SnShne1jz

so i am trying to run 680cc injectors and a safc, it should work fine since 680 are less than 50% of 370s. I can not get the car to run right at all though. its rich as hell everywhere. wideband is reading 10.0 no matter what i do with safc. I tried all the way at -50% through +50%. It should be all wired up correctly, it is reading everything, rpm, pressure, tps ect... I can't figure out what to do. I hate the safc. It is set up with pressure sensor and 1 in 1 out and the throttle arrow up and to the right. If there is anything i am doing wrong or any tips to make my car run i would really appreciate it.

I just put a new set up in, i am runnign small core 272s, top feed fuel rail, 680cc inj, aermotive fpr, t67, drewgo mani ect.

It is also hardly pulling any vacuum and it won't idle at the moment. i have to hold the gas to keep it running.

Supra Dr

iTrader: (14)

Whats your static fuel pressure set to?

SnShne1jz

it is set to around 40-42psi

got_trd

I think your fuel pressure might be too high... Even though the injectors are less than 50% of the original ones, I would be looking into something else to tune besides the afc man. Thats mostly for BPU people. Look into the E-manage or power fc if you can find one.

Supra Dr

iTrader: (14)

Might a bit high. Plug the vacuum line w/ engine idling & set
to 34PSI as a base line. Reconnect the vacuum line & see how
it is.

Edit: See if if leans out @ 34 psi, if so then gradually increase
pressure. SAFC has a bad rap, worked well for me. Haven't
touched it in years. E-manage is better, but also more complex.
Depends what your needs are & what your plans are down the road.

SnShne1jz

i turned fuel pressure down, it didn't help much. Is there anyway to test an afc to see if it is working?

Also what would cause the car to hardly pull any vacuum, when i start it up i have to hold the gas down and it sit around 0-5" of vacuum. When i forced the map sensor to read 15" vacuum the car ran much smoother and actually idled. Any help?

tavarish

iTrader: (2)

have you tested for vacuum leaks, or boost leaks?

SnShne1jz

it won't even boost right now

And i can't find any vacuum leaks. It runs better when i force a vacuum leak(idles higher)

Supra Dr

iTrader: (14)

Cam timing?? That would fit your description. Rich, won't idle & low vacuum.
Possibly valve adjustment, too tight? Same senario.

Rexn30

Ya seems like your are out of time pretty bad. Check your timing for sure, you might of skipped just a tooth.

tavarish

iTrader: (2)

the problem with changing so much at once is when something goes wrong, it could be anything. Go back to the installation, and make sure your cams have the correct timing, make sure your injectors are all pulsing properly, and make sure the vacuum setup has no gaping holes.

SnShne1jz

The timing is dead on right now. Although i am running stock cam gears. Should i need aadjustable cam gears to run with these cams to get it to run right? or should it work fine on stock gears if the timing is correct.

Supra Dr

iTrader: (14)

Stock gears are fine.

List everything that was replaced when things went wrong.
Give a existing mods list & everything that was changed
on the last round when it whet bad.

whiteSc3

iTrader: (1)

I don't understand how 680's are less than 50% of 370's? If you are not making vacuum the problem is not the safc.. How does the motor sound? When you changed the cams did you replace the springs/retainers? Keep checking all your lines. Are you still running a MAF?

SnShne1jz

FMIC w/ 2.5" piping, HKS carbon ti catback, walbro, hks ssqv, greddy boost gauge, greddy BCC/SCC, MBC, stock twins 15psi

Thats what i had before i did the single turbo swap

I added this stuff
ITS t67 .68a/r, drewgo manifold/downpipe, hks 40mm wastegate, 4" intake, TTC MVP top feed fuel rail, low imp rx7 680cc injetors(brand new), 7m resistor pack, Aeromotive FPR, SAFC2, crower small core 272 cams

after i got it all together it started running like crap.

I tried changing the timing by moving the cam gears around. It didn't help at all, it would even start that way. The timing is right. all the valve clearance was in spec when cams were put in. I double checked the wiring on the safc and it is right.

Could i have my FPR hooked up incorrectly?

I am really stumped, thank you supradr for helping.