Jellybean Posted April 16, 2013 Share Posted April 16, 2013 Just out of curiosity, I have an Apexi AVCR boost controller, depending on the air temp outside you have to adjust the duty cycle to get the desired boost. If it is too cold out she can over boost or too warm out and she will under boost (She is setup based off the MKIV.com tuning guide), get very annoying adjusting the overall duty cycle and the Start duty cycles if she starts under/over boosting in X gear Is it possible to get some form of (after market ECU I presume you need) to adjust your boost to the desired level regardless of outside temps ; form of dynamic boost controller that is intelligent enough to adjust your duty cycle to your desired boost level Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 17, 2013 Share Posted April 17, 2013 turn you feed back speed up mate i found that it helps with over boosting and general solinoide responce, but you will always see a little differance but we are talking 0.0* ie if you are set to 1.1 boost i really only see differeance of say 1.08 - 1.12 (which is something like 1/2 a psi). also the avcr does what you are asking if it is set to learning mode it changeds the duty cycle accordinly, maybe you should set up again the gear judge and lower your start duty as i expect you may boost spike when changing gear Quote Link to comment Share on other sites More sharing options...
Jellybean Posted April 17, 2013 Author Share Posted April 17, 2013 Thanks, I will download the guide again and set it up again I don't think I coukd ever get her in self learning mode, xxxx My feedback speed of tge solenoid I reduced to 211111 I will double check her again, just concious of over boosting Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 17, 2013 Share Posted April 17, 2013 i had massive over boost on mine and upped the feed back speed to way above that i will let you know tonight what i have mine set too for referance Quote Link to comment Share on other sites More sharing options...
Jellybean Posted April 17, 2013 Author Share Posted April 17, 2013 i had massive over boost on mine and upped the feed back speed to way above that i will let you know tonight what i have mine set too for referance thanks My Duty cycle 45-48 mark @ 1.2 desired boost Feedback is 211111, I know the guide says 3 2 2 2 2 Start Duty, I mainly have to curb this on 3rd and 4th gear due to over boosting (up to minus 2 - 4) Everything get thrown out of wack when the Air Temperature either goes up or down, you have to mess around with the settings again Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 17, 2013 Share Posted April 17, 2013 how much are you going out then? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted April 17, 2013 Author Share Posted April 17, 2013 how much are you going out then? Now the outside air temp has increased she is falling well short of 1.2, during cold air temps she would over boost up to 1.3+ if you kept your foot in Everytime I get in the car I find myself having to keep messing with the duty cycle or Start duty cycles if she is over/under boosting in X Gear Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 17, 2013 Share Posted April 17, 2013 Okay you will need to get the start duties right, I have +10 +4 -2 -4 Also my feed back speed is set 8, 6, 5, 4 I noticed that with feed back speed up spool was improved hope this helps mate Quote Link to comment Share on other sites More sharing options...
Jellybean Posted April 17, 2013 Author Share Posted April 17, 2013 Thanks, what's your overall base duty cycle? Quote Link to comment Share on other sites More sharing options...
mellonman Posted April 18, 2013 Share Posted April 18, 2013 i very much doubt i will be able to help with that mate as i have a different exhaust a t67 .68 dbb turbo. but the settings above are more gear related then turbo and will be a good guide for you to start on. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted April 18, 2013 Author Share Posted April 18, 2013 Cool thanks, will give it a go Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 7, 2013 Share Posted May 7, 2013 how did you get on with this did my figures help? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted May 7, 2013 Author Share Posted May 7, 2013 how did you get on with this did my figures help? Sorry forgot to get back to you, she spools a lot quicker based on the FB settings; I reset my start Duties to 0, she is still peaking around 1.12 mark but a little less in most gears , I need to RAISE Duty Cycle Definitely an improvement for overtaking, she comes on song a lot quicker now; I need an oil change, engine and diff plus I think my exhaust I fitted has started leaking again; getting her serviced on Friday so will turn her up on the way home Quote Link to comment Share on other sites More sharing options...
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