SDC Blitz dual boost controller
 

Anybody know how to tune this damn thing?

WTF is gain, and what should I set it at? While we are at it. Do I set the ratio?

If it makes any difference. I have a single turbo'd FD, and would like to set it to run about 13 pounds of boost.

Also if anyone has english directions that would be nice.

Thanks

gain is to control boost spike

Uhhhh..okay. Any idea of what range to set at?

it just depends, i have the Greddy spec II, but when i set mine i jus drove around and keep messing with it till i got it right, if spike occurs then set it down, and if boost starts to die then turn it up a little. I dont really have a solid number for you, me and my 2 friends all have ours set at different numbers and are all running the same amount of boost. so you kinda jus have to play with it.

The settings are based upon your wastegate spring rate. I have a 10 pound spring and here is how I have mine set.

Set to WG

Channel 1 - 10psi
Manual
Set 0
Gain 28

Channel 2 - 12 psi
Manual
set 20 (adds 20% to spring - 10lb spring +20% = 12)
Gain 28

Channel 3 - 14 psi
Manual
Set 40
Gain 28

Channel 4 - 16 psi
Manual
Set 60
Gain 28

I havent started to mess with the gain yet since my boost builds fast and I have no spikes but I imagine there is some performance to be had here.

Of course as always this is just how I have it - not necessarily the right way...

Shawn

You have been a great help here thank you for getting me started.

Now the business :) I do not really know what my spring is set at. but the boost controller is showing me running a max of about 1.07 pounds of boost. So about 16pounds?

Does this mean my spring is a 16PSI spring?

I bought the car about 3 months ago, and was under the impression that the boost controller was working, but looks like it has not been set, and that it was only showing max boost. I am guessing the engine is tightly tuned if I did not even have the boost control on. Oh yah and lucky too? :D

Anyways, should I just try and set the "SET" to 5 and see which way the boost moves?

Can I set it -5 or something like that?

Sorry for the stupid quesitons, but I would rather sound like an idiot, than pop my engine.

turn the controller to off and see where you boost at, that should tell you your spring rate.

Thats just my point. I think it has been off all this time, and I didn't know it.

There are no settings in it at all. The only thing it was doing was reading max boost

You can probably adjust the spring tension on the wastegate depending on what brand. I adjusted mine down to 10 to make the math easy. The controller can only control the boost from spring weight to 2 times spring weight so you want to set your spring so that range meets your needs. I think some wastegates require the purchase/installation of a new spring.

Shawn