Official OpenFlash Tablet FA20 Tuning Tech Discussion Thread

[steve99]

Originally Posted by guybo

OK, a couple things I am a little confused on with OFT- Can someone answer a couple questions for me?

-With an OFT stage 2 tune and a totally catless setup, does the OFT turn off the P0420 CEL with a standard stage 2 tune, or do I have to tweak the tune to turn it off? I have the latest 2.076 tune files.

-Can I uninstall the second O2 sensor if I am catless? I'd like to put my own wideband O2 sensor in that bung if I can, otherwise I have to install a O2 bung downstream.

All oft tunes for catless headers ie all stage 2 tunes will disable P0420 cel code for cat efficiency.


The primary fuelling sensor is the first 02 sensor, don't change that.


If you do want to replace the secondary 02 sensor (second one usually behind cat) then you will have to modify tune and disable rear 02 sensor cel codes and fueling compensations in romraider.Else you will throw all sorts of cel codes and likely get weird cruise fueling on highway.


For NA cars and even turbo's you can just rescale the front 02 sensor it will read quite reliably down to about 10 AFR, so no real need for a wideband unless you need to wire in the failsafe function.


you can use the guage function on oft to monitor AFR and even set alarm points for running lean at rpm/load/afr points

[Teseo]

Yes, the stage 2 uel tune disable 0420 cel code

[guybo]

Ok thanks. I read a lot of this thread but I was searching and found a post saying that the tune has to be tweaked to disable the p0420, even though I understood it was already disabled.

So Torque Pro is accurate enough, I don't need the wideband gauge? Saves me some trouble. I guess I'll sell it, I had it installed in my Gencoupe and TBH, that OEM O2 sensor and Torque Pro was more than adequate I didn't need the gauge.

[steve99]

Originally Posted by guybo

Ok thanks. I read a lot of this thread but I was searching and found a post saying that the tune has to be tweaked to disable the p0420, even though I understood it was already disabled.

So Torque Pro is accurate enough, I don't need the wideband gauge? Saves me some trouble. I guess I'll sell it, I had it installed in my Gencoupe and TBH, that OEM O2 sensor and Torque Pro was more than adequate I didn't need the gauge.

you will need to mod a couple of tables in tune as per link below


http://www.ft86club.com/forums/showp...8&postcount=16

[thornad]

Hi all,
I am using Stage2 UEL OTS (OFT) map with a Tomei UEL and an Extreme Sports flywheel (7 kg instead of 9.3kg stock).

The car feels as if it has less torque at low rpms, I believe because there is less weight helping the engine turn over.

It feels like I should not shift into 3rd anywhere bellow 30mph, because the engine almost chokes struggling to put down torque (like trying to start in 3rd). With stock flywheel I would shift to 3rd around 20mph with no problem all the time.

So I am wondering if there is any map out there taking care of this or how should I modify the OTS map to compensate?
Something to do with now having less Load at any given rpm?
Or any other suggestions to solve this issue?

Cheers,

[alxtheoreo]

Originally Posted by thornad

Hi all,
I am using Stage2 UEL OTS (OFT) map with a Tomei UEL and an Extreme Sports flywheel (7 kg instead of 9.3kg stock).

The car feels as if it has less torque at low rpms, I believe because there is less weight helping the engine turn over.

It feels like I should not shift into 3rd anywhere bellow 30mph, because the engine almost chokes struggling to put down torque (like trying to start in 3rd). With stock flywheel I would shift to 3rd around 20mph with no problem all the time.

So I am wondering if there is any map out there taking care of this or how should I modify the OTS map to compensate?
Something to do with now having less Load at any given rpm?
Or any other suggestions to solve this issue?

Cheers,

Did you recently flash (or reflash) the ecu? If so, it will feel flat on the low-end because it needs to learn again.

If not, shift at a higher point... like between 3500-4000 RPMs. No engine likes to be lugged around.

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[thornad]

Thanks for the quick reply.
Re-flashed it 3 days ago, after having the clutch, flywheel and UEL installed.
Did about 10 hours of driving since.

[oldgunfan]

Originally Posted by thornad

Thanks for the quick reply.
Re-flashed it 3 days ago, after having the clutch, flywheel and UEL installed.
Did about 10 hours of driving since.

Have you calibrated the MAF sensor?? If not that would help alot.

[ssworks]

Heres a Noob question.

I do not want my car any louder than stock exhaust, with that in mind is it worth investing in this tuning solution with only filter upgrade and Perrin intake hose upgrade?

[alxtheoreo]

Originally Posted by ssworks

Heres a Noob question.

I do not want my car any louder than stock exhaust, with that in mind is it worth investing in this tuning solution with only filter upgrade and Perrin intake hose upgrade?

Yes

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[ssworks]

Originally Posted by alxtheoreo

Yes

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Thanks for the reply. That sounded like a resounding yes lol.
putting it back on the list.

[alxtheoreo]

Originally Posted by ssworks

Thanks for the reply. That sounded like a resounding yes lol.
putting it back on the list.

Oh it is. The tune will improve driveability through the entire RPM band. If I ever need to get rid of my UEL header, I will revert back to stage 1.

Try to find OFT used. It'll go for $300-400.

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[ssworks]

Originally Posted by alxtheoreo

Oh it is. The tune will improve driveability through the entire RPM band. If I ever need to get rid of my UEL header, I will revert back to stage 1.

Try to find OFT used. It'll go for $300-400.

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That was going to be my next question, If i can get it used or is it locked to the car, but decided to do some research/reading first.
thanks for that, i will definitely look in the classifieds for a used one.

[alxtheoreo]

Originally Posted by ssworks

That was going to be my next question, If i can get it used or is it locked to the car, but decided to do some research/reading first.
thanks for that, i will definitely look in the classifieds for a used one.

Anytime

The key word is "unmarried". You'll need to be certain the previous owner unmarried OFT from their car. Also make make sure they have the OBD2 cable, plus the mini USB cable so you can update the OTS maps.

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