Negative corrections

[Kaw8787]

Did some 3rd/4th highway pulls. Is the numbers on cyl 1&4 bad?

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[PRG3k]

Is this an off the shelf tune? I believe its normal for the OTS tunes to pull timing like that. 2.00 or more degrees of timing pull is where you can start to look for problems and bad fuel. Also, if you're going to monitor a cylinder, make it cylinder 3.

 

[Kaw8787]

Is that the one by the weak spot in the block?

 

[Kaw8787]

And yes it is an OTS Cobb tune. I haven’t decided which pro tuner I wanna go with. But was thinking Adam or PD

 

[PRG3k]

Yes, most common cylinder for any issues.

 

[Brodirt]

Yes, most common cylinder for any issues.

I just installed my Cobb AC3 and am running their OTS stage 2 tune, my car has FBO minus downpipe.
Is it recommended to monitor cylinder 2 even with relatively modest upgrades?

 

[PRG3k]

I just installed my Cobb AC3 and am running their OTS stage 2 tune, my car has FBO minus downpipe.
Is it recommended to monitor cylinder 2 even with relatively modest upgrades?

You mean cylinder 3? I would always watch it regardless of mods. The AP let's you monitor up to 6 parameters so you can watch 'Ign. Corr.' for all four cylinders plus two other settings if you like.

 

[Brodirt]

You mean cylinder 3? I would always watch it regardless of mods. The AP let's you monitor up to 6 parameters so you can watch 'Ign. Corr.' for all four cylinders plus two other settings if you like.

Dont these engines crack blocks most commonly at cylinder 2?

 

[BlueBoost]

Did some 3rd/4th highway pulls. Is the numbers on cyl 1&4 bad?

Those are some really low Charge temps. Which intercooler are you running?

 

[Marvinmadman]

Ohio winter intercooled

 

[Kaw8787]

Those are some really low Charge temps. Which intercooler are you running?

Stock FMIC. It’s in the mid 40’s here in Ohio so my charges are going to be low.

 

[BlueBoost]

Stock FMIC. It’s in the mid 40’s here in Ohio so my charges are going to be low.

Figures. Mid 90s here in South Florida so mine get into the 100's.

 

[Kaw8787]

2.95 on #3, do I need to be concerned here? What’s the acceptable level of negatives? 18 eco Cobb stage 1 tuned.

 

[PRG3k]

Dont these engines crack blocks most commonly at cylinder 2?

The problem starts with detonation in the cylinder. Wherever the block cracks is simply that force following the path of least resistance. The 'weak spot' in the block thing is, well the whole carriage is crappy. @Juben is a very knowledgeable poster and drops some very good info related to this very topic on pages 5-6 of this thread:
https://www.mustang6g.com/forums/threads/unleashed-tune-blew-my-ecoboost-mustang-up.89274/page-5

The overwhelming majority of failures start in cylinder 3. Others have failed to be sure, but #3 is the most common. As to why, its up for debate. When mine failed, 3 was the magic number. Monitor it.

2.95 on #3, do I need to be concerned here? What’s the acceptable level of negatives? 18 eco Cobb stage 1 tuned.

Is this the new OTS tune for the 18's that just came out? Could be some bad gas or their tune might need some tweaking as both are possible. What fuel is this tune for and is your OAR at -1?

 

[Kaw8787]

Yes it’s the 2018 OTS Cobb stage 1 nap. I almost always use BP 93 octane. I’ll check that OAR thing in a bit.

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