Contour Enthusiasts Group Archives Forums Modifications Zetec Maintenance Optimized Zetec TB before and after pics

I used a TB from a '96 Tour Zetec. The extra material at the top allowed me to shape and polish the airhorn to eliminate any kind of step and to improve flow. Throttle plate is 57.6 mm diameter and flow is improved by about +20%. I have this one installed in a '00 ZX2 S/R.