Guessing Boost Levels

[Alpine TSi]

Real quick question here, I was wondering if there was a way to determine what boost you were running without having to make a fourth gear pull on the freeway. What I would like to know is if let's say I go to the track and have my boost set at what I know to be 15 pounds, and want to run some race gas and 20 pounds. How I would I know I am at 20 pounds without cranking up the MBC and making pass after pass somewhere else just to see? Now I know I should have probably just set it to 20 before I got there and not laid into the way there, but that is not the point. I just want to know if you can make boost adjustments on the fly without buying some big old expensive electronic boost controller or dual stage(I would like to buy a dual but kind of like mine now) controller.

Thanks in advance.

[A//// Guy]

Just try playing with how much boost you add vs. how much your turning the knob on the MBC... if it goes up two psi with half a turn then 4psi is a whole turn.... etc.

Thers no real way of knowing unless you drive it... plus theres creep issues and the like so theres no true way until you drive it.

[FORSFED]

Matt, there really isn't a surefire way of knowing. You can approximate that one turn of the boost controller is one pound of boost, but that isn't always the case...

[Alpine TSi]

Cool, I figured so. I will probably end up caving and buying a dual MBC. I can hook it up to that Power/Economy switch that isn't doing anything on my center console. Hee Hee

[FORSFED]

There you go, give that button a new meaning!

[MustGoFaster]

Originally posted by FORSFED@Jan 21 2004, 10:50 PM
There you go, give that button a new meaning!

[Shane@DBPerformance]

Put the gas in before you reach the track or put it in at the track and then leave and go test out on a highway.