the commissar! Posted April 6, 2011 Report Share Posted April 6, 2011 Idle shouldn't be lopey - mine was fine until I moved the cams. You can always PM me screen shots of your maps if you need assistance. You should have standardized the load & rpm maps so that they all equate - did you alter the scaling? Seem to be making some progress on evening out the timing, albeit at 18psi (data log underreports) - but now the boost flutters when at it's peak - I swapped out the Greddy spring for the stiffer version today - clearly still needs adjustment. Seems to show up under the MAF scale, the boost appears level in the log, but it was pulsing! reduced timing in the 56-62% range, that seems to be the ticket as far as the timing dip I had @ 5400rpm When I say lopey I'm not talking 60/70's era muscle car lopey, I mean that you can hear a slight change in the pitch of the exhaust tone and it sort of sing-songs up and down...the RPM is steady to where it is undetectable if it is changing on the dash gauge...It was not sing-song like that with the Volvo T5 stock tune...or maybe I couldn't hear it with the stock exhaust, that seems like so long ago... I started with the base performance maps and until recently didn't realize they were different...not sure why they would not have them standardized to begin with. Adjustable sure but they should have started the same...I sense some more laptop time in my near future... I'll get things sorted out as much as I can first and once I get a way to log my timing along with the other, I'll share for input...I can't log that at the moment...and once you pass a certain point, you have to play with timing and I, like you need to see and record exactly what it is doing. The butt only takes you so far in tuning and I'm past that... Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted April 6, 2011 Author Report Share Posted April 6, 2011 I believe the PCV kits that are sold now have been updated with the larger opening on the box. The Box and that hose were the same between the 02 and the 95 engines. (I replaced the entire PCV system less than 2 years ago on the 95) I think so - this is what I bought from Volvo within the last 2 years for mine Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted April 9, 2011 Author Report Share Posted April 9, 2011 Had the map pretty well sorted out, pretty even timing across the board but.... I had a 'flutter' over 18psi under part/mid throttle high load conditions. I thought it was the Greddy BOV at first, 'cos I've had to reset it before after large changes to the intake plumbing. Anyway, found evidence of pin holes in a couple of the seams & a seam crack @ the IAC port in the intake pipe (I moved the IAC, and it was stressing the pipe fitting). I decided to switch back to the NA manifold. Better low & mid range, but more timing pull with the same tune: I've played with the WOT & timing maps today, and improved it somewhat over the above graph, but definitely get more pull using the stock manifold Moved the cam timing back to EXH 4º ADV (from 6º), don't need so much advance with the stock manifold. Car feels good, but I'd like to get the timing back. Quote Link to comment Share on other sites More sharing options...
BlackT5m Posted April 10, 2011 Report Share Posted April 10, 2011 Adam is currently working on desensitizing my knock detection to help do away with my excessive timing pull issues. I'll let you know if it works out. Doug Quote Link to comment Share on other sites More sharing options...
dublin14 Posted April 10, 2011 Report Share Posted April 10, 2011 Adam is currently working on desensitizing my knock detection to help do away with my excessive timing pull issues. I'll let you know if it works out. Doug Hope that works out. Im really starting to be worried that this TT is just not that great when it comes to the 4.4M cars? Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted April 10, 2011 Author Report Share Posted April 10, 2011 Hope that works out. Im really starting to be worried that this TT is just not that great when it comes to the 4.4M cars? I don't know about that. There are frustrating elements, but the stock hardware is definitely a factor. Changing to a log manifold made a big difference to the amount of timing pull in the peak torque range, so finding ways to improve breathing are important. Once I get the later head on, I will run the exact same tune & see what happens. Curious to see what Adam can do about the sensitivity, though. Quote Link to comment Share on other sites More sharing options...
550 Posted April 10, 2011 Report Share Posted April 10, 2011 The thing about TT for me (I also have it remember) is that there is more to tuning than just a strict spark map and just a strict fuel map. It works for me and my car because I'm not really looking to get crazy with this thing. But for the few people trying to make some actual power it just seems to be holding them back. :-/ I guess my foray into megasquirt was an eye opener. Not to mention hearing about stock software on the GTO's is pretty insane what all is tuneable for them. Quote Link to comment Share on other sites More sharing options...
