Originally posted by siueclipse

Originally posted by Kirby It's not bad for your motor, unless your fuel system does not adjust fast enough or something. There are no ill effects of running low boost in first and then high boost in a diff gear (or any other 2 stage setup really). The only way this would be an issue is if your turbo went from like 10psi to 20 psi in a second (this won't happen as the turbo will need time to build the boost).

Well.. obviously you have never done it. I used to run 10lbs through 1st gear. Then hit the switch once in second gear. I would jump from 10 to 20lbs in an instant. Now.. if I were to do this I would be going from 10lbs to 27lbs. In my mind, its just a big strain on a motor that doesn't need to be there. You should be able to launch the car well enough on high boost that you don't need to switch boost levels.

So you're telling me that your car goes from 10-20 psi in an instant? So you must be really stupid and hitting the switch running full throttle at full boost eeeh? It still takes a little time to get a 10 psi difference though... I just want to make sure that the guy's running duel stage controllers know that they can use those between gears to adjust the high boost setting without blowing the manifold.. And acctually I use a studder box on my car so it only builds about 10psi on the line and then when I take off it just goes on up from there. You may want to try that it really works well for launch control.