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Old 06-10-2021, 10:51 AM   #15
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So if I use a tune that is listed and not a custom or downloaded tune I will be fine? Such as the e85 or stage 2 that is already on it?
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Old 06-10-2021, 11:01 AM   #16
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So if I use a tune that is listed and not a custom or downloaded tune I will be fine? Such as the e85 or stage 2 that is already on it?
Probably yeah. Preloaded tunes have already been dialed in pretty well

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Old 06-10-2021, 11:49 AM   #17
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Sweet. I’m still learning so I am doing more reading than anything. Thanks
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Old 06-10-2021, 11:59 AM   #18
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So if I use a tune that is listed and not a custom or downloaded tune I will be fine? Such as the e85 or stage 2 that is already on it?
The V4 tunes are shit. It will be safe, but they are not great.
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Old 06-11-2021, 06:59 AM   #19
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The V4 tunes are shit. It will be safe, but they are not great.
Honestly I think the majority of people here rather safe than sorry to pull like an extra 5 to 10 hp more out
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Old 06-11-2021, 07:00 AM   #20
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A GOOD tune when loaded runs perfectly in minutes. A POOR tune needs hundreds of miles for the ecu to adjust unsuitable settings ie timing and fuel mixture. The ecu does this normally for changes in fuel and operating conditions but should not need to do it to a poor/dangerous tune.
On a second note if something goes wrong when installing the tune your ecu is toast! Not that it will happen but the more you change them the more complacent you become and the greater the chance.
Yeah ofcourse I try and keep flashing at a minimum. Question though, let's say ecu is toast, is it just an ecu replace or the engine as well?
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Old 06-11-2021, 07:02 AM   #21
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Yeah ofcourse I try and keep flashing at a minimum. Question though, let's say ecu is toast, is it just an ecu replace or the engine as well?
Just ECU. He's talking about the flashing process getting messed up halfways through and getting stuck

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Old 06-11-2021, 07:03 AM   #22
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Common things to start with are toggling FFS/LC, MAF scaling, adjusting the IAM, changing delay factors, O2 scaling, and VVT adjustment for aftermarket headers. ROMRaider is the tool of choice for most OFT modifications.

V4 tunes do not need a lot of adjustment on a stock car (at least not on mine), though going through the motions to do them is a good way to get familiar with the tools and methods. I think my current tune has a lower cl-ol delay, .9 IAM, and I backed off timing at higher ambient temperatures.

As for advanced stuff like changing the logic for valet mode and such, it CAN be done, but it is well beyond my knowledge level.
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Originally Posted by gen3v8 View Post
A GOOD tune when loaded runs perfectly in minutes. A POOR tune needs hundreds of miles for the ecu to adjust unsuitable settings ie timing and fuel mixture. The ecu does this normally for changes in fuel and operating conditions but should not need to do it to a poor/dangerous tune.
On a second note if something goes wrong when installing the tune your ecu is toast! Not that it will happen but the more you change them the more complacent you become and the greater the chance.
Side question, the OFT website says "stock or drop in air filter" for the intake for all the stages. I've been running a stage 1 with a cold air intake with no issues. Was wondering is this bad if I continue to stage 2+? Don't really wanna remove the cai but want to go to 2+ with it

Last thing, for some reason in my head I tend to believe not to flash the car when it's hot and wait till cool down. Good practice or just some mumbo in my head?
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Old 06-11-2021, 08:37 AM   #23
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Side question, the OFT website says "stock or drop in air filter" for the intake for all the stages. I've been running a stage 1 with a cold air intake with no issues. Was wondering is this bad if I continue to stage 2+? Don't really wanna remove the cai but want to go to 2+ with it

Last thing, for some reason in my head I tend to believe not to flash the car when it's hot and wait till cool down. Good practice or just some mumbo in my head?
Cold air intakes change how the air flows across the mass air flow (MAF) sensor. You can correct for this in the tune. Look up the MAF Scaling thread in the software tuning section of the forum. Without correction, the engine will probably still run decently as you have noticed, but it will produce less power, less reliably because the amount of air it thinks it is using will be wrong.

You can flash the car hot. I would do it all the time when making adjustments.

Note: Stage 2+ is for cars with catless headers iirc. You probably know that, just making sure.
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Old 06-11-2021, 10:38 AM   #24
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Have you been to the software tuning forum?
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Old 06-11-2021, 10:45 AM   #25
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Honestly I think the majority of people here rather safe than sorry to pull like an extra 5 to 10 hp more out
I think you are misinterpreting me saying they are shit= making less power then they should.

What I mean, is there seem to be a lot of issues with the V4 tunes that people have had. MAF compensation tables not being correct, weird idle and throttle behavior. There were issues with their previous revisions too, but V4 seemed to have more issues when it should be more polished. I also don't like that they default IAM to .7 instead of 1.
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Old 06-11-2021, 05:22 PM   #26
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Have you been to the software tuning forum?
I'm gonna be honest I went and don't understand most of what's going on there
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Old 06-11-2021, 05:30 PM   #27
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I think you are misinterpreting me saying they are shit= making less power then they should.

What I mean, is there seem to be a lot of issues with the V4 tunes that people have had. MAF compensation tables not being correct, weird idle and throttle behavior. There were issues with their previous revisions too, but V4 seemed to have more issues when it should be more polished. I also don't like that they default IAM to .7 instead of 1.
I found V4 to work better out of the box than v2.
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Old 06-11-2021, 05:50 PM   #28
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Cold air intakes change how the air flows across the mass air flow (MAF) sensor. You can correct for this in the tune. Look up the MAF Scaling thread in the software tuning section of the forum. Without correction, the engine will probably still run decently as you have noticed, but it will produce less power, less reliably because the amount of air it thinks it is using will be wrong.

You can flash the car hot. I would do it all the time when making adjustments.

Note: Stage 2+ is for cars with catless headers iirc. You probably know that, just making sure.
okay so the intake I have is this

https://www.knfilters.com/cold-air-i...0l-h4-gas/2013

I'd really appreciate if someone could help find the right MAF value I'm supposed to look for, and where in the OFT you would change it. Very new to this, the software section in the forums is seeming too complicated and can't find a finished thread on this

Also yup just installed catless headers a couple days ago


Edit: Just wanted to clarify I bought the cai used just for the sound, I know it doesn't make any power difference but I really like the grrrrrrr sound it makes
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