Stonkin Posted June 30, 2009 Share Posted June 30, 2009 Obviously during this hot weather our turbo cars are going to make slightly less boost. Mine is normally setup to run 1.4 bar but on average lately is making about 1.27 Is it acceptable to raise the duty on the boost controller by 2 or 3% to bring it back up to 1.4 or is it not a good idea. I'm not going to pretend to totally understand this subject, but feel i should. So any comments welcome Quote Link to comment Share on other sites More sharing options...
Calorus Posted June 30, 2009 Share Posted June 30, 2009 The boost controller works based on the boost directly. The only argument for lower boost in hot weather would be a softer spring causing the wastegate to open early thus dropping your pressures. But with a exhaust running at anything up to 800+ deg C, I can't see the 20 deg C ambient temperature difference making too much difference. You should still develop less, though because of the reduced intercooler efficiency. I think you'd just benefit from a re-set up on a dyno, to be honest. Quote Link to comment Share on other sites More sharing options...
Scott Posted June 30, 2009 Share Posted June 30, 2009 Surely your boost controller is faulty? Quote Link to comment Share on other sites More sharing options...
Stonkin Posted June 30, 2009 Author Share Posted June 30, 2009 dont believe the controller is faulty. When Ryan set it up at the beginning of the year for 1.4 it would make this, but the ambient temps were much less. Have noticed when giving it a run saturday that it was making about 1.27 - 1.3 and i presumed it was because of the increased air temps. I raised the duty from 60% to 63% and it was back to 1.4 Quote Link to comment Share on other sites More sharing options...
Scott Posted June 30, 2009 Share Posted June 30, 2009 I can't be sure but my limited understanding of how an EBC works tells me that it should hold the boost pressure regardless of the temperature. The sensor detects how much boost is being created.. 1.2 bar.. it then checks how much it should be making... 1.4 bar.. it then, automatically, closes the actuator/solenoid thing slightly to allow more boost pressure until it reaches the set figure. Once it hits the figure it fluctuates to keep that figure. Once you have set the duty etc of your boost controller to atain a certain value that should be it set. The boost controller should be taking care of the rest. If what i have said is not the case then what is the point of an EBC? Why not just have an MBC? I was always told the advantage was accuracy and no spikes etc. Quote Link to comment Share on other sites More sharing options...
Stonkin Posted June 30, 2009 Author Share Posted June 30, 2009 anyone else have any ideas? Quote Link to comment Share on other sites More sharing options...
Hermit Posted June 30, 2009 Share Posted June 30, 2009 My experience with boost controllers is pretty limited, but as I understand it, they really aren't as clever as some of you think Yes they look at the current boost, and depending on that and the settings, they will allow some percentage of the boost through to the wastegate. But it's well nigh impossible for them to 'lock on' to a particular boost level. EBCs' advantage over MBCs is that they can provide a smooth change in the percentage of boost allowed through to the wastegate. What would I do having noticed a change? I'd ask Ryan Quote Link to comment Share on other sites More sharing options...
j80leo Posted June 30, 2009 Share Posted June 30, 2009 (edited) From what i understand about the boost controller is it is set at a level to achieve the desired boost level eg 1.4 bar which is what ever setting on the controller. The warm temps do have an effect on boost outputs as it does the same on my car and many others. It is advised in warmer temps to turn the boost level down because the car produces heat and the outside temp is also very warm so it does not help the car any in cooling the air down through the intercooler, If you do turn the boost up you can creat more heat for the intercooler to cool and the car can have problems. The more heat in the chambers is not a good thing:) Sure one of the tech people will give a more detailed answer on how it works. Edited June 30, 2009 by j80leo (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris and Alana Posted June 30, 2009 Share Posted June 30, 2009 The temp does have an effect on boost pressure, well it has done for me for the 3 years nI have owned it anyway. I make just over 1 bar boost in the colder weather and in the summer I have been making .0.9bar boost. My boost reading has always dropped slightly when the weather gets warmer. Quote Link to comment Share on other sites More sharing options...
Stonkin Posted June 30, 2009 Author Share Posted June 30, 2009 thats how i understood it to j8oleo, think i'll take the duty back down a bit to be safe thanks for everyone's advice Quote Link to comment Share on other sites More sharing options...
j80leo Posted July 1, 2009 Share Posted July 1, 2009 thats how i understood it to j8oleo, think i'll take the duty back down a bit to be safe thanks for everyone's advice No worries at all fella glad to help Adam. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.