wut nos brand jets equal a 125 shot and do i have to go 2 steps colder for a shot like that

 

not sure on the jet sizing.... there is a chart on another page.... Damn i'm lazy... alright here it is:

"12secz's settings"
105hp------52--------27

"02trex's settings"
Nitrous---------------Fuel-----------------Actual WHP
52--------------------- 28 ---------------- 90, good a/f
54--------------------- 30 ---------------- 117, good a/f
73--------------------- 40 ---------------- 140, lean a/f
73--------------------- 43 ---------------- 150+ (tbd), good a/f

"Zex's Recomended jets sizing"
HP Shot----Nitrous----Fuel
55hp-------32--------17
65hp-------36--------19
75hp-------40--------21
85hp-------44--------23
95hp-------48--------25
105hp------52--------27
115hp------56--------29
125hp------60--------31
135hp------64--------33
145hp------68--------35
155hp------72--------37
165hp------76--------39
175hp------80--------41
185hp------84--------43
195hp------88--------45
205hp------92--------47

With all of these you'll still need to dyno tune with a good a/f number in the 12's to low 13's these jet sizing's are theoretics, your car is always unique!

and for a 125 shot you are right in-between one-step colder, and two-step plugs. two-step would be safer but daily driving would be slower. some people around here have been running 1 step on 125 and 150 shots for a few months with no problems... so its up to you i guess.

hope this helps...

Peace
-Eric

 

Yes, I use 54N and either 32 or 30 fuel for the "125-shot" on a Zex kit. For the 150, I use 73N 43F. Only running 1-step colder on both and hadn't had any issues. Edretti is also running one-step colder with 150-shot. Keep in mind that your clutch will start to slip if you go to 125 or 150 (although not too much with 125).

 

for NOS the 125 shot is 58/31... they recommend to use 2 step colder plugs for 150+ shots!

 

12 sec z were u runnin an nos kit

 

ZEX Wet Kit with NX Jets, 1 heat range cooler NGK's.
12.7 ET before retiring the kit to JSPEC350Z (Jason.)

NOS jets won't fit ZEX or NX Kits they are doing their own chart with completely different numbers, if your kit is NOS then research NOS jets they are readily available on the net and very accurate.

Peas!

 

what exactly do u have that yur running 12's, 12secz? cuz u got 400 hp plus and yur runnin 12's? I only got a Invidia Cat back and a Injen Cold air with a 75 shot Zex wet system and i'm runnin 12.4-12.5's all day....so i'dlike to know what set up u got goin...But hows that whole "borla" exhaust system werkin for u?
Cuz those borlas don't do much fur Imports....There mostly for american cars...u should try a J Spec exhaust..they seem to werk better for me...just wondering thanks...

 

You need to read more carefully. He ran a 12.7 then retired the kit to someone else, as it says in his post. In his sig, where you saw he has a Borla exhaust, you decided to ignore that he has 400 blown HP which means he now has boost. He is now supercharged and has not run it at the track yet.

 

ok i dont think u understand what i was trying to say...i was asking about the borla exhaust mostly but...i was talking about just all motor parts...not with boost...Even if u got boost...the exhuast system still has a part to do with the whole process...so mainly i was askin bout his car when it WAS all motor...but it's cool i was just trying to compare parts and see which would werk better or if i should change parts because they werk better....

 

so when do have to start thinkin about fuel and ignition upgrades, i.e. fuel pumps, fpr's, ignition retards?