Thread: ve fuel psi

i ran my ve on the dyno recently,and recorded 158.3hp...(2.5 ssac,2.5 catback,calum basic,stock cams,255 lph,light weight flywheel,nismo fpr and
n60 maf)they said my air/fuel was lean in the 14.5-15.0 range..fuel psi was at 43psi then bump to 45psi...what could be making me run lean?i just put a innovate lc-1 in to make sure of air/fuel and it was running real lean at wot,so i bumped up fuel psi to 53psi and now its running at 13.0-13.7range......is something wrong,im thinking maybe wrong fuel bins in the rom...please help

have u dynoed it since u up the pressure?

sounds like a maf problem

just recently got the maf from happynole,he said it worked fine,i also soldered all the wires for a better connection,double checked them too.i guess i might switch back to the de maf to see what it does......thats alot of work though....

naw man haven't dynoed yet maybe this weekend....im thinking it might run better

whats your maf voltage at idle with the car warmed up?

haven't checked yet...

its agood possiblity you will have to add some k value in your bin to get you where you want. i took the stock calum bin for a sr20ve and have been messing with it all week and i had to add 4k to the value. now she pulls 14.7-14.9 afr with out using the stock o2 sensor and just crusing.

i dont have the software to do that,can you help

if your not got the right file in your ecu for the maf, then that is def your problem.

there is more air passing thru that maf with a lower voltage which makes it run lean.