ballsdeep Posted July 17, 2013 Share Posted July 17, 2013 (edited) I have fitted a used aem tru boost gauge/controller, now before I had the car mapped I set it up the best I knew how, and also asked my mapper to set it up! one setting I remember doing was inputting the wastegate spring to 4psi (7psi is installed) and then set the alarm among other things. So during the mapping session there was an issue with increasing the boost so it only made 260bhp from my na-t I was told this is possibly down to a faulty/damaged wastegate so the plan was to replace this. then a few days later pushing 2nd gear i hear a change in exhaust tone..? I though it was the external wastegate opening? This made me have a good look around and check everything was ok only to find the intercooler pipe had blown off! I decided to check the settings on the aem boost gauge/controller after i seen it get to 1bar and got a bit of a shock all the settings were silly high numbers??? I guess what I'm trying to say is if the solenoid for the boost controller was faulty would it replicate the same issues as a faulty wastegate? Or have I got 2 separate issues and need to replace both? Edited July 19, 2013 by ballsdeep (see edit history) Quote Link to comment Share on other sites More sharing options...
Gpro Posted July 19, 2013 Share Posted July 19, 2013 are you sure your intercooler pipe wasn't leaking when you got the car mapped? also what you mean you have a 7psi wastegate spring and inputting 4psi? The lowest boost you can possibly get is your wastegates spring. What duty have you got the boost controller on? Quote Link to comment Share on other sites More sharing options...
Pulley Posted July 19, 2013 Share Posted July 19, 2013 You went up to 1 bar? At 1 bar when I was running stock high compression I was developing over 400 Bhp Where is your boost gauge mounted? I have my boost, afr and egt gauges mounted so I can easily see them telling a story of my engines fuelling If your waste gate is mechanically setup to regulate a 7psi boost pressure I'd turn your boost controller off (my HKS controller when turned off allows my waste gate to operate on its own) And watch your boost gauge on a run Then turn it back on and set it to 7psi and see how it behaves then Quote Link to comment Share on other sites More sharing options...
ballsdeep Posted July 19, 2013 Author Share Posted July 19, 2013 are you sure your intercooler pipe wasn't leaking when you got the car mapped? also what you mean you have a 7psi wastegate spring and inputting 4psi? The lowest boost you can possibly get is your wastegates spring. What duty have you got the boost controller on? They said the vacuum test came back ok but surely it would have been leaking! could this alone make problems increasing boost? Instructions say to input 3psi less than the waste gate spring pressure? As for duty.. I'm clueless how all that works, so left that for them to set up! If anyone wants to explain I'm all ears.. Quote Link to comment Share on other sites More sharing options...
ballsdeep Posted July 19, 2013 Author Share Posted July 19, 2013 You went up to 1 bar? At 1 bar when I was running stock high compression I was developing over 400 Bhp Where is your boost gauge mounted? I have my boost, afr and egt gauges mounted so I can easily see them telling a story of my engines fuelling If your waste gate is mechanically setup to regulate a 7psi boost pressure I'd turn your boost controller off (my HKS controller when turned off allows my waste gate to operate on its own) And watch your boost gauge on a run Then turn it back on and set it to 7psi and see how it behaves then I'm pretty sure I saw more than 1bar!! Iv put my boost gauge where the clock was and afr on the ignition panel, was a good idea at the time, not so much now! I opened my wg and found a green spring installed but I'm struggling to find exactly what psi it is? How do I turn the controller off and just use it as a gauge?? I have the no:1 port of the solenoid Going to the turbo and side port of the wg and the no:2 port of the solenoid to the top of the wg! Quote Link to comment Share on other sites More sharing options...
EVLMKIV Posted July 21, 2013 Share Posted July 21, 2013 I think this might help by way of set up. You Tube also has a couple of other vids that will help. I have the same gauge and this vid made sense to me... Quote Link to comment Share on other sites More sharing options...
ballsdeep Posted November 10, 2013 Author Share Posted November 10, 2013 Still scratching my head with this one, after changing the wastegate to a precision pw46 with a 4.5psi spring installed the gauge is still storing the highest boost being 13psi my main issue is I can't lower the spr setting below 6.9psi?? from reading the instructions I should have it 3psi lower than the wg spring. May not be vital but worth mentioning I have it wired to my clock loom along with 4 other gauges. this I'm going to sort out today because I think its the cause of my battery going flat. Quote Link to comment Share on other sites More sharing options...
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