Help me diagnose

[cozmosland]

nope, not sure about the pump, is there an easy way to check its voltage. iv been wanting to upgrade regardless.

[h4X6]

Well if you rule out filter. Be know Ll your injectors are firing then last thing would be pump. Which is what I am leaning towards now. I think your pump is done.

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[cozmosland]

yea it could very well be.

im sure my injectors are firing. though maybe not enough. its like it hits a brick wall with too much throttle. its not like theres any load on the motor when its just sitting there. im going to swap the filter next as i just picked one up.
im also going to run my ecu without the emanage and see if thats any different. though, i doubt it will be since i havent changed a thing since i last drove the car 10 months ago and it was perfect back then besides not passing aircare

[cozmosland]

alright so development.

change the fuel filter.. and no change...

then, disconnected my emanage and plugged the ecu in stock and it works. can rev with my foot all the way down.

so im not sure what has happened since the other day.

there is a problem now though.. i now run lean at idle. sits around 18 afr. if i hold a light rev it sits at 14. but then back to between 17-19 at idle. iv never ever had that before.

edit!! so after it warmed up it sat at 14. went for a little drive and all seemed normal.

it just now has a very lean startup which is new.
Iv read that it could either be a vacuum leak or a bad water temp sensor which may explain why the emanage was freaking out.

does this make sense to anyone?

[h4X6]

very well could be... was it throwing any codes at all?

[cozmosland]

nope not one. i could go into consult and see if anything is stored there but nothing ever flashed up on the dash.

its just odd, if lets say it is a water temp sensor... the read out on my datalog wa always working and normal and it makes no sense as to why it just suddenly freaked the **** out.

im happy its back to normal though,,, more or less

[Skym]

It could be coolant temp sensor. If have Nistune tuning software, it shows what part ECU is looking at on warmup tables in realtime, so should be obvious. Or check voltage at sensor.

But with datalog part, airflow input, output voltage was showing around 2-3V, then problem happens and that would mean it's selecting lean part of fuel map on ECU, which is what you said wideband confirms. Under full throttle (under load) it should go to 5V which is selecting the richest part of fuel map.

[cozmosland]

yea your right. well driving around now everything was behaving and not giving and problem at wot. i just now need to figure out why the emanage went off and start over...., once i pass aircare tomorrow.
i really wish i had nistune. its just to complicated to do for a series 1 r33.

[h4X6]

yea your right. well driving around now everything was behaving and not giving and problem at wot. i just now need to figure out why the emanage went off and start over...., once i pass aircare tomorrow.
i really wish i had nistune. its just to complicated to do for a series 1 r33.

Are you sure about that. In thought the series 2 was harder then anything

Series one should be easy like the rb20.

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[Skym]

Internally modified 300ZX ECU (so it plugs into stock RB25DET ECU loom) + Nistune, Z32 MAF, Z32 MAF plug, bit of wire (known as a pigtail, which can buy from Tomei, etc), Consult Cable, Nistune tuning software + ECU tune to suit.

[cozmosland]

i think in the end which how much it all costs its better just going to powerfc then isnt it.

does anyone out here in bc tune nistune?
i know that there is a venom motorsports but there is zero info about it online and the address put it in a residential area :s

[h4X6]

i think in the end which how much it all costs its better just going to powerfc then isnt it.

does anyone out here in bc tune nistune?
i know that there is a venom motorsports but there is zero info about it online and the address put it in a residential area :s

Rg racing. Monkey nuts. Myself.


I personally tuned my own car. Runs mint. Have some more tuning to do but it's been great.

And really the costs of doing all that is about 600-800 all said and done. Power FC is what 1000+?

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