Official OpenFlash Tablet FA20 Tuning Tech Discussion Thread

[steve99]

Originally Posted by gepeyo

So I received my OFT from a friend who unmarried the OFT from his car and I erased the file off the OFT before i used it on my car. As i did the first read with my OFT the screen and it seemed to had saved all the way. But suddenly turns into numbers with an okay box under it. I ended up unplugging the OFT because the message kept coming up over and over and over again giving me a "6041". As i plugged the OFT back into the car it was only able to write (the read option was greyed out) so i tried stage 1 tuning and it worked out successfully. I thought I should of tried tuning my car back to original after driving my car for a while and when i tried to go back to original the OFT said there was an error and reseted and suddenly the car info said i was at original save. I got worried that my OFT corrupted my original tune file, so i retuned it back to Stage 1 and left it as is and came here to see if theres anyone whose experience this or what i should do.

Sounds a bit suspect.

I would talk to the openflash guys on the phone

does the car run ok when you wrtite the original file ?
If so write the original file back to car . make sure it runs ok.

Then erase oft using ofm and start from scratch again. ie read original file ect.

But talk to the openflasdh guys first.

[86Tony]

Hey guys I'm from Canada I use 94 petro here what map do I run also mines a 2015

[troek]

Originally Posted by 86Tony

Hey guys I'm from Canada I use 94 petro here what map do I run also mines a 2015

try the 93 map, do some logs and see how it runs.

[RFB]

Originally Posted by 86Tony

Hey guys I'm from Canada I use 94 petro here what map do I run also mines a 2015

93 toon, Pierre Elliot Trudeau Ripped Off CANada 94 octane corn piss, catted header, cat back.

Runs fine, but once in a while it needs a tiny shot of Torco iff'n I get some bad socialist gas.
I found it was a rare occurrence (so far) as I monitor knock closely.

When I use real 94 (mix - Sunoco 91 and race gas, using no ethanol) the car shows similar knock characteristics, but butt dyno and xhaust sound (smoother, louder, change in pitch) indicate to me and others who have tracked my twin that mo powa is being generated.

I have tried our pure gas (Sunoco 91 without alcohol) and brought the octane up to varying levels, and that accomplishes the same thing. I do that when pure hi-octane race gas is unavailable.
Placebo perhaps but I doubt it .

When I get some spare sheckels I'll add them to the rubles that are left over from track fees, waste it on a dyno and see the real numbers.

[SilverlightPony]

Oh look another bugged-up thread (shows 114 pages, but trying to load page 114 redirects back to 113). :/

[jdcorbitt3]

Originally Posted by Grip Ronin

quick question. when logging injection mode is (1) port only, (2) direct only and (3) blended???

I have been wondering the same thing. I never found an answer.

John

[troek]

its been covered a few times in the forums, i cant seem to find it now though lol. i think maybe in the maf scaling tutorial..

[Wayno]

MAF Correction After Start AT/MT difference.

Could the difference in these tables account for the wildly different MAF behavior between AT and MT?

OTS MT with OTS MAF scale and stock intake AFR behavior:
http://datazap.me/u/deanveljkovic/86...2657-2699-2677

OTS AT with OTS MAF scale and stock intake AFR behavior:
http://datazap.me/u/wayne/206-stg2-u...1330-1354-1371

The MT seems to cross over into each MAF cell about 200rpm later. Could these tables be why I've been chasing my tail for months? Or is this wishful thinking as these tables are only used in idle/start/etc and need to just work around it. I've never seen an AT with flat AFR curve on OTS tune like MT's have.

After updating to Td-d's latest definitions instead of using the ones from openflash, you can clearly see this is the only major difference defined between AT and MT that could possibly effect AFR's.

@Td-d
@steve99
@Shiv@Openflash
@Kodename47

[steve99]

@Wayno , i am pretty sure those maf offset tables only effect maf offset after start and once startup sequence comple no further effect , although only the rom gurus would know 100%.

might be difference in maf sensor itself ,my car always runs pig rich on oft tunes mine ran 11.2 on e85 tunes just flatlined at rich limit of sensor like some others, where as other cars run closer to the ol fuel table like yours, seen it in usa guys cars as well some run rearly rich some dont.

the ones that run rearly rich can get that low rpm high load bogging issue

it could also be 02sensor placement issue on aftermarket headers

[Wayno]

Originally Posted by steve99

@Wayno , i am pretty sure those maf offset tables only effect maf offset after start and once startup sequence comple no further effect , although only the rom gurus would know 100%.

might be difference in maf sensor itself ,my car always runs pig rich on oft tunes mine ran 11.2 on e85 tunes just flatlined at rich limit of sensor like some others, where as other cars run closer to the ol fuel table like yours, seen it in usa guys cars as well some run rearly rich some dont.

the ones that run rearly rich can get that low rpm high load bogging issue

it could also be 02sensor placement issue on aftermarket headers

It's not so much that it runs rich or lean, it's just that it goes super rich at 3.2v, then ok at 3.4v, then rich by 3.9, then super lean at 6400rpm at 4.06v, then finally super rich in the same MAF cell, doesn't matter how much you let it adapt, it always goes from 12.5 to about 11.5 in one cell.

[steve99]

Originally Posted by Wayno

It's not so much that it runs rich or lean, it's just that it goes super rich at 3.2v, then ok at 3.4v, then rich by 3.9, then super lean at 6400rpm at 4.06v, then finally super rich in the same MAF cell, doesn't matter how much you let it adapt, it always goes from 12.5 to about 11.5 in one cell.

I believe the is an Engine Load Compensation table EL Comp, i have not used it but @ztan and @MFB have mentioned using it, i believe to sort out those kind type of issues

[Wayno]

Originally Posted by steve99

I believe the is an Engine Load Compensation table EL Comp, i have not used it but @ztan and @MFB have mentioned using it, i believe to sort out those kind type of issues

Yep, I've seen that but 4800rpm and above is all zero'd on AT and MT. Trying to find an obvious cause rather than work around it. I have 3 4th gear dyno graphs of AT cars with the exact same shape. 3.7 gets rich, 3.9 gets super rich, 4.0 gets super lean then super rich again. MT on the other hand is usually flat, still shitty rich and inconsistent, but flat.

[steve99]

yep thats weird pretty much out of ideas

[Wayno]

Originally Posted by steve99

yep thats weird pretty much out of ideas

Yeah apart from the box itself and the ecu, there's nill hardware differences, so has to be something software related.

I'll switch to the MT MAF comp table and test it today.

I should also mention the same difference in behavior is at the same intake temp for both AT and MT.