How Much HP/Boost PSI Will 525cc injectors handle?

[jmwenick]

Just wondering on the MSD 50#/525cc injectors. I would like to know the most HP they can support. Thanks

[veilside180sx]

http://www.sdsefi.com/techffhp.htm

According to this they will be 100% duty cycle at 364 crank hp.

[:: orion ::]

Although the math says ~364, guys have done closer to 350rwhp with 50lb injectors.

I wouldn't drive it daily at that power level, but I'd run down the 1/4 mile track making 340rwhp with no worries.

...and to gauge what boost that would be at...I'd guess about 15psi from a T3/T4. It really depends on what turbo you choose, and the trim, turbine wheel and A/R, etc...but generally, you'll do 350rwhp at 15psi or so with your standard T3/T4 50-trim .63 A/R.

- Brian

[jmwenick]

Thanks guys for you're help, my goal is to be in the 300/350hp range so I think these injectors will work, now about the money.....

[Florida240sx]

I got me some tomei 555cc coming to me

[jmwenick]

Where'd you get them, how much, and are the side/top feed?

[Florida240sx]

Got them off the the classified section here,little over 300.side feed simple drop in. http://www.240sxmotoring.com/to55inforsr.html Another guy sold his for about 320 right after I got mine.That's our sponsor link.I've seen them cheaper on another site but don't know where.