injector Q?

[Frankenstien93]

this may sound like a stupid Q but if i have a set of 550cc injectors for and SR will they fit in my KADE? they look the same but do the two engines use the same fuel systems?

[j-z]

yeah theyre interchangable. theyll work.

[Frankenstien93]

now should i upgrade my fuel rail too or would it be ok if i still used the stock one? im haveing trouble finding a side feed rail all i can find is a top feel are they better?

[WDRacing]

The stock rail will work fine. 550's have been used with the stock rail plenty of times with no issues.

WD

[Frankenstien93]

ok thats good to know. does anyone know aprox what hp do those injector max at? thx in advanced

[virus77]

you can get a safe 350whp from them.

[lrb_2000]

here's something useful.

[WDRacing]

If you have 1 or 2 good fuel pumps and a good regulator you can increase the base pressure therby increasing the effective duty cycle. I cranked mine to 55 with vacuum and was able to boost my car to 19-20 psi with 42lb injectors. My AFR over 4800 started to lean out to almost 13:1 though. So you need to really be careful, I have a wideband and a knockmetter so...

This will be different on every car, I'm just giving an example.

[Florida240sx]

I got my tomei 555cc injectors from Mark who had an SR20det.... Direct drop in...make sure you don't tear the orings