG; that car did 57MPG average over 130K miles - most tanks for the last 60-70K miles were 60-62 MPG, *best ever* was 64 but that was only 450 miles (full to reading 5/8ths) and I don't trust it to be really accurate.
__. Sorry, I don't have a link to the reset procedure.
__. True. This isn't cam timing, it's some electronic offset for the injection pump timing. Sorry I can't access my file but I will by tomorrow PM. It's also *not* the idle setting you do with moving the sprocket on the injection pump with VAG-Com like when the timing belt has been changed.whitedog said:The cam to crank relationship can only be changed mechanically. (snip)
I most definitely would be interested in those type of figures. My '02 only gets in the mid 40's with my auto trans.mrGutWrench said:__. There's some other adjustment. I have the info on my home computer but "Cage" wrote up something in "Basic Settings" (I think) that alters some ECM-based timing. Somebody did it on my '02 sedan at a GTG; that car did 57MPG average over 130K miles - most tanks for the last 60-70K miles were 60-62 MPG, *best ever* was 64 but that was only 450 miles (full to reading 5/8ths) and I don't trust it to be really accurate.
__. Sorry, I don't have a link to the reset procedure.
That's probably all you're going to ever get. I've only heard of one guy here breaking 50 with an auto trans-and i'm not sure I believe it. My best ever is somethilike 48.5J.R. FEIK said:I most definitely would be interested in those type of figures. My '02 only gets in the mid 40's with my auto trans.
Cya
__. OK, here's the info that I found on here 5 years ago. It seemed to work on my '02 sedan. I'm going to do it on my '03 as soon as I get one of those tuits:Nico3d3 said:Any other news about this mod? I would be really interested in increasing my already good fuel economy.
__. We did this on my '02 sedan at a GTG maybe 4 years ago. We tried to increase the timing by 500 (as the process describes) but it kept tripping the CEL. SO we dropped it back by 50 - still CEL. Another 50 down, and no CEL so we then tried 25 up from that -- and the CEL came back on. So we settled on a number that would have been about 400 above the 5-digit factory setting. Good fuel economy, no CEL at that setting, and no other problems. Other people have reported that they could get the full 5 degrees and had no problems.You go to "login" type "12233" then push "do it" then push "adaptation" then type in channel "4" each 1 degree of advance is achieved by increasing the number by 100. Full advance is 5 degrees increase. My car runs best so far at 3 degrees. After you increase the number push "test" then push "save" It is that easy!
No you can't change the operating timing mechanically unless you adjust it so far out of spec that the ecu can't correct it in which case you will get a CEL light on the dash. Yes 350 would give you 3.5 degrees of advance. Also, I am assuming you are starting at factory setting which is set midpoint of the window. You can adjust up or down five degrees.
__. Thanks for that, Koz. That should be important (and it's something I didn't know).koz said:^^^^ Just a note on those settings...make sure the engine is fully hot (>85*C), or your numbers will be off. When I did mine, it was too cold and my timing was appearing more advanced than it was.
Weren't there some potential or at least theoretical problems that could arise from doing this? Would you happen to recall what those were?mrGutWrench said:__. OK, here's the info that I found on here 5 years ago. It seemed to work on my '02 sedan. I'm going to do it on my '03 as soon as I get one of those tuits:
Happy to contribute...besides, I learned it heremrGutWrench said:__. Thanks for that, Koz. That should be important (and it's something I didn't know).
From what I've read on the topic, it looks like there was a lot of concern in the beginning, but it seems like it was just what you described...theoretical. Here's the thread if anyone would like to read the blow by blow. And please remember, the thread started back in May of '03.TornadoRed said:Weren't there some potential or at least theoretical problems that could arise from doing this? Would you happen to recall what those were?