My fuel setup so far is as follows....
RC 550cc injectors..
walbro fuel pump..
hondata s200..

I will be running a stock gsr (rebuild) on 7-8 psi of boost...is an adjustable fpr needed to lower the duty cycle for these 550 cc injectors for 7psi or will i be ok without it...be honest i don't want to cut corners and if i need one for a good tune i will spend the extra money...i have just seen some setups without an adjustable regulator.
Thanks,
Dan

 

You will be fine with a stock fpr.

 

will having an adjustable fpr make it easier to tune for my setup or is it just not needed because i have big enough injectors to keep the duty cycle low enough already? I just want to make sure everything will be ok if i truly don't need one.

 

7 or 8 lbs on 550's you'll be fine with the stock fpr.