what size injecters do i need for no more than 200hp if that, for a 98 civic sohc with just 5lbs of boost

 

this should help:

https://www.hondacivicforum.com/foru...ad.php?t=16039

 

you really should jump to at least 270s, or better yet, 310s, but you can get away with the stock 240s with a big *** fuel pump (Walbro 255)

 

sorry to thread jack, but I just bought some 450's and plan to run 170-180whp. Are these going to be too big, like will I experience idle issues even with a good tune?

 

310's will be more than large enough and will give you some room to play with if you wanna crank boost up a little bit down the line. And for the thread-jacker, I had 440's when I was tuned for 150whp, no problems with idle.
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Thats what I figured, but a guy I talked to at the shop where I'm going to get tuned said he's has problems with dsm injectors saying that the idle doesn't come out right and stuff. I figured maybe the cars that he tunes have injectors too big or not in great condition but i dunno.

guess I need my avatar and sig up for more respect :P