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Bill:
I purchased the basic Boost Controller for $25. Not a big investment if it proved you get what you pay for. In reality, at the factory setting, it absolutely diminished the lag to the power band. I did bump it up and backed it off to see if the boost would be overtly affected. It fools the waste gate to close sooner but the onboard electronics prevent the boost from increasing very much at all. That's OK with me, particularly since I can't monitor the fuel/air mixture until I wire the Stochiometric Gauge in. This is critical. I have installed a boost gauge, however, and it essentially moved all readings to the right but held the peak about the same. I can't say what the hp increases are as I have not put in on a dyno as yet, but it FEELS stronger at lower rpm and revs up quicker.
I would say it was worth it to have more low end torque without the expense and concern of turning a very reliable engine into a nightmare. The mpg seems to be about the same. There is no doubt if you want to increase boost, overall horsepower and keep the mixture in the safe zone, you would be better off with a proven chip replacement or reprogramming.
David
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