Been reading about these dynoflashes and the results seem pretty impressive. I am curious though, I have an Apex'i S-AFC II tuned by buschur. Is getting your dynoflash technically cancel out the use of the afc? Cause it changes air/fuel and ignition. I know it would be better since the AFC doesn't do ignition. Just owuld kind of suck blowing the 300 I did on the AFC and then if I got the Dynoflash for 500+ or whatever it was. Just kind of curious. I know that if it cancels it out, then I may scratch that idea, but could I just use AFC and get your REV deal for the boost taper, rev limit, speed limit, high boost cut?

Tim

 

Anyone? 44 views and no one can answer that, yet so many have it? :-P

 

The mail flash/custom tune flash technically could take the place of your AFC/Bushur settings since I doubt Al would reccomend runnning Bushur's fuel trims in conjunction with his tuning which errs to the richer side due to increased timing advance. However, you could use your AFC in conjunction with the flash to make minor adjustments but on that I would consult Al directly. Hope my post was a little helpful, also im sure theres a market for your AFC if you decide to resell it. Good luck.

 

I am also waiting for the same response I asked AL a while back. AL...any answers on this? I plan on getting at LEAST the mail in style flash when you come to AMS soon...but I already have the S-AFC II...should I pull it before I come in?

 

IF you add a Dyno Flash to a safc car you set the SAFC settings to all zeros

Then at a later date if you want to run race gas you can use the safc to lean out the car like 5% on top to get extra power at the track

Also if you ever add more mods you can use the safc to fine tune to adjust with a dyno or wideband

The reflash will yield more low end spool up and trq - and no fuel cut and a smoother powr band - but no more top end power than a safc which has been tuned - the area on the left of the curve is greater but the peak is about the same

Also no fuel cut and higher rev limit

 

So it is kinda the same deal? I should just go with that REV flash rather than the other part since having the AFC?

 

No its NOT the same as a SAFC

The SAFC makes power by reducing the MAF signal by a set percentage - this makes the car inject less fuel as the car thinks there is less load (less load = less air flow)

The problem is at the same time this has bad effects on ignition timing as the lower load cells on the ignition timing maps have much more advanced timing

The decresed fuel and increased ign timing make a tremendous amount of power - however - as you have no independant control of the ign timing and fuel the uniteneded consequence very often is some spots of detonation as the car trys to run too much timing

This results in the ecu pulling some timing in areas of detonation and leaving the timing alone in other areas - this makes for the clasical SAFC dyno sheet with lots of lumpy areas and bumpiness

Also since the car runs fairly lean across the lower end of the power band there is not much you can do down there and as a consiquence the timing is much weaker and the spool up suffers

The SFAC is a quick and easy, simple tuning tool which can make decent gains in proper hands - however you still need to get it tuned AND it will never work as well as a reflash

 

Here is a typical SFAC tuned dyno sheet - notice the rough power band and areas of jumps and bumps? Thats the areas of ecu timing pulling - it only gets worse after you operate it for a few hours. We actually see negative timing on these cars when we test them with a data logger after they have been on the road for a while.


Now check out what happens - same car - same mods - same fuel - just add some ign timing control - in this case the emanage and wacth of the peak power stays the same - but look at the trq gains and the smootness under the curve (BTW - check the dates on these dyno sheets - I have been at this evo tuning stuff for a solid year now - i already have been long way down the safc and enamage roads - thats why i know exactly what they can and cant do)

 

Now you want to check out the best way to tune an evo - the way that gets you the best runing and smoothest power band and the most possible power in a very safe manner - check out the Dyno Flash - - Here is a representative dyno flash car, needs less mods and has a richer a/f ratio but makes much more low end power and stays almost flat in the power band

Not as much power in the peak - but much more low end power - a smoother power band and a real smooth and refined driving feel - far better driving than even a stock car

 

Or do as I did Get the race gas Buschur Flash and then use the SAFC to detune the car for your street fuel.. (I add about 12-15 points and it provides mor safety...

 

i did a battery swap on my evo do i have to worry about the flash gong back to stock?

 

Here is the kind of numbers you start to see on my reflashes with a few more mods such as cams

Notice - my trq number is always higher than the whp - that makes for speedy spool up and loads of low and left of the peak power curve action

A most pleasant car to drive

 

as you start seeing some of the stories about our compeditors and how long they take to reflash the REvo's please listen with open ears. We take between 2 - 4 hours on each car we dyno tune

You pay a flat rate fee of $500.00 which includes ALL that time on the dyno and your custom reflash

We don;t stop the job until your dyno sheet is as flast and smooth as the ones I just posted - and it has to be repeatable over numerous abusive repeated dyno pulls to pass my final approval

Tak a good look at the curves and smoothness of the other dyno sheets being passed about - ASK where the a/f tager is set to - and don't be sold the hype on a raw peak number

If you have any questions - feel free to ask us

 

No you dont only a reflash can take it out

 

I think this is so true. Everyone wants to focus on max hp, but that doesn't necessarily equal good drivablity. What good is mega hp if you only get it above 5500 rpm. Also, what good is mega hp if you're going to blow your motor before 50 k miles.