Here a chassis dyno run of my car. HP at the rear wheel. It's an 88 3.2 with DME, still the STOCK chip in it. The only mod done to it are a set of Bursch headers with a custom muffler with dual outlet. On the intake side there is a K&N cone filter mounted directly to to the air flow meter. Everything else so far I know is stock. A custom chip can probably bring the HP up as it is running fairly rich at higher RPM.
If a chip can bring about 10hp that will put it close to 240hp at the crank.
