Blackzenki's thread and Epstein's tunes and what-not got me interested in other peoples tunes on here.

i dont really care what youre using to tune but more along the lines of what A/F's youre running under what boost and at what timing before top dead center.

altough it wouldnt be bad to read some other people's experience with other tuning tools so feel free to post that stuff up too.

dont forget to mention what motor the tune is on.

thanks, dimitri

 

RS Enthalpy tune, SR20, 550cc Sards, T28, Z32 MAFS

12.0

 

what psi?

 

by no means, use me as a tuning inspiration... i just got my nistune installed, and this will be my first time getting into it... right now, i'm reaching in the dark with it, and doing research...

but when all's said and done, it will be set up for

Z maf, 600cc injecotors, T28, and (according to Ep) 12.0 under load, and 14.7 @ idle

SR20DET

 

Generally, anything over 1/2 a bar should see 12.0 to 11.5 AFR. That's a nice safe zone. At zero psi, your fuel map can be around 13.0-13.5 AFR, with 14.5-15.0 happening under 1/2 bar vacuum. That's fuel, which is easy.

Timing is the secret sauce. Go google MBT, mean best torque.

As far as tools, I use my own design (RS Enthalpy ROM board) hardware with ROM Editor and a custom address file. Kind of cumbersome to tweak the tune, but I've got a good handle on what's going on. A bad dyno session might see 3 rewrites.

I had a CalumSult RT board in my car for a while. It's just a fancy ROM board in a stock ECU that does live updates. This is similar to Blackzenki's Nistune board. Again, I've got a good handle on what's going on, so I just used it for tinkering with new addresses and rarely used / unknown (until now) settings. It was sweet for that. Once I got a setting figured out, it just went onto a standard ROM board.

I also had a Haltech E8 for a while. That was a pretty standard mid-range standalone. The maps are basic, the features are overkill, and the terminology is Industry. You need to know what you're doing, how things work, and how the software/firmware will interpret the setting before you can have a perfect tune. At the end of the day, I swapped to a ROM tune with the same settings, made the same power, but was 1000x more driveable around town.

I've seen many AEMs in use and they're pretty cool. Slick user interface. At the time I was turned off by the CAS reading problem, but they seem to have that handled. AEM2 is in testing right now as well.

I once repaired a Megasquirt2. Holy crap. That was like Fred Flintstone's standalone. Radio Shack nightmare. I design high end electronics in my real job, and have a BSEE. I've seen better implementations in Senior Design Lab... which by definition is full of un-degreed people and only 15 weeks long. Megasquirt3 is actually less powerful than the new Lego Mindstorms.

No opinion on the Autronic SM8 that people have been using. Microtech has a common standalone. Or just plop 'em out and get a Motec, which starts at about $2k for a 4cyl sequential box. The M880 that you see everyone using is over $5k. plus accesories.

 

it was 12.0 at 0.8 bar..it was almost spot on everytime.

 

They also use batch fuel injection last time I checked, which is circa 1980 fuel injection technology

So when is epstein going to make his own standalone ecu?

 

Epstein: I really like what you mentioned earlier tonight about typing in the afr you want and the ecu doing the rest. in my mind, that is what EVERY tuning system should come with standard.

 

Because mass airflow is the best metering system ever invented. That is why all oems use it. Oh wait...

 

r32 gtr ecu, neo afc, 720cc's, twin q45 mafs, twin walbros i run a 10.9 afr at wot 27psi,
now im starting over with a carl h tuned r32 gtr ecu, emanage blue and a an1000 fuel pump, hopefully ill be able to break 30-32 psi on 100 oct on the next day i rent out the local dyno. ill keep everyone updated