Ebay MBC
 

is anybody familiar with this manual boost controller?
http://cgi.ebay.com/ebaymotors/ws/eB...tem=2467611438


or this one....

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2467512650


thanks,
CAlvin

i have the later it is just spring /ball type boost controller

There is nothing that great about that...this stuff can be made at home depot with a valve in the plumbing section...the bottom one is a better price for about the same quality...First site $30.00+....Second site $7.00+...Home depot...about $5.00...you decide!

so how would i make my own boost controller with the ball and spring mech. like they use?

first one is bleed type I think. suck compared to ball / spring.

Don't bother with a bleed. It's noisy, and reduces response.
The ball and spring MBC works EVERY BIT AS WELL as the electonic ones. The only heason to have an electrocin one is to show people that you just wasted your money on it and diddn't put into something worthwhile like suspension. The only advantage of electronic is that you can adjust it from inside the car.
The ball/spring MBC can be prone to boost spiking if used at very hjigh boost levels (20+) but that doesn't apply to most 7 owners.

The MBC actually can be adjustable from iside the car, using a solonoid wired to a switch inside. You can use the solonoid to bypass the solonoid, going to stock levels, or get 2 MBC's (for 10 bucks, why not) and another solonoid, and have 3 slectable boost levels at the flick of a switch.

" Installing and using the Variable Boost Controller is much easier than modifying the wastegate on your car to control the boost!"

WTF???? This is a selection from the first ad. First off, people modify the watsegate to REDUCE boost. Second, it IS modifying the wastegate- by interrupring the singal to it. Sheesh. Ebay'ers.