Hypertech Chip Users, you probably want to read this.
Hypertech itself claims only marginal improvements for corvette applications. And they say that any particular car might actually perform worse rather than better than the stock program. They also list what engine mods their generic chips do and do not work with, and they themselves say that if you use their chips on an otherwise modded vette, you can expect it to be slower. They also say that their generic programs for year/model are not as good as custom tuned ones for your particular car. If you actually read everything they have to say, they do seem to be rather honest about it.
I'm running the Hypertech program in my LT4. I've only used an accelerometer to compare the stock and Hypertech programs. But it did measure a small horsepower increase that was a match for Hypertech's claims in this application (Hypertech lists the LT4 specifically as an 8hp improvement... marginal). This is not as legitimate as a dyno pull, of course.
So my experience with hypertech has been that everything seems to have done exactly what they said it would. Which is not much on a vette. And I notice there are only a few corvette years and models where they make any claim about horsepower increase. I just happen to own one of them.
That being said... I did not buy the Hypertech programmer for this feature. I bought it to reprogram the speedo after the installation of a non-stock ring and pinion. Small engine power improvements just came along with the package.
So I guess, in short, I wouldn't slam the Hypertech company. There are quite a few applications in other types of vehicles where they make a dramatic difference... particularly in less performance oriented cars. Just I wouldn't typically recommend Hypertech for corvette applications in general. They work really great if you need their other functions... like the speedo adjustment for a different rear end.
They were the cheapest and most effective route to adjusting my speedo on my LT4.
- Skant







