can someone give me a quick run down of the pros and cons of each of these tuning options? Please keep the flames down and post only revelant information

 

Dyno flash can adjust timing, AFC cannot, AFC can be tuned on the FLY.

 

The best option is both.. major tune with dynoflash, fine tune for changes with the AFC its the best option for someone who wants a good quality tune, but needs room for adjustment.. But the previous post is correct, the AFC cannot control timing (though the way it effects the MAF signal indirectly could change the timing its certainly not a "Feature")

 

thanks for the input. Guess i'll just do both then.

 

Does the rev limiter ($80) flash adjust timing? or do you have to go with the $200+ flash to get the timing changed?

 

Ruthless, Check out Mach V's new tuning tool. It looks pretty cool because it functions like SAFC with timing control and a GTech plus data logging capabilities. All for a little more than the SAFC (about $430 I think). You do this with the DynoFlash and you should be able to do anything you want.

 

yeah, good point, it seems to have a secondary O2 simulator too.. Doesn't look any more complex than the S-AFC to install..

And yes, you need the more expensive flash to get the timing adjustments..

FYI, with the cost of that new device PLUS the cost of a flash, its approaching the cost of the UTEC, so weigh your options.

 

EvolvedfromaWRX just got his UTEC tuned by Turbotrix making 318 whp on 93 pump gas, UTEC w/ map selector, AEM intake, Turbo XS Cat-Back, Turbo XS DP, Turbo XS cat-delete pipe and Forge BOV

 

Some people like to keep the afc for race gas settings and leave the flash for pump gas. Just an option. What we noticed yesterday with the utec cars is the ignition maps were switching in the ecu. With the evo it comes with two ignition maps and two fuel maps. Japan have 3 ignition and 3 fuels. Now the utec makes correction to whatever map the car is reading. Now if the car knocks or is cold or hot , the car will switch to the much more conservative map. Same hold true with the flash. But we are getting around that by not only altering the primary ignition map but also altering the secondary, so the transition is not so drastic. It is possible from pull to pull if the map switches to lose as much as 25whp with leaving the secondary igition map with factory settings. If the map switches to a secondary timing map it also switches to a secondary fuel map. Which is also very rich and conservative. Very frustrating for the tuner.. Hope this all makes sense ..


Mark
Turbotrix

 

Mark,

So you are saying that when tuning a absalute value IE timing with Utec the stock ECU switchs to a lower timing map for safty but because the utec is still controling timing in absalute values it very tough to tune?

Thanks sorry for the ? if it's stupid.

ERic

 

eric ..

yah i know what you saying. We're talking with turboxs now..see what they say. The value you enter as a timing value should be that timing value. The second car we did, We made his secondary timing map the same, and it was alot easier for junior to tune ... We'll see


mark
turbotrix

 

Cool, Thanks for sharing!!!

 

turboxs has a newer version coming out next month to correct the timing issue. After that update im sure it will alot easier to tune ..

mark
turbotrix

 

Thanks for all the good input guys. I know very little about ECU programming and the more I hear the more I will begin to understand.

Considering that I am a noob when it comes to engine management would installing UTEC be overkill? or taken to the proper tuner could be very useful and get some understanding out of it.

Also does anyone know if a UTEC or ECU+ unit can be run off a DVD screen instead of a palm or pc? I happen to have such a unit that is touch screen and would be a interesting set up.

 

bump