KA24DET Problem Help!!!!!!!

[Kaizen.]

Alright heres the problem.
- Runs like shit
- Bogs at full throttle
- Won't pass 3500 rpm in gear 2-3-4-5
- Won't read boost, when boost kicks in, motor just won't take it and bogs out like crazy



When I disconnected the charge pipe it ran fine, nice n smooth.



Things changed since the setup. (trying to make it run)
- Spark plugs (3times) NGK Iridium step7 gapped .28 + wires changed

- Changed TPS
- Checked MAF x30 + cleaned
- Checked for burn marks in ECU


Mod List:

Motor:
-T-25 turbo
-Turbo manifold
-Downpipe
-Straight pipe
-Dart Izumi
-jgs oil line kit + oil pan with bung
-z32 maf/with pigtail
-370cc injectors
-Walbro fuel pump
-Emance tuned ecu
-Greddy bov
-Intercooler
-Buddy club battery
-z32 fuel filter
-Nismo motor + tranny mount
Drivetrain:
-ACT clutch
-XTD 11lb. flywheel
-Amsoil fluids


HELP!


thanks.


-BMOK

[sunnys14]

What are your AFR's?

Did you test for boost leaks?

[koukikrisp]

i have an sr20 running stock and mine does the same exact thing. under wot its sounds like a misfire, bog, etc. light throttle/idle it does ok. it isnt a boost leak b/c all my couplers are tight and there's no black smoke/spark plugs(i had a boost leak before). checking my plugs it looked like they were burnt (aka:lean). i checked my fuel pressure w/ a gauge, 35 [email protected] (supposed to be around 40), under load the pressure dropped(not good). i turn the car off the needle is down to 0 before i walk around to the engine=fuel pump. i noticed in ur mod list u dont have an upgrade yet. im currently having a walbro shipped now. i'll post up the results when i get back in a week.

[Addicted2Kouki]

maf wired up wrong.

[let5l1de]

check maf wiring again... proper voltage and continuity (signal wire must be shielded)
change maf with a known good one
be sure your ecu tune was properly done or replace with stock ecu for testing purposes
check fuel pressure & reg
make sure injectors are all operating
check the coil (internal s14 external s13) and replace with a know good one.

[voodoo_child]

i dont see an upgrade on you fuel pump buddy? i have the same problem on my SR2ODET. i just replaced my fuel pump to WALBRO and it ran smooth.

[Kaizen.]

Thanks for the info guys.

Warlbro is installed, just forgot to lsit

[Kaizen.]

Maf is installed right. I think it just went to shit, since I still didnt make a catch can for the hose on the valve cover and its shooting stuff all over the place. The maf is probably trenched in oil. Im going to try and swap for a another one and see how that goes.

[importdude]

if the valvecover hose is spitting oil out
u have a problem with blow by buddy

[nosajton]

KA24DEvelopment.com :: ECU Diagnostics (http://www.ka24development.com/ecu_codes.html)

what codes is your ecu throwing? if its storing a cam sensor/maf code it will run like shit until it's cleared