Last_Mohican

I am prolly going to run 7psi prolly on a t3/t4 no i think. I have a 2.3I accord. What ratio FMU should i run 12:1 8:1?

HMT-Admin

8 or 10:1 some people dont like the 12:1's since they can blow the ---- out of your injectors.. but they are more fuel.

Last_Mohican

I think the formula goes FMU*boost=max fule pressure(correct me if i am wrong)
S0 my question is
This enough? 8(8:1)*8(psi) = 64max
or 10:1 giving me 80 max.

HMT-Admin

60 or 80+ your static fuel pressure (hondas) 37psi

so like almost 100psi at the rail.

Last_Mohican

so 8:1 should be plenty.

fongaroos

really? 8:1 is plenty? how come everyone suggest 12:1 then? 8 compared to 12 is a big jump isnt it? i think the main concern is detonation right?

correct me if im wrong...
too little fuel equals running lean equals higher chance of detonation...

if you run to little fuel then you run the risk of detonation... since 8:1 might seem too lean for some and 12 may seem too rich for others...wouldnt 10:1 be a good middle ground?

i just bought a vortech 12:1 and you guys are making me think i made a wrong decision...

please help

Last_Mohican

i would not say you made a wrong decision as it appears 12:1 has worked for many ppl but i was jsut pointing out that almost everyone that runs a 12:1 runs too rich. Ya i know too rich is much better than too lean but any more pressure in fuel than needed seems like it is more likely to put more wear on the fuel system.As someone said earlier 12:1 can put lots of pressure on your injectors. There are solutions to this that i am aware of now. Most ppl go 12:1 cause it is easy to get a 12:1 FMU. I thikn 12:1's were originally designed for bigger engines. I will prolly go 10:1 myself if i can find one is not i am going 12:1 and try to lean it out some cause if i messup my injectors i am screwed royally.

Last_Mohican

Use your 12:1 you will be fine and if you want to lean out follow Ghettoturbo's advice as i probably will:
"just add a bleeder vlave with a check valve on the vacuum line going in so the fmu sees less boost and leans out a little" THis is if you later decide to get a little leaner.