1) Halon Fire System.

We wanted extra security knowing we can put out a fire in all areas of the car with the pull of a lever. The Halon fire suppression system is a 5 lb unit from Lindsey Racing. We mounted it beside the Acu-sump. We utilize three nozzles. One is located in the front of the engine aiming towards the fuel rail area. The second nozzle is located directly under the steering wheel aiming at the driver. The third is located on the roll cage main hoop aiming at the fuel tank and lines.

2) MAF system with upgraded software mapped to specification.

We settled on a used APE MAF system. We sent our stage II software back to Autothority and had them make us some custom software. This went a little beyond their normal stage III software because of some of the additional mods we have done and the additional boost we wish to run.

3) Fuel Pressure Gauge.

You never really know what your fuel pressure is at full boost unless you have a gauge to read. Because the gauge is in the car (some wouldn't agree with this location) we plumbed it in stainless braided hose and aircraft fittings. This view shows the addition of the fuel pressure gauge and the "FIRE" pull lever for the halon system.

4) Softening the sway bars.

Since the car is lighter now, the sway bars are too stiff. Last time out at Hallett and Heartland park, the car was loose on the back end. We simply removed the rear bar completely and ran 3 seconds a lap faster. That was pretty interesting considering that the front bar is way to stiff especially by itself. We reduced both front and rear bar stiffness to 50% of the current rates.

5) Big Red Brakes.

We added Big Red calipers with the larger rotors on the front. The actual pad size is only 1/4" taller (same length) then the S4 pads but you also gain mechanical advantage from the 1/2" larger rotor. We use the stock 951 rear calipers and rotors. We use a proportioning valve to adjust the proper front/rear bias.

6) Air Fuel monitor from Lindsey Racing

This air fuel monitior provides two functions. You can read the duty cycle of your injectors to determine if they are over or under worked. You can also moniter the air/fuel ratio on the lower scale. This information can help you determine if you need additional fuel (larger injectors). The stock 951 injectors should be good for the 350hp range. We feel we are approaching at or beyond that point and need to monitor things. To large an injector can do more damage then good.

7) Replace connecting rod bearings.

We changed the connecting rod bearings again. Wear on #2 was minimal and the other 3 sets still looked practically new.

8) Wastegate.

We chose a Tial wastegate. Not the least expensive unit out there, but it is serviceable as units such as the delta-gate are not. Our new software is set for 1.1 bar or boost. The factory wastegate was not allowing us more then 14psi. The additional flow of the MAF in conjunction with the other previous mods was just to much for it. We installed a 1.1 bar spring.

We finished our first PCA Club Race for 2000 at Texas World Speedway. We were pleased with the car other then we were only achieving 14psi of boost. The new Tial should bring things up to 17psi and make for a few MPH where it counts. The softer sway bars seem to be just right.

We will be attending the Heartland Park DE April 14/15. We are also planning on driving the new Texas Motor Ranch the first weekend of May. We will be attending the Hallet PCA club race in May and who knows what after that.