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Thread: S13 TP and XDF Modification

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Posts: 1-7 of 7
2012-07-22 21:44:44
#1
S13 TP and XDF Modification
I need the following address info for the s13 rwd 50f00 ecu:

RPM MSB, RPM LSB, TP,

Timing map, RPM Scale (timing), TP Scale (timing),

Fuel map, RPM Scale (fuel), TP Scale (fuel)

I remember them being in Nissan Datascan, but I no longer have that app installed and I would like the info. Thanks in advance

Also,

With the B14 XDF config for the fuelling tables, a formula of (128/X)*14.7 is used to convert the ecu raw values to AFR. What is the associated formula for the b13/s13 OBD1 bins?
Last edited by blo0d on 2012-07-22 at 21-53-45.
2012-07-23 03:40:00
#2
Here you go on the addresses:
http://www.sr20-forum.com/tuning/40511-beginners-guide-chipped-ecu-tuning.html#post547764
2012-07-23 03:48:48
#3
Found this....



Now just wanting an answer regarding the AFR math....

Thanks Vadim
Last edited by blo0d on 2012-07-23 at 03-54-43.
2012-07-23 04:25:08
#4
The two ECU's work differently with AFR tables. B13 uses a relative numbers, that is used part of the calculation. B14's use Target AFR's, as in they heavily rely on the front O2 sensor.

I personally tried messing with the calculations too, but it's not possible to convert B14 target AFR's to B13's relative values.
2012-07-23 04:43:52
#5
it can be done vadim... nistune does it, so there must be some math... dont give up
2012-07-23 06:07:32
#6
Originally Posted by blo0d
it can be done vadim... nistune does it, so there must be some math... dont give up


Not sure why it matters though, K values are completely different between the two too. I just got used to always having a WB in the cars I have a tunable ECU in. Then just build the map from scratch or base it on OEM map.
2012-07-23 11:31:36
#7
Here is a .adr file renamed .txt

as all the hex that is known by who made it. Its the 4 numbers after the H is the hex address.

Hope this helps
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