Thread: SR 20ve leans out in high rpm

try adjusting the TP MAX upward, you maybe maxing it out an its not allowing any more fuel.

is the leaning out during open loop or closed loop? (your narrow band o2 isn't used during open loop (wot). your engine is running off the fuel maps instead)

cool idea... ill do it man, thanks

Are you doing any kind of data log were you can see the TP value that you are reaching at high rpm also maybe you have too high TP values on you fuel map and you are trying to tune areas on your map that are no being reached!!

is this issue still not resolved?

This problem is now resolved....we found a small break on the fuel pump plug on (top of tank) so we changed it,,did a road test car felt a bit better but was still going high 14s AFR so we decided to connect straight to the battery (trunk) and just like that! one thing we noticed few weeks ago my fuel pressure was 45ish when the walbro was installed it was 60ish with the direct 12v its now 80psi..seems the ignition system/relay are restrictive ...gonna post vidz shortly
after the issue was solved i took the car to the track.....

Special Thanks to my team wolVEpack (blo0d,niZmo and anju) especially niZmo Thor Large up uself boss !!!!and to all who made an input in this thread

So you rewired the fuel pump with a external relay so it gets 12v constant and used the oem fuel pump wire to trigger the relay you setup?

the rewiring is not done yet...just hooked up the pump directly to the battery

videos
directly to an ignition wire : ignition 12v video by sharktem | Photobucket

directly to battery 1 : direct12vtopump1.mp4 video by sharktem | Photobucket

directly to battery 2: direct12vtopump2.mp4 video by sharktem | Photobucket

at the track they didnt fire up the printer and the right side mph sensor was nor working ...


other times were 14.1 @ 101 and 14.2 @ 102

finally! we can tune this car... glad its sorted man, im glad you didnt give up!