Need help ka24det build running lean !! S14

[9d6silvia]

I have a s14.5 and its running around 17 on the air fuel gauge and on throttle it goes to about 15-16. The car dies on deceleration so I moved the maf and it helped until 6k revs. But then I noticed the air fuel so I parked it. My fpr is 38psi at idle and I have a complete build list below. Unknown fuel pump. Should I order a walbrow 255 ? And what fuel pressure should it be at? I don't wanna order a enthalpy tune or parts without suggestions or help and I have a new z32 maf on way

Built KA24deT
-Wiseco Forged Pistons
-Eagle Rods
-Refinished stock crank
-Brian Cower 264 cams (shimmed correctly)
-New timing chain and cometic head gasket
-Lightweight crank pulley
-Paint matched valve cover
-Super stiff racing solid motor mounts
-Custom fuel rail
-Aeromotive adjustable fuel pressure regulator
-Delphi 785cc injectors
-BBK Performance air intake
-Turbonetics 6157 ball-bearing turbo
-Top mount t3/t4 manifold
-Authentic Greddy type-s BOV with recirc (sounds amazing)
-Tial 44mm external wastegate with screamer pipe
-Huge aftermarket radiator with dual electric cooling fans (never overheats)
-Huge aftermarket front mount intercooler with 3" piping, no boost leaks
-3" exhaust all the way back (sounds amazing)
-Vibrant hi-flow cat
-Vibrant muffler
-N62 MAF
-Jim wolf technology (JWT) ecu tune (could use a re-tune)
-ECU talk consult cable
-Power steering intact and working, no a/c (deleted)

[KAT-PWR]

You are running too lean. Is that ECU specifically tuned for your set up (injectors/maf/compression ratio)? 43ish psi fuel pressure vacuum line disconnected.
Is your tps set properly.

[9d6silvia]

Originally Posted by KAT-PWR

You are running too lean. Is that ECU specifically tuned for your set up? I want to say that ecu would almost always be tuned for a z32 maf. Stop trying to drive the car with missing pieces.

From what I understand it was tuned for this setup but the tune is semi old
It was a z32 maf in the car but it looked rough so I bought one.

[9d6silvia]

Originally Posted by KAT-PWR

You are running too lean. Is that ECU specifically tuned for your set up (injectors/maf/compression ratio)? 43ish psi fuel pressure vacuum line disconnected.
Is your tps set properly.

I have not worked on this car. I sent it to a shop here to clean all the wiring up.. Which was a mess and my turbo timer was hooked up and boost control was burned in half so I had them fix that. Other then that I haven't adjusted to touched the timing tp iac. The boost is running off the bov now until greddy sends me some wires. I may check part #'s on injectors tomorrow and install the new maf when I get it. BTW love ur s13. And maybe u can link me a tr hread on going blow through if its worth it just to swap?

[cotbu]

That shop is probably going to azs fuck the shit out you, no pun intended! #lubeup

Sent from my SM-N910T3 using Tapatalk

[9d6silvia]

Originally Posted by cotbu

That shop is probably going to azs fuck the shit out you, no pun intended! #lubeup

Sent from my SM-N910T3 using Tapatalk

Lol nah this guy was cool. He built two bad mark 4 supra. The only reason I even went there. I'm just trying to figure this car out. The Turbo will need to be replaced soon. I do know that. This car wasn't built buy me so I bought lube with it #prepared

[9d6silvia]

Update on this thread. I installed a new maf new ECU tuned by Martin got my fuel pressure right my timing, tps, all adjusted right. Runs LEAN at idle but fine in throttle. But still dies on deceleration. With the maf moved 18" away it dies less but still dies sometimes. ?? I'm at a loss. Is my tps or iavc bad? Or my fpr not reading correctly ?

[heychris]

Bov to atmosphere or recirc?

sent from knee deep in snow

[9d6silvia]

Originally Posted by heychris

Bov to atmosphere or recirc?

sent from knee deep in snow

Recirculated. When it's atmo at idle the bov has a lot of suction. I'm thinking iacv may be bad.
Or boost leak. But boost leak would make it rich right ?

[SoundEfx]

It depends on where the boost leak is located.