JCviggen Posted April 10, 2011 Report Share Posted April 10, 2011 (edited) The thing about TT for me (I also have it remember) is that there is more to tuning than just a strict spark map and just a strict fuel map. It works for me and my car because I'm not really looking to get crazy with this thing. But for the few people trying to make some actual power it just seems to be holding them back. :-/ There's nothing more to M4.X that would help you make more power. It's just not there. It's nevertheless possible to make well over 500hp with the stock ECU (and thus TT) I believe Sweden has a 700+ one (several probably) Just you need to know how I'm guessing from experience how the stuff behaves - what works and what doesn't. Remember it was never made specifically for "tuning", its OEM stuff. You're hacking it rather than using its intended function therein lies the difference. Edited April 10, 2011 by JCviggen 2 1 Quote Link to comment Share on other sites More sharing options...
Elliot Posted April 10, 2011 Report Share Posted April 10, 2011 Have you adjusted your timing values at idle?Also your main fuel map is just plain odd!There is alot to be gained from smoothing everything off IMO 1 Quote Link to comment Share on other sites More sharing options...
lookforjoe Posted April 11, 2011 Author Report Share Posted April 11, 2011 Have you adjusted your timing values at idle?Also your main fuel map is just plain odd!There is alot to be gained from smoothing everything off IMO In what way odd? Elaborate, please I appreciate any constructive input. Since these maps, I've evened out & lowered the timing in the 56-62% range, that's where it was getting pulled the most I've dropped the richer values off this one, as that was when I was trying to compensate for the fact that the system tries to maintain stoich under 90gs MAF flow, even if the boost is up 5-10psi Quote Link to comment Share on other sites More sharing options...
dublin14 Posted April 11, 2011 Report Share Posted April 11, 2011 I don't know about that. There are frustrating elements, but the stock hardware is definitely a factor. Changing to a log manifold made a big difference to the amount of timing pull in the peak torque range, so finding ways to improve breathing are important. Once I get the later head on, I will run the exact same tune & see what happens. Curious to see what Adam can do about the sensitivity, though. I have my head P&P'd and 3 angle valve job so that will help for sure. Log mani might be in the works. Quote Link to comment Share on other sites More sharing options...
550 Posted April 11, 2011 Report Share Posted April 11, 2011 There's nothing more to M4.X that would help you make more power. It's just not there. It's nevertheless possible to make well over 500hp with the stock ECU (and thus TT) I believe Sweden has a 700+ one (several probably) Just you need to know how I'm guessing from experience how the stuff behaves - what works and what doesn't. Remember it was never made specifically for "tuning", its OEM stuff. You're hacking it rather than using its intended function therein lies the difference. Adam specifically says he can turn down the sensitivity of the knock sensors. That would lead one to believe that there is more to m4.4. Quote Link to comment Share on other sites More sharing options...
magicaljake Posted April 11, 2011 Report Share Posted April 11, 2011 Adam specifically says he can turn down the sensitivity of the knock sensors. That would lead one to believe that there is more to m4.4. i like the sound of that Quote Link to comment Share on other sites More sharing options...
JCviggen Posted April 11, 2011 Report Share Posted April 11, 2011 Adam specifically says he can turn down the sensitivity of the knock sensors. That would lead one to believe that there is more to m4.4. In that case I would much prefer to disconnect them altogether and hook up an advanced knock detection kit which is around 300$ but will let you know exactly what's going on (if you're going to take away some of the ECU's timing correction ability you better make sure that at least YOU know what's going on) I do not believe changing the sensitivity is going to be a breakthrough in M4.4 tuning, but I could always be proven wrong. Still would prefer my method however. Quote Link to comment Share on other sites More sharing options...
550 Posted April 11, 2011 Report Share Posted April 11, 2011 In that case I would much prefer to disconnect them altogether and hook up an advanced knock detection kit which is around 300$ but will let you know exactly what's going on (if you're going to take away some of the ECU's timing correction ability you better make sure that at least YOU know what's going on) I do not believe changing the sensitivity is going to be a breakthrough in M4.4 tuning, but I could always be proven wrong. Still would prefer my method however. I'm only saying that if he has access to things like that, there must be more options as well. Quote Link to comment Share on other sites More sharing options...
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