I have a 12:1 fmu and my wot psi rate is 98 which i heard is high. Ok well im going to buy 315cc injects from pnoymahal and was woundering if the psi rate will become even worse? Or better? He said get the 5:1 or 6:1 disk. Im new to all this so help me out. Thanks

If youre running close to 100psi on stock injectors, that sounds normal. If youre going to run larger injectors, your fuel pressure settings should be lower.

you can't use the fmu for larger than stock injectors, b/c it is only a riser and needs the stock fpr to idle, and those fuel press are too high for larger injects. you'll need to get a fpr that takes care of both, like the sfmu.

So if i get the 6:1 recalibration kit from vortech I should be ok with the 315cc's?