Nistune Forums

100% yes, that tune will not be making anywhere near the power the car should deliver.

How old are the injectors? Might be worth getting them cleaned and flow checked to make sure cylinder 2's one is working correctly. Your timing map doesn't look aggressive, if anything it's pretty tame for a t28 at 13psi.

There is a speed limiter, yours is set at 125mph if I remember correctly, if the ecu sees that speed it will cut fuel

Timing makes a bit more sense if your running e85. Scalers is just the load scale. It's a calculated number based on air flow. You will need to adjust your tune, because of the size of increase to your scalers you will have to double check the tune is still ok. Tp cut is a load cut, when the ecu see...

also speed cut is set at 125mph, would be worth while raising this as well to eliminate issues in the future

and your TP Cut is set too low, you have it 141 on your bin but your logs show you exceed this so you'll need to update you TP cut tables and burn it to ecu for it to give you a new limit.

But note, your scalers in your fuel and ignition tables only go to 112. You need to fix this and tune it first

what fuel you using? 22deg on primary timing map throughout peak tourque and gt2871 is far too much for 98-95oct. you'll be det'in

what ecu are you using? im reading the bin using the AA5xx ecu tables. Using that then it looks like the use of nistune hasn't been understood. The primary fuel map is ~14.7AFR throughout. Also it doesn't appear Kconstant value is in the right place for your mods. I personally wouldn't drive it till...

The stock dump valve also installed that way you sure??? inlet to dump valve tends to act on piston face to open them, not against the back http://kuddy.net/200sx/removing_dump_valve.html the way your lined up is high pressure acting on the back of the piston. so vacuum is fighting this pressure an...

louiswun does your dump valve work correctly when its installed that way round?

To add a bit more detail to the above, on the load scales you really don’t want to scrimp effort here. On your maps im guessing you have scaled up the last ~4 columns to match what your seeing as max load. You really shouldn’t do this as it decreases the resolution of the map. What are you more conc...

What fuel are you running at 1.7 bar ?

shell UK V-Power (99 RON). I run approx 4-6deg @ peak torque without knock.
keep in mind i run a sr20 with the squish area removed so its low compression. I dont have my calcs to hand but its less than 8.5:1 when i built it.

is possible to know how much we have now? it would be a bit of a pointless number. hardware capable of 100,000 writes. say you flash the tune 5 times every day you drove the car. that would give you 54 years of daily tuning..... so i think its safe to say dont worry about approaching your write lim...

running approx 480hp (at fly) @ 1.7bar

black top sr20det
HKS lined block w/ 90mm HKS piston / eagle rods
stage 2 BC cams
squish removed head
850cc Sards
mazworxs top mount with gt3076
z32 AFM

think there's more to come but just need more time to play with the tune...

you'll need to load a bin file from somewhere to get something to tune from. so to start you load the correct address file (which tells nistune where to look and limits for parameters) and then you will need to load the actual ecu data (the bin file) from somewhere. You would normally do this direct...