[Frankenstein]

Anyone seen or used this? Seems to be pretty legit, but looks ghetto.

http://www.dawesdevices.com/boost.html

Obviously can't set it on the fly from the cockpit, but for $35 I may give it a shot. It seems better than the other valve type jobs that just squish the pressure signal. It appears that this is basically just an intermediate pop off valve that will hold pressure until a certain point, then let the full signal hit the wastegate.

 

[XCELR8]

All manual boost controllers operate in the same way as this product. Because they do not allow any pressure against the wastegate spring until the preset boost limit is hit, you get maximum spoolup but you have to keep the hoses short as possible to prevent boost spiking. There are even some MBCs that allow you to switch between two boost settings (see http://www.racetep.com/turboxs.html ). It's legit and the price is right.

 

[Frankenstein]

Thanks X, I think I will give 'er a whirl.

Most of the MBC's I have seen are even more ghetto. They just have a gate valve of some sort that diminishes the boost signal. Not a ball and spring like this one.

 

[XCELR8]

You're right. I should have said many, rather than all.

 

[Rob_O]

Boost controllers

Do a search for Gus Mahon, he has the part #s and instructions for making that same boost controller on his home page (as well as how to build a fast chrysler minivan)

I'm using this boost controller on my colt, it fluctuates a bit (~1 PSI) but I think that's because I made the bleed hole too big. For <$10 in parts I can always make another one

Rob_O

 

[BLKMGK]

http://www.autospeed.com/A_0685/page1.html