I'm on the 9lb Pulley. ...Stillen asked me to run this as I was only hitting 7.0-7.5 psi on their stock pulley....they were thinking that it was due to either my TP'S ( their theory if back pressure with the stock cats) or my climate/location.....With the 9lb pulley I'm hitting a max of 8.3psi @7300rpm. I know that when StillenZ34 started his tuning session he was running lean due to the increase of air from the A2A set up but he has an upgraded fuel system. ...I'm keeping my fingers crossed that the Stillen supplied pump and Injectors that originally came with the kit will be suffice for now...especially considering my limitations of fuel grades here.
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2013 Nismo Z34 / FI TT #091 / IG: @lilzilla_z34
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