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after putting on my upgraded ct26, lex, 550s, i had the problem of the car running lean when it hit boost. well i finally got a safc hooked up to it and added fuel throughout the rpms to compensate for the lean problem. now the wide band i got it to richen up at full boost but now its seems to...

mine was just doing that so i put new afm sensor on it and it seems to have fixed the problem on mine. but i also have 550/lexus afm and mine i cant seem to solve the lean problem

thanks for the pointer on that one jet jock i was about to go get into it too. it appears that it only goes up 2 psi or so, so im assuming that there are no restrictions. time to start looking elsewhere

i traced the lines back and there not crushed so i guess my next step is to take them apart and blow or fish something threw there.

well i just checked all my lines no kinks or anything. i know the fuel filters good i just did it 500 miles ago.i may take the lines apart and try blowing through them with air a little later. the fpr guage says ive got 30-32 psi of fuel so i doubt it could be restricted to much if it is.

thanks for your input grim jack i will take a look see at that next chance i get and see what i come up with

well today the afm problem is fixed. thing runs fine check engine light is off. still no solution on the lean problem. i think im going to try to make the screw for the afm, has anybody attempted this themself? or you have somebody do it? if i make a slit in the top of it will i be able to use...

i guess that could be since it doesnt change any. will check that one tomorrow.

right now it developed a new problem, where it has code 31 and 24 and it runs like the afm is unplugged. The lexus afm i have does not have the screw but it appears pretty easy to make it a screw. i tried chasing as many wires as i could find for as long as i could see and came up with...

one more problem i got to add to my list.i tried cleaning my afm with rubbing alcohol now the car wont run almost like the afm is unplugged. so i found a local guy with a 87 turbo supra same as mine and i have his afm electronics and still does the same thing. its got codes 24 and 31 since i...

the vf signal is at 5 which from my understanding is at full rich. what actally is that reading off of? could it be something as simple as a cooling temp sensor thats giving a bad reading so my car is compensating for it? maybe a lazy 02 sensor thats not kicking a code? bad or not fully working...

yes the jtube is removed. next time im home and its nice ill try checking the vf signal.

ya sorry i forgot to mention that i got a walbro in which ive already changed out to one that i know worked in my cousins 240sx. and the aeromotive was from driftmotion i got there kit, it does go up when you unplug vacuum

i have an upgraded ct26, full 3in exhaust, 550cc injectors, lexus afm, aeromotive afpr, aem uego wideband. the wideband at an idle is around 14.8-15.2, no matter what i set the fuel pressure to that does not change. also when wide open under boost the wideband reads 13.3 then goes leaner from...

ya thats what im working on i ordered one a few days ago im just waiting for it to shwo up. whats the fuel pressure supposed to be at with out the vacuum line hooked to it anyway?

ya i know but a buddy had another walbro for me to try and i wanted to put a regulator on anyway so i might as well go head and do it. if i didnt have access to it i would have put more effort into trouble shooting the car has walbro 57 trim ct26 550cc injectors its got a stock regulator...

thanks for the help guys. especially that write up you posted supracentral. i just changed mine out, i dont remember where i bought it but my car was running lean on full boost so i figured to be on the safe side. it didnt fix the lean problem but im more comfortable know there is a real walbro...

is there anyway to tell if the walbro is one of the chinese knock off pumps? i just put a new one in that ran good in another car and took mine out. they had some different numbers on them but they did both say walbro.

thats good to hear man, hopefully everything works out for you there

thanks you answered where im gonna get my intercooler from too. i was checking them out too. just trying to buy stuff in a certain order here, so i forget as little stuff as possible for when i actually start the build.