More downpipe troubles

[FreePenguin]

Afe filter is lifetime warranties, not that you’d ever need it

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[Rapid Red]

What do you wash and oil yours with?

Simple green but do use the K&N oil, rise the filter . Nozzle blasting hurts the filter media.
You can also get a dry K&N element, drivers choice..

 

[FreePenguin]

Yep, gentle water passing through it. Dirty side down first. Let the cleaner soak for like 10 mins, i do a few cleaner and rinse cycles. Then I air dry for nex 24/48 hours. That’s why I said keep your orig filter so you can keep in box while dries, then oil it. Let soak in flip over oil that too. wipe any excess off the rubber sides. That’s it.

 

[CorvZ061]

You know it’s honestly possible that Cobb tells it 10afr to prevent detonation. Next time I go play I will romp and see what I get on my afr’s

Once you floor it, it’s ignoring o2 sensors I think. It goes into open loop and just goes off predetermined data tables made by cobb for wot

it just dumps the fuel Cobb tune says, and if that happens to be 10afr, because you flow a little better then that is what it is. Pure speculation on my part

You're speculation is incorrect. It most definitely does use the o2 sensor at WOT. It had to be able to correct mixture to meet whatever the tune is calling for at a given load. Cobb tunes, at least on the Focus ST (my experience with accessport is that platform) are mild on timing, with a pig rich AFR. My car never ran good with a Cobb OTS Tune. OP needs to get a pro tune, it'll be night and day over what he currently has.

 

[FreePenguin]

You're speculation is incorrect. It most definitely does use the o2 sensor at WOT. It had to be able to correct mixture to meet whatever the tune is calling for at a given load. Cobb tunes, at least on the Focus ST (my experience with accessport is that platform) are mild on timing, with a pig rich AFR. My car never ran good with a Cobb OTS Tune. OP needs to get a pro tune, it'll be night and day over what he currently has.

On my motorcycles sportbikes, when you wot it, it completely disables the o2 sensors completely (edit, they aren’t physically turned off, and still reads data, but they don’t use the data read as any influence) .

They only come back in closed loop, wot circumvents the o2 entirely.
It says dump fuel, at this pedal position, etc other variables I’m sure. But Atleast on sportbikes, o2 is NOT a factor.

cars can be diff but I’m using my crossover knowledge

I feel the mustang is same way

Old s197 but evidently in open loop the o2 also is ignored. Open loop happens during warming up and wot.

closed loop/open loop

 

[Timmonsxp1]

You're speculation is incorrect. It most definitely does use the o2 sensor at WOT. It had to be able to correct mixture to meet whatever the tune is calling for at a given load. Cobb tunes, at least on the Focus ST (my experience with accessport is that platform) are mild on timing, with a pig rich AFR. My car never ran good with a Cobb OTS Tune. OP needs to get a pro tune, it'll be night and day over what he currently has.

Yeah I'm having trouble getting the original boost I was getting before the DP . I did a 2nd gear pull all the way to redline and I only got 20.5lbs. down from 23-24 originally.

 

[Timmonsxp1]

On my motorcycles sportbikes, when you wot it, it completely disables the o2 sensors completely (edit, they aren’t physically turned off, and still reads data, but they don’t use the data read as any influence) .

They only come back in closed loop, wot circumvents the o2 entirely.
It says dump fuel, at this pedal position, etc other variables I’m sure. But Atleast on sportbikes, o2 is NOT a factor.

cars can be diff but I’m using my crossover knowledge

I feel the mustang is same way

Old s197 but evidently in open loop the o2 also is ignored. Open loop happens during warming up and wot.

closed loop/open loop

What's weird is on stage 3 I can't seem to get over 20lbs of boost. On stage 2 boost seemed somewhat normal. It did over boost though once to 25.66lbs and that was the highest est. Hp and tq I've ever seen the car pull lol

 

[FreePenguin]

What's weird is on stage 3 I can't seem to get over 20lbs of boost. On stage 2 boost seemed somewhat normal. It did over boost though once to 25.66lbs and that was the highest est. Hp and tq I've ever seen the car pull lol

Wonder if maybe got a small boost leak at one of the clamps.
On cobbs site under maps, it shows you the psi targets etc under maps

but! I put 2017 ecoboost and I can only find 1/2 stage

stage 3 is completely removed. Trying to find thepsi targets you should be hitting I think it’s 24.5 tapering to 23

 

[Timmonsxp1]

Wonder if maybe got a small boost leak at one of the clamps.
On cobbs site under maps, it shows you the psi targets etc under maps

but! I put 2017 ecoboost and I can only find 1/2 stage

stage 3 is completely removed. Trying to find thepsi targets you should be hitting I think it’s 24.5 tapering to 23

Yeah I use to get 24.5 roughy. Of course there is variables. But since I put on the DP and changed to S3 I haven't hit 24 once.
So I don't see how I could have a turbo leak If it was putting 24 lbs before the DP.

