ok guy im looking to upgrade for my rc 440s they too small for my current setup im at 101% dutycycle at full boost which is a little high so im just gonna up grade whats the full specs as far as oring sizes and hight of the injectors im looking at some from a company called fiveomotorsports.com
personally had good luck with them in the past (bought some 1000cc's from them for my neon)
http://www.fiveomotorsport.com/impor...s/?itemid=1252
these will support what im looking for just want to know if they will fit into the stock mani and rail
thanks
taylor

 

im guessing those are for an evo. they look a bit too long imo, but they might work. and if those are for an evo, im thinkin you wouldnt have to get new clips considering they use Denso as well. it tells you the size on the site, but im not sure what the stock size is.

 

I don't know the precise injector size spec's but Five-O does, as do RCE, Deatschwerks, et al. Why not call any of them and ask about your options?

 

it will be the same price to get a set of deatschwerks as the ones you listed. mine as well get ones that you know fit, are plug and play, and have been flow tested

 

i have some rc engineering 650 cc injectors w/ pig tails for sale. they are good for over 400 whp and an 11.7 quarter mile without a return setup. pm me if you are interested.

 

How did you calculate your injector duty cycle?

There is no way you injector is running a 101% duty cycle first off an injector can only run 100% max also if you are trying to say you are running a 100% duty cycle its impossible, the injector would be open all the time and literally pouring fuel in your engine. I can’t remember exact number but after you reach the high 80's% or low 90's% the injector starts becoming sporadic and staying open anyway. Please explain what you are running i.e. turbo, what other fuel mods you have, and other mods.

 

Hes prob getting his idc from the fic which can give some goofy idcs when I was runnin it I got 160% idc once lol

 

right on the head
fic is bascially saying i maxed the injectors out so i need to upgrade them or convince my buddy he needs to spend an extra 400 on a return kit instead of injectors imo return line is better but he doesnt want to so im not gonna make him

 

FWIW, when I was running the APR X-1 it reported accurate IDC and my 440cc inj's were hitting 95% IDC at 11.5:1 AFR with 7psi and ~280BHP. This was using the oem fuel system and pressure. You should be able to use this info to help calculate the required fuel pressure or new inj size for your app. If you're planning to run more than 8psi I'd go with bigger injectors even with a FPR & return kit.

 

Check these links:

http://injector-rehab.com/shop/idc.html



http://www.megamanual.com/v22manual/minj.htm



I am just trying to help show you the principles of injector operation so you can truly make an informed decision of what your actual need/requirement is.
BTW this was megasquirs website for the 2nd link just explaining fuel systems and calculations.