Originally Posted by
JEFASOLD
While I can only attest to a 181 mm pulley, myself and several others found the A/F ratio to be running a little lean at the top and needed some mod to the fuel system. I personally added the SL55 pump and the free flow filter and adjustable regulator from NW and a modified fuel rail. Some have gone with larger injectors but as I understand it, this required some retuning. I would be curious to know if those who had no issue with stacked setups or 185 mm pulleys are using the Zeitronic meter and can verify good A/F ratios at the top.