Thread: whats wrong with this thing???

okay im getting very unhappy i just got my ecu back from getting a basic tune i hooked it up this morning and it ran like crap i over looked my n60 maf and redid the wirng and didnt help its idling okay but when i give it gas it cuts out and sounds like i have a 2step @ 2500rpm can anyone help????

set up

basic tune
370s
n60 maf
t25 @7psi
walbro 255
300zx tt fuel filter

whats your fuel prerssure set up for 3 bar? 4 bar? also what is your ecu fuel pressure set for

do you have a wideband? if you do, what's the afr?

Try using the stock MAF and burn some chips for the stock maf. My bet it's that it's the MAF

From the FSM:
"MASS AIR FLOW SENSOR MALFUNCTION
If the mass air flow sensor output voltage is above or below the specified value,
the ECM senses a mass air flow sensor malfuntion. In case of a malfuntion, the
throttle position sensor substitutes for the mass air flow sensor. Though mass
air flow sensor is malfunctioning, it is possible to drive the vehicle and start the
engine. But engine speed will not rise more than 2400 rpm in order to inform the
driver of fail-safe system operation while driving."

I'd say you have been informed by your ECU.

Double check the MAF wiring.
From your other post http://www.sr20-forum.com/turbo/30962-maf-not-working.html
^^^the JWT site is correct.
That is the view of the MAF plug, not the harness connector.
It is looking at the MAF plug from the point of view of the harness connector.

Do you have a volt meter?
Double check the pins on the harness connector.
With key on(don't start engine), you should see 12v on one of the pins.
Then make sure that matches up to 'E' on the MAF plug.

*EDIT*
Just checked my J30(same as Z32) MAF on my '94 B13.
MAF pin-----MAF pigtail-------Harness wire
B------------White--------------Orange
C------------Black--------------White
D------------Orange------------Red
E-----Black w/White stripe---Orange w/Blue stripe
A and F are not used.

have a stock 3 bar but tuned for a 4 bar but friend is running his the same and only running very little rich

no wide band

i do have a n60 maf but i think the z32 maf is the same wiring

your MAF is misconnected or damaGed

okay well i had an safc neo in the car befor and sold it to get my ecu tuned well i found the maf sensor wire unplugged from by the ecu from when i took it out lol a friend disconected the coil wire lastnight so when i went to start it it didnt start so i plugged it back in and i think i fludded it smoked VERY bad and spuddered so i pulled the plugs to clear out the chambers and ill try it again in a little bit and hopfully it will work but ill keep you informed thanks for the help everyone

you should def get a adjustable fpr to adjust your fp to 4bars, running too rich can cause itssues like that