injectors

This is a conservative rating at 3 bar. * indicate side feed inj sizes that can be bought from Nissan, Nismo or Tomei. Alot of the sizes you can not get but are there to help you if you are looking at a cetain flow rate by going to 4 bar.


3 BAR = 44 PSI, All the Nissans with Fuel Presure Regulators operate at 3 bar.

4 BAR = 59 PSI Running at 4 bar is better than running at 3 bar. Here is why, you can get more WHP from your inj at 4 bar, there is no xtra cost for a 4 bar program from JWT, you get better drivability at 4 bar because of better fuel atomization and you car will do better at the emmisions station becasue of better fuel atomization.

All Nissan Side feed injs are high impedence
The GTIR 444cc Inj is low impedence

Side Feed Injs

23 cc = 16 WHP
46 cc = 31 WHP
93 cc = 63 WHP
139 cc = 94 WHP
185 cc = 125 WHP * Pink
231 cc = 156 WHP
259 cc = 175 WHP * Red
278 cc = 187 WHP
324 cc = 218 WHP
333 cc = 226 WHP * Grey

---

333 cc @ 4 bar = 261 WHP
370 cc = 250 WHP * Purple

---

370 cc @ 4 bar = 290 WHP
416 cc = 281 WHP
444 cc = 299 WHP * Brick Brown

---

444 cc @ 4 bar = 345 WHP
462 cc = 312 WHP
509 cc = 342 WHP
555 cc = 373 WHP * Yellow

---

555 cc @ 4 bar = 423 WHP
601 cc = 405 WHP * Yellow Tomei

---

601 cc @ 4 bar = 457 WHP
647 cc = 436 WHP
692 cc = 468 WHP
740 cc = 500 WHP * Red

---

740 cc @ 4 bar = 580 WHP

850 cc = 570 WHP SARD

---

850 cc @ 4 bar = 660 WHP

MSD Top Feed Injs

36 lb = 250 WHP
50 lb = 355 WHP
72 lb = 520 WHP
96 lb = 690 WHP

MSD Injs do not run right at 4 bar so don't try it.