Mail-in Flash Update
Thread Starter
Former Sponsor
iTrader: (3)
Joined: Mar 2003
Posts: 793
Likes: 0
From: Arlington Heights, IL
Mail-in Flash Update
We've been bombarded with questions about mail-in flashes. I would like to share my thoughts and progress on it.
I keep a VERY detailed log of every car I flash, including every mod and ignition timing/AF logs of every run. I've been looking at the data and I've noticed a few things. Comparing just 2003 EVO 8's, I've seen pretty significant varianced right from the factory on Air/Fuel ratio's. Also some cars which are bone stock are riding the knock sensor in certain RPM ranges! Having said this, I hope everyone understands that a mail in flash is risky, especially if not done correctly. To minimize risk I'm putting together a package that will increase horsepower, but still be conservative. I'm being very cautious with A/F and touching up the timing curve. I am controlling boost with the flash so instead of spiking to 19-20psi and dropping to 16, the boost will hit 20psi and drop to only 18psi. There is also one simple modification that we'll include in an instruction sheet for the mail-in flashes that will bump the boost to 21-22psi and holding right under 20psi. I wouldn't recommend the latter on anything less than 93 oct fuel. These mods on a car with a stock boost control selenoid should yield some healthy gains, we're talking rouhgly 20-30whp.
I have two test cars here and I will be putting up a post for 2 more test cars from the forums that will recieve a special price, but they must have access to a wideband and/or dyno.
The same goes for 2004 and 2005 EVO's, I'll be putting together a program at the same time.
With any of our mail-in flashes we'll have a list of parts that we recommend to use with our flash and also parts that you should not run in getting the ECU flashed. If you do have access to a wideband o2 you can send your logs in with your ECU. I will tweak your fuel map accordingly at no extra charge. We're working on a page on our site with all this info, so stay tuned!!
-Martin
I keep a VERY detailed log of every car I flash, including every mod and ignition timing/AF logs of every run. I've been looking at the data and I've noticed a few things. Comparing just 2003 EVO 8's, I've seen pretty significant varianced right from the factory on Air/Fuel ratio's. Also some cars which are bone stock are riding the knock sensor in certain RPM ranges! Having said this, I hope everyone understands that a mail in flash is risky, especially if not done correctly. To minimize risk I'm putting together a package that will increase horsepower, but still be conservative. I'm being very cautious with A/F and touching up the timing curve. I am controlling boost with the flash so instead of spiking to 19-20psi and dropping to 16, the boost will hit 20psi and drop to only 18psi. There is also one simple modification that we'll include in an instruction sheet for the mail-in flashes that will bump the boost to 21-22psi and holding right under 20psi. I wouldn't recommend the latter on anything less than 93 oct fuel. These mods on a car with a stock boost control selenoid should yield some healthy gains, we're talking rouhgly 20-30whp.
I have two test cars here and I will be putting up a post for 2 more test cars from the forums that will recieve a special price, but they must have access to a wideband and/or dyno.
The same goes for 2004 and 2005 EVO's, I'll be putting together a program at the same time.
With any of our mail-in flashes we'll have a list of parts that we recommend to use with our flash and also parts that you should not run in getting the ECU flashed. If you do have access to a wideband o2 you can send your logs in with your ECU. I will tweak your fuel map accordingly at no extra charge. We're working on a page on our site with all this info, so stay tuned!!
-Martin
Last edited by AMS; Mar 17, 2006 at 07:33 AM.
I hope everyone understands that a mail in flash is risky, especially if not done correctly
Originally Posted by AMS
I am controlling boost with the flash so instead of spiking to 19-20psi and dropping to 16, the boost will hit 20psi and drop to only 18psi.
-Martin
-Martin
Is there any advantage to controlling boost with the flash vs. an MBC? To me, it seems like a safer option, not having to worry about any potential problem with an MBC. Your thoughts?
Chris
Trending Topics
how much is a flash for a evo 9 with just an exhaust.
I am picking my 9 in 3 weeks and might be interested.
I am looking into a custom flash, not a mail flash.
Info would be much appreciated.
I am picking my 9 in 3 weeks and might be interested.
I am looking into a custom flash, not a mail flash.
Info would be much appreciated.
