Possibly taking the ecuflash & evoscan route with questions.

[horizontalkev]

Will be on my 99 GSX with blackbox ecu..
Mods
6 Bolt swap
Walboro 255 rewired
Ebay FMIC
AEM fuel rail
AEM intake
T28 Turbo
NGK plugs
Injector size unknown
MAF-Translator

Questions.
1. Will ecuflash/evoscan work correctly with the 6 bolt swap?
2. Can evoscan/ecuflash correctly log knock?
3. Will me MAF-T be useless when I begin tuning, what happens to it? (Like do I completely remove it, or zero it out or what)
4. And how do I find my Injector size?
5. Now I see people sometimes use an evo ecu with ecuflash/evoscan, is that worth it? What features aren't compatible with 98-99 dsm ECUs that evo ECUs are?

Thanks DSMers

 

[delta448]

Questions.
1. Will ecuflash/evoscan work correctly with the 6 bolt swap?

Yes.

2. Can evoscan/ecuflash correctly log knock?

Yes.

3. Will me MAF-T be useless when I begin tuning, what happens to it? (Like do I completely remove it, or zero it out or what)

The translator box gives the ECU the same info that the stock MAS does. Leave it alone unless you have a more reliable method of measuring airflow, like a stock karmen sensor perhaps, or a MAP sensor for Speed/Density tuning.

4. And how do I find my Injector size?

Google the numbers on the injectors. Then google evom for a baseline global scalar and deadtimes.

5. Now I see people sometimes use an evo ecu with ecuflash/evoscan, is that worth it?

Yes, if you can find one for a reasonable price.

What features aren't compatible with 98-99 dsm ECUs that evo ECUs are?

Lots. Look in the ECUFlash forum on Evolutionm.net

 

[horizontalkev]

Exactly what I needed, thanks Zack..

In regards to question 3, So just leave the maft as is until I upgrade to speed density? Can't I just look on the MAFT for injector size, theres a knob specifically for that right? Or can that be adjusted otherwise for other reasons other than exact injector size?

 

[delta448]

If the MAFT is already compensating for larger injectors, zero it out and code the ROM image for them instead.

The MAFT tunes by altering the airflow measurement the ECU sees, -which as a side effect also alters perceived load inside the ECU and skews the commanded ignition timing advance values-, all in order to trick the ECU into commanding a shorter injector pulse width and keep the bigger injectors from over-fueling. The side effect of lower measured airflow in this case is more allowed actual airflow before the ECU sees the airflow value that triggers fuel cut.

I think you understand why you'd want the ECU to know actual airflow. And with a flashable ECU you can completely remove fuel cut and adjust coded injector flow rate and latency directly anyway.

 

[99OZDSM]

Here's some good links if you haven't already found them. The video links are especially helpful.

Injectors « ceddy.us

Training Videos: How to tune an Evo with EcuFlash - evolutionm.net

http://www.dsmtuners.com/forums/evoscan-ecuflash-tuning/338754-first-flashed-dsm-ecu-98-99-flashing-faq.html

http://www.dsmtuners.com/forums/articles-tuning-ecu/407715-how-get-basic-tune-ecuflash.html

 

[horizontalkev]

If the MAFT is already compensating for larger injectors, zero it out and code the ROM image for them instead.

The MAFT tunes by altering the airflow measurement the ECU sees, -which as a side effect also alters perceived load inside the ECU and skews the commanded ignition timing advance values-, all in order to trick the ECU into commanding a shorter injector pulse width and keep the bigger injectors from over-fueling. The side effect of lower measured airflow in this case is more allowed actual airflow before the ECU sees the airflow value that triggers fuel cut.

I think you understand why you'd want the ECU to know actual airflow. And with a flashable ECU you can completely remove fuel cut and adjust coded injector flow rate and latency directly anyway.

So I may be able to just remove the maft all together or zero everything out?

 

[horizontalkev]

Here's some good links if you haven't already found them. The video links are especially helpful.

Injectors « ceddy.us

Training Videos: How to tune an Evo with EcuFlash - evolutionm.net

http://www.dsmtuners.com/forums/evo...first-flashed-dsm-ecu-98-99-flashing-faq.html

http://www.dsmtuners.com/forums/articles-tuning-ecu/407715-how-get-basic-tune-ecuflash.html

Ah thanks a lot, Ive already began reading through those, I have a lot to learn.

 

[mike96]

So I may be able to just remove the maft all together or zero everything out?

You can remove the MAFT if you want to install a factory MAF back in the car, but if you don't want to spend the money going back to a factory MAF then you can just zero it out and leave it as is until you are ready upgrade to SD.

 

[horizontalkev]

Zero everything out right? What's the process after zeroing out maft in terms of tuning with ecuflash, as jn will the car still run okay enough to allow me to tune it, or will I need to load a premade base tune first before even running the car?

 

[delta448]

Is the MAFT compensating for bigger injectors right now?

If yes, then once you zero the MAFT you'll need to compensate for the injectors with the ECU.

Depending on the size of the injectors, you'll probably have to scale the injectors at least in the ballpark before the car will run well enough to be tunable. If you scale the injectors correctly, you shouldn't have any problems with driving around on the stock tune, even though it is pig rich and leaves a lot on the table.

 

[horizontalkev]

Im sure it is, idk. I still have to determine what size injectors I am running though.. Ordered new o rings and lower injector seals, when I dig in I might aswell replace them for good measure.