Thread: n60 maf problems

Yes, you can't mod the 98 lol

aren't the 98 and 99 ecu's different from the 94-97?? Just thinking that maybe this is why the .bin isn't working correctly.

Also we need to find out what the latency is on the 520 sti injectors, or you'll be having the same problem when you put yours in.

95~97 ECU is OBDII.

98~99 ECU is OBDII and not flashable.

The only other difference from 95~97 and 98~99 is that 98 and 99 cars had more emissions crap that the 95~97 ECU doesn't even recognize. I ripped the 98~99 emissions crap out of my car, thus turning it into a 95~97 car.

Latencey, not really sure what that means. I was just assuming it was the same. Does this have something to do with low Independence and high? We need someone who has working sti's in there b14.

Since you can't get ahold of erik and I have the sti chips he sent me. Maybe I'll just send them to you. I don't have a motates to read the bin.

I think i may have figured a few things out. All latency is, is the void blast off time in rom editor. Larger injectors have larger latencies.

ttp min is the pulsewidth minimum
ttp max is the max

boost under the fuel map is the tp fuel
boost under the ig map is tp timing
both of these are just scales that incorporate a few different things such as maf, fuel, timing, basically the load on the motor.

I edited the bin you sent me a little better "from what I'm understanding" I'll try it out as soon as i get off work tom.

the thing with all these bins we are getting is the fact that people are just changing the k value and sending it to you saying "that should work" When in reality it's probably not even close. Granted the k value may be right but you have to change the other parameters along with it. Larger injectors are harder to change in a bin than the maf...that's for sure. Still pretty simple though...I think (I'll find out tom.) Larger injectors have a longer pulswidth than smaller ones. Stay open longer. 740's will have 2x the pulsewidth of 370's...make sense?

ah gotcha. I don't see anything boost or anything on Tuner Pro though...

i was referring to romeditor. It's your tp scales though. fuel and timing scales, and has to deal with pulsewidth.

also, i found some more good information.

http://www.iwsti.com/forums/ecu-tuning-performance-electronics/165128-nissan-guy-needs-some-help.html

Good info. So they are possibly 520cc at 3.25 bar. so at 3 bar they'd be totally different. That could have a factor in some of this also. And your right about the latencey. Defiantly need to figure that out.

ok i've made a lil' progress, the car actually idles with the maf plugged in now. But the maf is very unstable at idle, it's voltage is all over the place 1.3-1.6. At cold start the car was rich, after the car warmed up i tried to take it for a quick spin but all of a sudden it was running lean. I have no codes being thrown so far, but the car is breaking up really badly still. I'm guessing i moved the latency or the ttp values too drastically and went from waaay to rich to too lean. so back to the drawing board.

with a walbro 255 you'll have around 44 psi anyways, even on stock injectors. But yes the k values and pulsewidth corrections need to be correct.