BEGI ECU Reflash - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Bellengineering - Miata Accessories Ordering and General Information Stephanie Turner 830-438-2890 ext. 103 [email protected]

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Old 11-18-2010, 02:16 AM   #21
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Originally Posted by ShaZam508 View Post
If we were to buy one of your complete turbo kits, would this re-flash make having a piggyback obsolete? Or would you still need to have the XEDE? I plan on making about 240whp and staying there so if i could retain the stock ECU and not have any piggy backs fight it and pass emissions that would be great!
Yes and no. For a lower boost system, the Xede would be obsolete. Not a whole lot of adjustment would be needed. For 8 psi or more systems, the Xede would be more of a needed item. You will need to make some adjustments in timing, fueling, etc. I am certain it could be done. I am just not sure I would do it on my car. But then again, I tend to err on the side of caution.

Remember, the Xede is not a piggy back. It is an interceptor tuning device. there is no "fighting" it. There is no "it works sometimes".
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Old 11-18-2010, 02:44 AM   #22
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Sorry if it was mentioned in the first post or on the website, but will this be available for older cars? Are you guys going to further investigate to see how far you can take the stock ecu?
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Old 11-18-2010, 02:48 AM   #23
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Something stinks here...I am very skeptical as to how a stock ECU with a MAF and a narrowband can achieve something like this when everybodys turbo setup is different. I.E. If I change my exhaust for example, I'd need to send my ECU for a reprogram again? Owning something like a megasquirt sounds way more independent to me.
No stinkies. Is it the best, or the be all, end all? No. But it has its place. Especially for those who want standalone ECU performance on the stock ECU. In my opinion, for the price and capability, it is very hard to beat the Megasquirt. But it is not emissions legal. Whereas the reflash (and Xede too if needed) would be.

The stock MAF is good to about 14 psi on the NB. The narrow band is only needed for closed loop fuel control. You must remember, when this car goes open loop it runs about 12:1 near red line (when not in boost). And the ECU won't be taking feedback from the narrow band then anyway. All we do change it to go open loop sooner (not based on rpm) and make it extend the injector pulses sooner. If more than 14 psi is desired, we have a few trick up our sleeve. We will be testing it soon.

If you changed an exhaust, yes it would necessitate a reflash. That is where the Xede would come in handy. The ECU reflash is not the perfect solution for everyone. But for some, the simplicity appeals.
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Old 11-18-2010, 02:58 AM   #24
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Im not sure what kind of resolution maps these ECUs have, but it cant be any worse than MS, and we have all seen how much you can do on what is generally considered very low resolution.
The resolution is the 1/2 million lines of code written into the ECU already. It is a matter of knowing the code, knowing where to find what you want, and how to change it to do what you want. No tables here.
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Old 11-18-2010, 03:00 AM   #25
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In your third test car, why are you running the Xede with the flashed ecu? Can the ecu flash no handle 550cc injectors on it's own?
Yes, it can. It was my choice as I wanted to retain the adjustability.
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