 

[FreePenguin]

What I meant was, maybe the first 25psi hit, maybe loosened a clamp or something. Say it wasn’t tight as could of been idk

I’m on phone sorry for format

go here.
https://cobbtuning.atlassian.net/wi...0/Ford+Mustang+EcoBoost+2015+-+2017+Map+Notes

Posting photo look at right, shows the map boost targets etc it’s not loading properly for me. But stage 3 notes should be there somewhere

 

[FreePenguin]

Map notes for all years, I posted the 15-17 notes above

https://cobbtuning.atlassian.net/wiki/spaces/PRS/pages/98417021/Ford+Mustang+EcoBoost+Map+Notes

I can’t find stage 3 anything... epa made them remove all the downpipe altered tunes if I had to guess,
stage 2 for 18+
24.5 psi tapering down

 

[CorvZ061]

On my motorcycles sportbikes, when you wot it, it completely disables the o2 sensors completely (edit, they aren’t physically turned off, and still reads data, but they don’t use the data read as any influence) .

They only come back in closed loop, wot circumvents the o2 entirely.
It says dump fuel, at this pedal position, etc other variables I’m sure. But Atleast on sportbikes, o2 is NOT a factor.

cars can be diff but I’m using my crossover knowledge

I feel the mustang is same way

Old s197 but evidently in open loop the o2 also is ignored. Open loop happens during warming up and wot.

closed loop/open loop

That may be the case on a sportbike and cars made 8+ years ago/not forced induction. I do know that the ecoboost uses a wideband o2 and monitors AFR at all times to make small corrections as needed, it has to because of being Direct Injected whereas S197 wasnt.

 

[Timmonsxp1]

Map notes for all years, I posted the 15-17 notes above

https://cobbtuning.atlassian.net/wiki/spaces/PRS/pages/98417021/Ford+Mustang+EcoBoost+Map+Notes

I can’t find stage 3 anything... epa made them remove all the downpipe altered tunes if I had to guess,
stage 2 for 18+
24.5 psi tapering down

I've seen this before as well. The AP will show the highest and the lowest numbers on the gauge. So if it peaks at 24.5 it would say that. But it doesn't it shows 20.5 so the peak is 20.5. which is 4lbs off.
I just think this tune isn't great for the EB. Especially since they took it down.

 

[FreePenguin]

I've seen this before as well. The AP will show the highest and the lowest numbers on the gauge. So if it peaks at 24.5 it would say that. But it doesn't it shows 20.5 so the peak is 20.5. which is 4lbs off.
I just think this tune isn't great for the EB. Especially since they took it down.

no. they've had stage 3 for years. its due to emissions, the day after the epa stuff happened with LUND etc, they ripped off stage 3, and updated Cobb with "new epa" compliant maps.

stage 3 is gone for good. due to altering emissions. everyone was frantically panicking, clearancing all the hatless downpipes, pulling tunes, they changed all the tunes to "epa" compliant, on mustang ecoboost.net they was all talking about it. people feel like the new version of the tunes are possibly weaker than the old ones due to emissions.

Cobb 3 maps disappeared when this patch happened.

here was the stage 1/2/3 comparisons., there was a stage 1/2/3 for all years, now all of them are gone. they are offering only 1/2 now. guess stage 3 is going to have to be a pro tune here on out. the big boys aren't risking epa knocking on their door after lund/dieselbrothers, etc all got sued.

 

[Timmonsxp1]

no. they've had stage 3 for years. its due to emissions, the day after the epa stuff happened with LUND etc, they ripped off stage 3, and updated Cobb with "new epa" compliant maps.

stage 3 is gone for good. due to altering emissions. everyone was frantically panicking, clearancing all the hatless downpipes, pulling tunes, they changed all the tunes to "epa" compliant, on mustang ecoboost.net they was all talking about it. people feel like the new version of the tunes are possibly weaker than the old ones due to emissions.

Cobb 3 maps disappeared when this patch happened.

here was the stage 1/2/3 comparisons., there was a stage 1/2/3 for all years, now all of them are gone. they are offering only 1/2 now. guess stage 3 is going to have to be a pro tune here on out. the big boys aren't risking epa knocking on their door after lund/dieselbrothers, etc all got sued.

I'm not surprised. I figured I would have to get it pro tuned. I was already looking for tuners near me on lunch. Lol

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