2010 white diamond sedan, 6MT,all options. 641 RWHP/592 RWTQ
I am doing the 2.55 upper pulley swap soon and am unsure if the P valve needs to be capped or not? I have tried the search function but seems to be unclear. Some say do it, some say they have the above mod and show over 12PSI on the dyno without capping it. If the factory bleed off is set at 12 how can you show over 12 on the dyno? Sorry, I know this topic has been done, just wondering if there is any new relevant info, bad or good. To cap or not to cap? Thanks.