I just got my 2.25 from carl at 928 and put on mu superpowerdyne and dam what a diffrence the boost comes in much earler like at 2k rpm i think it has a lot to do with carls billet imppliar and the 2.25 pulley. The only thing is i still only see 8-9 psi and i was seeing 7-8psi with my other pulley a 2.62. any ways the boost feels a lot stronger now. with my app with tuner to put snow water/methanol injection and incorp with my tune. i got a transgo shift kit i will have put in I think i could be easley runing low 15s and i hope that improves with water/meth injection

 

low 15's could be possible, depends on your gears tires and weight


what MAF, injectors and fuel pump are you running??

 

90mm lighting,#42 lbs lime top ford racing,walbro single 255lph.