Open Flash Tablet - OFT TIPS Trick’s & FAQ

[OrangeGuitar]

Originally Posted by Mattstermh

Cool man, thanks. I'm honestly just a normal street driver, to and from the work, and occasional errands. Still worth the $400 pricetag? I'm not redlining, and I drive an automatic.

Someone else might be able to comment about the automatic as I drive a manual. The different tunes make a difference from stock with 91, 93 and e85. OFH is even better.
I felt it was worth it even without OFH or e85 but the value is subjective. Better tires and OFT are best value mods without going FI IMO.


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[Mattstermh]

Originally Posted by OrangeGuitar

Someone else might be able to comment about the automatic as I drive a manual. The different tunes make a difference from stock with 91, 93 and e85. OFH is even better.
I felt it was worth it even without OFH or e85 but the value is subjective. Better tires and OFT are best value mods without going FI IMO.


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I don't have an aftermarket header, all stock. I use 93 octane though.

[alxtheoreo]

Originally Posted by Mattstermh

I don't have an aftermarket header, all stock. I use 93 octane though.

I say get it. It's worth the money.

I also suggest lighter wheels & grippier tires.

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[Rezi]

Which tune, especially avcs should people run with a modified oem header? (hfc welded in)

From my guess there is no difference between catless and a 200cpi hfc, so should the stg 2 el avcs be fine for it?(not the other changes between stg1 and stg2, just the avcs for intake/exhaust)

[freerunner]

Yes, pick either S2 EL (E85) or (non-E85) AVCS tables for the base map.

For the stock catted header it was easier for me to use the E85 maps and further reduce the exhaust retard at the obvious lean spots afterwards.
However, for a modded stock header it may be better to use the non-E85 version (no XP here).

I'd recommend to insert both into a copy of your current calibration and to go logging with them. Then let your butt dyno and/or logs decide.

[Rezi]

Originally Posted by freerunner

Yes, pick either S2 EL (E85) or (non-E85) AVCS tables for the base map.

For the stock catted header it was easier for me to use the E85 maps and further reduce the exhaust retard at the obvious lean spots afterwards.
However, for a modded stock header it may be better to use the non-E85 version (no XP here).

I'd recommend to insert both into a copy of your current calibration and to go logging with them. Then let your butt dyno and/or logs decide.

I'll give it a try. Doing some logs and then decide if it is okay.
So you run the Stg2 EL E85 AVCS on your stock header (cat) with petrol in the tank?

[freerunner]

Originally Posted by Rezi

So you run the Stg2 EL E85 AVCS on your stock header (cat) with petrol in the tank?

More or less. At some point of time I saw a dyno-plot from a guy who was running E85 on his otherwise stock car. It was plain to see that there was a significant improvement in the dip region. I wondered why. So I went ahead and had a look at the differences of both calibrations (s2 el 85 & s1). There were no particular differences between both calibrations (aside from the obvious changes regarding fuel quantity) except the avcs tables.
So I copied the rows affecting torque dip into my s1 calibration. The difference was quite noticeable. It also cured the pesky lean spot in that rpm range, which could not be controlled with the load-limit tables.

I have to notice, that I were not able to solve this on my own because I doubted my ability to do a proper maf calibration. But then 86inches' ingenius spreadsheet came to the rescue. After working with that sheet and tons of logging I began to counter all the more intense lean spots in my wot-logs with valve timing. According to the butt-dyno, the engine picked up performance and spontaneity. But maybe I'm just fooling myself, since I don't have a dyno

Still need to verify with vgitool's volumetric efficiency tool. Hoping for better weather.

[Rezi]

Originally Posted by freerunner

More or less. At some point of time I saw a dyno-plot from a guy who was running E85 on his otherwise stock car. It was plain to see that there was a significant improvement in the dip region. I wondered why. So I went ahead and had a look at the differences of both calibrations (s2 el 85 & s1). There were no particular differences between both calibrations (aside from the obvious changes regarding fuel quantity) except the avcs tables.
So I copied the rows affecting torque dip into my s1 calibration. The difference was quite noticeable. It also cured the pesky lean spot in that rpm range, which could not be controlled with the load-limit tables.

I have to notice, that I were not able to solve this on my own because I doubted my ability to do a proper maf calibration. But then 86inches' ingenius spreadsheet came to the rescue. After working with that sheet and tons of logging I began to counter all the more intense lean spots in my wot-logs with valve timing. According to the butt-dyno, the engine picked up performance and spontaneity. But maybe I'm just fooling myself, since I don't have a dyno

Still need to verify with vgitool's volumetric efficiency tool. Hoping for better weather.

Interesting. Thanks!
I also played with the new MAF Shaping Tool but at some point i am stuck. Those formulas are driving me crazy.

Longterm i dont see any danger using the stg2 el avcs if the values in the logs look good?

[Lantana frs]

Funny how a good tune will trick the ass dyno. Its almost as if the drama of the stock powerband was meant to enhance the "driving experience". However the relative ease of acceleration and smooth revs that e85 provides makes me smile and feel satisfied with this car.

[freerunner]

Originally Posted by Rezi

Longterm i dont see any danger using the stg2 el avcs if the values in the logs look good?

Nope. Just make sure it isn't knocking due to increased dynamic compression. I started with 2-3° less of ignition timing before the first try but came back to the usual values since then.

The best AVCS is dependent on nature of the intake and exhaust tract, not fuel type.

[sixthree]

Hey guys,

Just got a new oft and followed the instructions on how to install. The oft read my ecu but after reading and saving it. The tablet shows "Ecu read but file is unrecognized". The read or write button options are now greyed out. Now my check engine light is on and engine breaking seems alot rougher now.

[HachiRolle]

Any updates for officially released flashes for 2017s? Last I was aware only betas were available, but I've heard mixed sources say that the 2017s do have full support now.

[Tor]

Originally Posted by freerunner

At some point of time I saw a dyno-plot from a guy who was running E85 on his otherwise stock car. It was plain to see that there was a significant improvement in the dip region. I wondered why. So I went ahead and had a look at the differences of both calibrations (s2 el 85 & s1). There were no particular differences between both calibrations (aside from the obvious changes regarding fuel quantity) except the avcs tables.

There is also significatly more ingnition timing.

Originally Posted by freerunner

The best AVCS is dependent on nature of the intake and exhaust tract, not fuel type.

Since there is significantly more timing in the E85 tunes the combustion is taking place at an earlier point in the cycle. Wouldn't that must affect the optimum values for valve timing to a certain degree as well? Also wouldn't a higher cylinder pressure affect how much overlap is desireable for scavanging?

[steve99]

Originally Posted by HachiRolle

Any updates for officially released flashes for 2017s? Last I was aware only betas were available, but I've heard mixed sources say that the 2017s do have full support now.

The OFT is capable of reading and writing to 2017 ecu ( its same) but the tuning especially fueling is different to previous car so new tunes need to be develoed.

last time i talked to shiv he was expecting to have a 2017 on dyno, to further develop stage1 and 2 tunes. they have some basicc tunes out for 2017 manuals, the auto ecu doesnt use the new fueling logic

best ask shiv on facebook or telephone