Okay, seems like an easy thing to find...but I searched for more than an 1hr here on and google and haven't found it :

what's our stock fuel pressure? (I just want to double check that the jets I'll be useing are correct...I'll modify them if needed once I get a tune)

thanks!

 

Fuel pressure at idle is 51 PSI.

 

thanks Redondog!

...what about at WOT? (Does the fuel pressure drop? for N2O, isn't that the pressure you should use to calculate the proper jets to use)

 

There is no difference in the jet calculation results between 45 and 51 PSI. I've nevered measured actual fuel pressure at WOT but I've always assumed it was approx. 45 PSI. The best way to test if the jets are right is to use a Cipher or do a dyno run with an A/F measurement while spraying.