need help
03-07-2005, 12:24 PM
#1
Newbie - Just Registered
Thread Starter
Join Date: Feb 2005
Posts: 13
need help
this is my current setup......
96 nissan maxima se
short ram intake
gutted catalyst converter w/ out piping after
act 6 puck clutch with heavy duty pressure plate
walbro gss342 fuel pump
nitrous 125 shot
this is what happend..... i clocked my car at the tracks and when i punch the nitrous button my car feels like its only at 50 shot nitrous.....my 125 shot is a wet.....the jets are 57 on the nitrous and 33 on the fuel....
when i punch on 75 shot dry is pulled harder then my 125 wet....
please help....i dont know whats wrong.....could it be that i should lower my fuel jet because when i ran a 100 shot nitrous, with stock fuel pump it pulled hard but with the fuel pump changed and running bigger shot nitrous my car became slower.....i punch on 3rd gear, fourth gear and fifth gear only....
please help thanks, russell
96 nissan maxima se
short ram intake
gutted catalyst converter w/ out piping after
act 6 puck clutch with heavy duty pressure plate
walbro gss342 fuel pump
nitrous 125 shot
this is what happend..... i clocked my car at the tracks and when i punch the nitrous button my car feels like its only at 50 shot nitrous.....my 125 shot is a wet.....the jets are 57 on the nitrous and 33 on the fuel....
when i punch on 75 shot dry is pulled harder then my 125 wet....
please help....i dont know whats wrong.....could it be that i should lower my fuel jet because when i ran a 100 shot nitrous, with stock fuel pump it pulled hard but with the fuel pump changed and running bigger shot nitrous my car became slower.....i punch on 3rd gear, fourth gear and fifth gear only....
please help thanks, russell
03-07-2005, 08:37 PM
#4
Do you have a bottle heater? When you ran the 75 or 100 shot shot was it in warm/hot weather and this 125 in cold winter weather. If so your bottle is way below proper pressure for nitrous to work properly it needs to be between 900-1050psi (depends on Manufacturer)?
03-08-2005, 12:27 AM
#5
Newbie - Just Registered
Thread Starter
Join Date: Feb 2005
Posts: 13
well the bottle was fresh from the shop from refil......when the bottle was at 75 and a 100 shot it was in my trunk for at least 2 1/2 hours before using it...its normally at 900psi....when i ran the 125 it was feeling like it was too rich....
03-08-2005, 04:33 AM
#6
Let me ask you again, how was the weather during each run and what was the pressure. Cause in warm / hot weather my bottle by itself is at 800+psi but in cold weather its in the 5xx. Maybe it was not upto pressure?
03-08-2005, 07:59 AM
#7
Guest
Posts: n/a
even on a full bottle, in the summer, with only a 75 shot, using a bottle heater made the difference between night and day for me. U gotta have a bottle heater kit, no questions asked to run a shot as big as 100 or 125 - i say you should have one for any shot.
03-08-2005, 04:42 PM
#9
Supporting Maxima.org Member
Join Date: Jan 2002
Posts: 3,371
do you have a Fuel pressure gauge and adjustable Fuel pressure regulator
with the walbro your fuel pressure will be higher than stock which will cause you to run rich. it raised my FP to 53psi
i would use this nitrous jet calculator
http://www.robietherobot.com/NitrousJetCalculator.htm
it says with 43psi fuel pressure you should have an .032 jet
but with 53psi you should have an .030 jet
but you need to check your fuel pressure to be sure
with the walbro your fuel pressure will be higher than stock which will cause you to run rich. it raised my FP to 53psi
i would use this nitrous jet calculator
http://www.robietherobot.com/NitrousJetCalculator.htm
it says with 43psi fuel pressure you should have an .032 jet
but with 53psi you should have an .030 jet
but you need to check your fuel pressure to be sure
