was wonder if the superchips actually work to improve power and fuel economy?Superchip or simular on 99 tahoe 4x4?
no all this stuff has been pretty much proven to be crap already and I hear lots of yap yap yap about improving power and economy, but that is b s it does not work like that. Ask your mechanic before bolting any of this junk in your car, after all if it was any good, it would be in new cars too and its not. sadly its greedy money grubbers stealing from hard working people with products that do not do what they claim on a stock engine (this is why) all the tests are done on high performance applications. Save your money, ask your mechanic what he thinks first.
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