I started Performance Systems Manufacturing in 1994 with the development of the Supplemental PVC valve as a result of correcting a slow turbo spool up problem on my Buick GNX. Most of the other products we developed were out of need, since no one else was manufacturing or marketing them at that time. Performance Systems Manufacturing was the first in offering a commercially available cold air intake system in 1997, and was instrumental in educating the GSCA membership in the benefits of cold air induction over the then popular ram air systems many of the other vendors were selling. We specialize in products for the Turbo Regal and Gran Sport cars that preserve and provide increased performance from your car. Our products concentrate on performance, preventative maintenance, vehicle protection and restoration. Currently we have 6 unique products for the Turbo Regals, and a few items for the Gran Sports, some of which are not available from any other vendors. My professional engineering background and mechanical abilities have allowed me to insure you, that all of our products are designed and manufactured to the highest quality, are functional, fit correctly and perform as stated.
Since 2000, we towed the GNX to race events behind our '95 Dodge Cummins Ram. In '03, we purchased a '04 Dodge Ram with the 305 HP Cummins. I immediately began to think about a cold air intake for the truck. I was not impressed with the air intake kits available at that time as they appeared to take in hot underhood air. Placing a conical filter under the hood was the concept we used back in the late 80's and early 90's on the Buicks. That is old technology and I believed we could design a better system. In 2004, we real-world tested the stock, aftermarket systems and different combinations of our own design. The cold air combination that worked the best was tested during the '04-'05 winter in Colorado under all types of extreme weather. Our design passed the weather test and production began in the spring of '05. We made are debut at the '05 TDR May Madness event and dyno tested our system at that event in front of 50 or more TDR members. Our cold air intake kit increased horsepower and torque throughout the RPM range with 15-20 HP gains between 1800-2500 RPM.
Try one of our products. I can assure you that you won’t be disappointed in the performance, workmanship or quality.
Pete Tomka
GNX Test Car
My GNX was purchased new in November ‘87 with the intent of keeping the car stock looking while I make slight modifications to improve performance. In pure stock form, drag racing at our 5800 foot track, the car went 15.8 at 90 mph. This time was not very impressive since most stock GN’s were running 15.1 at 89 mph. I worked on the GNX making small changes and documenting every improvement in performance until 1997 when the engine began to detonate and eventually melted #1 spark plug tip. Part of the plug tip lodged between the valve and the valve seat. Around that time the GNX was going 12.7s at 106 mph. The valve covers were never removed from the engine until after that occurrence. With a new totally rebuild engine using the same stock appearing parts, the car will run in the 11.80s at 116 MPH using drag radials.
