Thread: Calum R/T ECU and Nistune software question

I honestly don't mind 16x16. You don't really need THAT much resolution honestly. Just makes it more painful to retune everything.



OBD1 Calum R/T v1 is the daughterboard chip. This chip works in USDM B13, USDM P10, JDM B13, U12, U13, W10 (if obd1), S13.... etc. etc. What I'm asking is for the ECU it self, look up the part number on the ECU. Take a picture of it and post it up.

If you use a U13 bin on a USDM ECU, your car wont run right. BIN file has two parts two it, one is tunable parameters like fuel maps, another is the actual ECU code. If you run the wrong ECU code the ECU wont read the tunable parameters right. Even between USDM ecu's there are slight code differences.

http://www.sr20-forum.com/tuning/45239-nissan-ecu-manufacture-part-nissan-part-number.html

Wow. I did not know this. So I couldn't use anything but a B13 SE-R tune as my base, then modify that accordingly. Good thing lynchfourtwenty posted that DE tune

U13 bin = 1E000

lynchfourtwenty bin = 64Y00

thats exactly why i did that instead of trying with the jdm bin, i've had nothin but bad luck trying to use them bin's so i always start with a good ol usdm bin.

with nistune you can very easily copy/paste the timing map from the bin's tho.

Find out your part number then find the correct bin in the Nistune Rom pack, your buddy should have that pack with nistune itself.

Always use that stock bin as base and build upon it.

except nemu only has 1 option vadim. but ya thats what i usually do w/ nistune

A11-B20 BZ0 = 23710-64Y01 <--- My ECU, according to JWT's website. Looked at the numbers on the ECU then found the P/N on JWT's website. lynchfourtwenty, would you mind copying the timing and fuel maps from the U13 bin to the one you made? Today I had to start the car with the old bin to get it warmed up, then swap to your bin. K value likes to be around 33000 with latency at 1.3 ms. Could have driven it if I didn't have to put a starter on a Armada.

Whats up with it not wanting to start while cold? I don't get it. Once it starts with your bin, I can rev like crazy. Afr stays below 15.

i'll work on that tonight, but what do you mean it doesn't want to start while cold? does it do it with both bin's or just mine? A wild guess would be that your huge injectors arent spraying enough at cold cranking, i can adjust this if thats the case but hows the warm start?

I would agree with you that the massive injectors aren't spraying enough fuel on cold start because I have to change the k value to 65000 to make it do anything. Once started and warmed up, I can turn it down to ~33000 and play with the latency and it will idle fine with afrs ~14:1. Keep in mind I have modified my IACV and removed the AAC, so cold starts will be somewhat of a pain.

Warm start, on the other hand, is great.

Don't want to rush you, but can you give me something else to try out tomo? It's my last day at school this week.

ok i switched it to the u13 timing map and fittled with the cold enrich, it should start easier now but if its still not easy enough let me know an i'll bump it up some more.

as for the kvalue, i realize it seems extremely low, and i gotta agree, nistune tried setting mine pretty low also and it just wouldn't run right and i had to increase it considerably! we're talkin 18,000's to 25,000's so i know what ya mean for sure.

however when you increase the K your load an shit will go up as well, so it'll take some time to further dial that in but for now lets focus on just getting it idling and cruising.

so if you gotta adjust the k thats fine go ahead, find a spot where it idles an cruises as close to 14.7 as ya can and we'll go from there.

i just made a few changes so if you already downloaded it redo it, i altered the fuel map because you are not using a o2 sensor so theres no reason to try to use the o2 flagging numbers, we'll start with 0's an 1's