B20luda

i have a small problem with my car..the engine leans way out up top in boost like 14.5-17.1 at around 10psi im using Hondata S200B DSM 450cc injectors stock pressure regulator and a Walbro 255LPH fuel pump it doesnt start leaning out until around 5k RPM..the car is a 90 prelude with a built B20a sleeved 83.5mm bore has a ported head with larger stainless valves stock cams stock intake manifold...dynoed before all these mods at 240whp on 11psi im runnin 10 now..how could i be maxxing these injectors out..any ideas why it leans out? i dont think im making enough HP to max out the injectors and BTW i dont drive it lean in boost..

OMG B16

How was the car tuned? Dyno? Stret?

m R g S r

whats the fuel pressure? maybe it's low

and dsm's are good to about 300whp...ive seen em pushed to about 330whp.....

adseguy

this happened to me too. It just so happened that my wideband sensor died on me. I knew it wasn't LEAN because otherwise I would have blown up and i pulled the plugs they are normal....check out the sensor, it could be the problem if you haven't changed anything

deftones0817

maybe the main relay is ******* up? I had my car go lean in boost when the main relay started to die in the heat and **** and it being old