Q: What do you know about the performance computer chips available nowadays? Are they legal? Will it void the warranty? Are they easy to install?
A: I put a Hypertech performance chip into my 1994 Pontiac Trans-Am LT1, and it works great. I was able to raise the rpm level before the rev-limiter kicks in and also eliminate the 112-mph speed limit, too. I added Z-rated tires and the car is now capable of about 148 mph. I really noticed a big change in performance, so it worked for me.
These chips work by maximizing air-fuel ratios for best overall performance, rpm limits and things like that. There are several companies that sell performance chips, so check out Hypertech and Superchips. Both offer quality products, and they are very easy to install using the onboard computer “plug” located under your dashboard. Mine took about five minutes to install.
As for voiding the warranty, no. Federal law prohibits a dealer from voiding your warranty just because you are using aftermarket parts, with only two exceptions: A warranty claim can be denied if the part is the cause of damage, or if it adversely affects the emissions or the emissions system. Expect to pay about $350 for a new performance chip.