Help With Ecu Tuning

[AmiD_54rus]

Hi guys, sorry for the English writing through a translator, I'm from Russia Novosibirsk Siberia!

I ask your help in setting up rb20det

specs:

stock pistons

drain rods

injector 444

Maf Z32

turbo T3T04E

76mm exhaust (no catalyst)

intercooler 700h300h76

1 bar boost - 15psi

I can not attach files do not have permission

[GTSBoy]

OK. So what is your actual question? Do you want to know which ECU to use? How to tune an ECU that you have?

[AmiD_54rus]

I use the stock ECU, and romeditor you could help me to set up, fuel map, ignition map???

[AmiD_54rus]

ECU and the log file nistun

http://rapidshare.com/files/3243083049/new_444cc_afr32_1.7.bin

http://rapidshare.com/files/1429719980/2010-01-10_1911_48.csv

[AmiD_54rus]

The car is going very badly, the best time for 402 meters - 14.6 to 1 bar ...

I can not adjust AFR and ignition.... (

[GTSBoy]

Are you using Nistune modified ECU, or burning ROM files that you edit with ROM Editor? Reason I ask is that it is very hard to get good results using ROM editor. You have to make some changes, burn a chip then try it out. Takes forever.

Nistune be tuned in real time on the dyno.

Also, with ROM Editor, it is harder to get the k factor and injector latency tuned correctly. In this modern age, I would abandon all attempts to tune with ROM editor and move to a Nistune.

[AmiD_54rus]

I understand that nistun easier to set up, but for now I'm using the ROM editor ...

[GTSBoy]

Well, then to answer your question, not we cannot help you to set up the fuel and ignition maps. You need to work out the correct k value to suit your changed AFM and injectors (look at Nistune Tuning guide for instructions on how to do the calculations). Even then, the k value you calculate may not be quite correct. Fine adjustments to k and latency may be required to get it idling properly.

Then you need to set the mixtures in the fuel table. This is most easily done on the dyno in real time. With ROM editor this is not at all easy. Very difficult and painful.

Then you need to adjust the timing so it has as much advance in it as it will take without detonation. Then dial that timing back a couple of degrees everywhere - more on load. This is also very difficult if you have to burn then test then correct then burn then test then correct etc.

[AmiD_54rus]

I picked up the value of K, and the delay, but I can not beat the detonation, so I ask your help, which use a mixture and ignition

[GTSBoy]

Mixtures need to be 14.7 at light load, transitioning down through 13:1 as it comes to boost then down to about 12:1 or a bit less when on boost.

Timing needs to be high at light load (like 40 degrees or perhaps a bit more) transitioning down towards very little (like 5) under load.

If it is pinging, add fuel and/or reduce timing at that point.

It's that simple. But it's not simple.

[AmiD_54rus]

Could you show the fuel and ignition maps?? [email protected]

[GTSBoy]

I tuned my Nistune RB20 on the dyno. My maps won't help you. Different injectors. Different AFM. Different TP scales. I can't attach any files either anyway.

Edited June 3, 2013 by GTSBoy

[AmiD_54rus]

it would be better and more fuel before ignition or less fuel and ignition later??

[GTSBoy]

You need to tune the mixtures first. But you must make sure the timing is not too advanced before you start. You don't want it to ping itself to death on the first runs.

Then you need to go through and make sure the timing is right. Advance until you hear pinging (if you have decent equipment to hear it), then back off.

Then you should go back over the mixtures.

But really, this is a long enough process to get right one a dyno. It is terrible to do with burnt ROMs and road tuning.

[AmiD_54rus]

what better to make a mix? 12, 11, 10.5?? at full load? Now a mixture of 10.5 to 1 bar boost

[GTSBoy]

I already told you that. Post #10.

[Dose Pipe Sutututu]

what better to make a mix? 12, 11, 10.5?? at full load? Now a mixture of 10.5 to 1 bar boost

11.5 to 12:1 is fine as it's only 1 bar boost, running too rich you'll constantly be changing spark plugs.