Thread: Good Sidefeed Injectors

I would use the 740cc injs. Much easier for you to find a programmed ECU for them.

If you are runnung 4 bar 740cc injs, they are good for 580 WHP.

I would also use tha 300zx or Ford lightning MAF for this. Stay away from the Cobra MAF.

The SARD injs are great but you will need to change the inj plugs so if you want to keep things alittle stock and a little less work go 740cc injs.

No one's had a clean map for 740's at 4 bar. This is why I'm still running at 3 bar to clean up the tune, before Calum and I play with the tune at 4bar.

I would just go with larger injectors.

A friend mentioned something that makes sense to me a while back. When you raise the fuel pressure, the volume decreases, though you get better atomization.

Please explain the last paragragh as far as decrease volume as I disagree with your friends opinion. ( Just so you know most all car manufactures are now running 3.5 and 4 bar in their cars )


I have seen a few cars with the JWT ECU at 4 bar run run very close to perfect, I wounder if some of the people who are either to rich or to lean did not setup their car properly.

Either way, you might as well get that map from Calum in 4 bar on his realtime and then just clean it up for your cars setup.

The only volume decrease with pressure is the fuel pump. It is just how pumps work. Injectors however flow higher volume with higher pressure.

Calum doesn't have a 4bar setup for 740's. That's what we were intending to work on before I ended up in Jersey for work.

I had my friend clarify, he did correct and say that the pump is what decreases in volume, which shouldn't be that big a deal with at least a 255lph pump.

Well hurry up and start working on the 740cc 4bar program with Calum lol.

Let me know if you get that 4bar for the 740's, as that's what injector I'm running and I'd love to get to 4bar on my program.

Sorry guys, I'm in New Jersey until further notice (at least until April). My car's obviously taking the back burner up until I can go home and play with it, or ship it to MD.

bummer. I say ship it!

Glad I got nistune