Hey I am going to be upgrading to 650cc injectors along with DSMlink in the next few days. I have had a walbro 190 fuel pump for quite a while with no adjustable fpr and it seems to be fine so my question is will I need an afpr since I am going with bigger injectors now? It seems the only bolt on regulator is Buschur racings but it is almost 300 bucks and I don't have time to screw with fitting the other universal types. The car is not a daily driver so... Any suggestions? Thanks.