At what PSI do you reccomend changing to 550 injectors and a walbro pump? I just don't want to run rich, although it is head and tails above running lean!
When to go 550
- Thread starter suprahabsfan
- Start date
Stock turbo, MBC, 11-12lbs boost, 3" downpipe and elbow, full 3" exhaust, no cat, intake..... Can you use 550 injectors and walbro with no lexus afm? will it run rich
need lex afm. will run very rich... prolly not at all. without the lex afm you will increase fuel by ~25% and will run very rich without the additional airflow provided by the lex.
at what point in all of this do you need to get a wideband? I thought as soon as you go 550's you need wideband and afpr.
1992supraman;998159 said:
Technically you dont need eathier! The point of a wide band, 1: is tuning, 2: to monitor you A/F reading... So you dont blow your car up. As far as the AFPR thats to adjust your fuel pressure. Once again tuning. With the bigger injectors its a good idea to do get both wideband and afpr.
But see sense your tricking your ecu and both mods allows 25% more air and fuel therefore its allready tuned to the correct amount of air/fuel. Your stock FPR shouldnt have any problems.
~Cory
