fuel pressure and NA tunning questions

[mellow65]

so i know this is a combo of both legacy and 2.5rs but there are some damn smart people over here that know their crap so here it is.

Ok here is what i got. I have 99 RS motor in my 90 legacy running the stock ej22 ecu. I have a cone style filter and header with a 2.25 outlet and a 2.5 all the way back. I also just installed a set of 2000 grind delta cams.

First thing I want to do now that everything is back together is check to make sure I'm not running to lean with all the new air coming in and going out. I have a buddy of mine with a wideband that we are going to throw on it here soon but I am looking for some numbers to work with.

Where should I be checking the ratio, ie WOT, idle, cruising at 2500 or what ever? And what kind of fuel ratio should a NA car be running at those points?

So assuming my ratio is a little lean I have plans of bumping up my fuel pressure to bring it up to par. I know the stock 2.5rs FPR runs about 42.5 in what kind of increments should I step up in? ie 1psi, 5psi, 10psi.

thanks for any info.

[Legacy777]

I replied to your thread on the USMB. But I'll chime in here too. I don't see you running lean based on the mods you have done.

If you run lean it's because the cone filter is causing the MAF sensor not to read correctly.

[mellow65]

I replied to your thread on the USMB. But I'll chime in here too. I don't see you running lean based on the mods you have done.

If you run lean it's because the cone filter is causing the MAF sensor not to read correctly.

thanks for both responses, i'm just covering my bases by hitting multiple forums.

thanks again