I have a jdm itr motor w/ a skunk2 valvetrain, skunk2 stage 2 cams and skunk2 cam gears, i'm running a 255lph walbro fuel pump, what should my fuel pressure be set to it's at about 40 at idle, and 45 at blip throttle, any help i would appreciate!!


Modified by 00blkSi at 2:18 AM 4/9/2007

 

mines around 48 at idle....60 WOT

holley 255/aem fpr/i/h/e/hondata/s1s1 cams/s2-6bolt cam gears

get it tuned

 

stock fuel pressure is 45psi without vaccuum i think, with stage 2 cams u need a tune and your tunner should be able to tune it at whatever pressure (that is reasonalbe...40-65psi). my fuel is at 63psi without vaccuum.

 

cool thanks, i'm asking because i had a boosted b16 before and i know we bumped the fuel pressure when we street tuned it, and now that i have the b18c i'm running a basemap for an itr in my p28!!

 

so i tried resetting the ecu after i thought i might have fixed the problem, but the check engine light never went off!!! all the injectors are spraying right, my fuel pressure is at 40 at idle, don't know what it could be!!! help!!

 

what is the problem? if it shitty drivability that because u need to get a tune.

 

what code is it showing?

so its never been tuned?

if not go get it tuned, i really dont understand why people go through all the trouble of building a motor or buying motor swaps and then they run a base map until the motor kills itself or never bother to get it properly tuned so it runs like **** or at half the potential it should be'

get it tuned with proper fuel management, on a dyno, and then if your having trouble come back and post

you cant just throw on bigger cams, valvetrain, fuel pump and then expect it to run smooth on a basemap, stop driving the car and get it tuned

 

it' not the fact that i'm not going to get it tuned i just wanted to fix the cel problem before i took it to the tuner, it's throwing a cel 16- fuel injectors, but i check ed all the injector by pulling them off the manifold w/ the rail, and had my wife try to start the car and all of them are spraying good and in the right order... still don't what it is but this weekend it's definately going to chuck seitsinger to get tuned!!

 

oh yeah i didn't throw that **** on there to try to fix the problem, and i'm not driving the car at all, i'm not a noob at this ****, but i don't know everything either!!!