Has anyone swapped a H22 into their Si and then either turbo'd it or slapped a shot of nitrous on it?

If so, list if you had an aftermarket fuel pump, what shot and/or how many pounds you're runnin.

 

I'm running a 65 shot on my H22a1 in my SI VTEC.

 

Do you have an aftermarket fuel pump?

If you don't know what I'm gettin at, I'm tryin to see H23's fuel pump can handle, since noone really knows what it's capable of.

 

Oh I see. I put in a Walboro 255 lph pump because I was going to up it to a 100 shot, but I changed my mind for the time being. I have a friend who ran an 85 shot in her Si(with an H23) on the stock fuel pump. Now she is running a 125 shot with a walboro 255.
I did run a 75 shot on the stock pump, which netted me 217 whp and I was running a rich *** 10.5 AF. My stock 93 Si VTEC fuel pump could easily handle 230 whp judging from my experience with it.

 

yea, but the Si's fuel pump is a different part # than the VTEC one, and I know Honda wouldn't put a bigger pump in for a smaller motor, so it must not flow as much. I just gotta figure out how much it will run *safely*. I'm gonna be runnin a H23 VTEC w/ *hopefully* around an 80 shot....which should put me around 300hp, which is what the stock H22 fuel pump is supposed to be good up to.

 

I couldn't tell you the max hp that the VTEC pump can sustain, but walboro pumps are only $90 shipped so there isn't really any reason to push it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by laughinxxx &raquo;</TD></TR><TR><TD CLASS="quote">Oh I see. I put in a Walboro 255 lph pump because I was going to up it to a 100 shot, but I changed my mind for the time being. I have a friend who ran an 85 shot in her Si(with an H23) on the stock fuel pump. Now she is running a 125 shot with a walboro 255.
I did run a 75 shot on the stock pump, which netted me 217 whp and I was running a rich *** 10.5 AF. My stock 93 Si VTEC fuel pump could easily handle 230 whp judging from my experience with it. </TD></TR></TABLE>

hey im curious ur friend that is running 125 shot of nos on her Si, wat internal did she perform on her lude. see im curious because i want to upgrade from a 60 shot to a 100 shot of nos. i have a 92 h23 and im running a holley dry system. thanx.

 

laughin, did you have problems w/ fuel pressure, or did you get a fpr?

 

I have a JDM h22a in my 92 lude SI and was using a 50 shot. Didn't seem to run too lean. Never really had a problem till I left out a jet.

 

Lef, she's running stock internals.
Ludey, My fuel pressure jumped 3 psi with the addition of the walboro 255. I lowered it with an AEM fpr.

 

was the 3 psi really noticeable? could you run it that high and not be too bad off?