Still Having Turbo Problems

[dj_dee99]

Yeah, I don\'t think I have very good settings on the SBC at the moment. It\'s currently on:
Warn = 0.8
Gain = 2
Ratio = 40
Scramble = off
 
Are there any better settings worth trying out?
 
I\'m not sure of where you can just set the boost value, on these.
 
I kept the gain quite low in the hope of it not hitting high boost so fast. Also in the set of instructions I have, it says that smaller & twin turbos spool up faster & therefore should have a lower gain setting than larger or single turbos.

[Oedipus Rex]

the ratio is where the actual boost control is set. I suggest bringing that down to around 25 and see what that does for you. I ran mine at 35 on stock twins and that seemed to bring it to around.9

[dj_dee99]

Thanks!:Thumbs-up  Will give that a go. Is the gain best left at 2, or should I have that a little higher?

[Oedipus Rex]

to be honest I never played around with the gain too much I had it at 25 and it was fine for me, spooled ok and didn\'t overboost on the whole so I left it at that. I would say that as wellas setting the warn you can set it to open the wastegate fully if it goes over a certain level but I don\'t remember what the setting was.

[dj_dee99]

Yeah, is that the ratio reduction that\'s available in the warn settings, where you can get it to reduce boost by a chosen percentage if it hits the warn level.
 
I think I\'m gonna have a few test runs in a bit. Will set ratio at 25 and gain at 0 to begin with, then I\'ll see what effects I get from moving the gain setting up.

[dj_dee99]

Well, a bit of an update.

I\'ve pretty much got the Boost controller settings spot on, now. Pulls nicely & peaks at 0.85.

BUT.....................

once it gets to 4500 rpm, the boost drops to between 0.55 and 0.6 bar. and stays around there.

So, does this mean I\'m am running sequential after all, and the 2nd turbo isn\'t doing anything? Or is it running non-sequential (as there\'s no pressure chamber, etc) and something else is going on?

:confused: :confused:

[peterwolds]

interesting /informative comments here cheers,get a bit of mooing on mine,on way back from RS3 gave mine a kicking revs upto 7000 and didnt feel 2nd turbo come on - need to get this looked at after holidays (dont have a boost controller)
Pete