2018 Active Exhaust Install Guide

[VonWatchmaker]

Hey everyone!
I've been following this thread for quite a while and the time came to use the knowledge and install Active Exhaust on my Mustang

I have a Mustang GT 2019 A10 401A PP1 S&S. The car according to the window sticker is a 2019, but according to Carfax it was manufactured on the 12/30/2018.

I do have the fuse (34) and the Exhaust valves relay (59) and also the plug on the rear.

I bought a whole OEM exhaust together with the wires and installed everything.

Now to Forscan
Originally I had the following IPC values:
720-04-01: 0611 0002 0045 (4 = Enabled 6 = Disabled DB252's Findings)
720-10-01: 1000 0000 0048 (E = Enabled C = Disabled Both must be set for Active Exhaust enabled/disabled) NOTE: I had a 1 there

I swapped the values to:
720-04-01: 0411 0002 0045
720-10-01: E000 0000 0048

And I got the Active Exhaust in the menu on the Digital 401A cluster (yeey! right?). But this is it... The actuators do not move at all, no matter what option I select in the cluster and I get no errors what so ever.

I will be debugging this problem and if I will find a solution, I will let you know But if there is someone out there who knows what am I missing (I hope not the special tune) please let me know.

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[Mach VII]

Hey everyone!
I've been following this thread for quite a while and the time came to use the knowledge and install Active Exhaust on my Mustang

I have a Mustang GT 2019 A10 401A PP1 S&S. The car according to the window sticker is a 2019, but according to Carfax it was manufactured on the 12/30/2018.

I do have the fuse (34) and the Exhaust valves relay (59) and also the plug on the rear.

I bought a whole OEM exhaust together with the wires and installed everything.

Now to Forscan
Originally I had the following IPC values:
720-04-01: 0611 0002 0045 (4 = Enabled 6 = Disabled DB252's Findings)
720-10-01: 1000 0000 0048 (E = Enabled C = Disabled Both must be set for Active Exhaust enabled/disabled) NOTE: I had a 1 there

I swapped the values to:
720-04-01: 0411 0002 0045
720-10-01: E000 0000 0048

And I got the Active Exhaust in the menu on the Digital 401A cluster (yeey! right?). But this is it... The actuators do not move at all, no matter what option I select in the cluster and I get no errors what so ever.

I will be debugging this problem and if I will find a solution, I will let you know But if there is someone out there who knows what am I missing (I hope not the special tune) please let me know.

You have to activate the feature in the PCM for it to work, only the 2018's came with it 'On' from the factory when not installed as an option... Your choices are to fabricate your own controller, pay for a 'tune' from PBD or Lund and ask for the feature to be activated or buy a HP Tuners device and do it yourself.

 

[jmeiers]

I will be debugging this problem and if I will find a solution, I will let you know But if there is someone out there who knows what am I missing (I hope not the special tune) please let me know.

As Mach VII showed, you forgot the tune. I believe it is a 2019 and up only thing and actual 2018 model years can get away without the tune. Not a big deal, I had to do it myself on my nearly identical optioned 2019. I already had a PBD E85 tune at the time, so I just simply asked them to switch the Active Exhaust on in the tune and it all worked perfectly.

 

[VonWatchmaker]

Thank you for the answers If I will not manage to do it on my own, I will take your advice for sure.
I am wondering. Now that Forscan 2.4.x has a new functionality of programming modules in our Fords, do you guys think that maybe I could just find a calibration from a 2019 GT with the active exhaust and simply flash is instead of what I have?

In the PCM I have now:

Can anyone with a 2019 GT with an OEM active exhaust check theirs please?

 

[ghostang]

Hey man I finally found the right connector to make the harness for people with out the plug. With in the next month or so I should have the first harness ready for me.

Please share the part numbers.

 

[VonWatchmaker]

Please share the part numbers.

JR3Z-14A411-J - The black Y harness:
1x 33472-1557 12pin - 6 wires
2x 33471-0401 4pin - 4 wires


JR3Z-14A411-H - The silver harness going to the actuator:
1x 33481-0401 4pin - 4 wires
1x <something I can't quite read, see the attached pictures> 4pin - 4 wires

 

[jsaild1]

I may have missed it -

But has anyone on here whose car *does* have the plug, but their car *doesn't* have the relay or fuse (nor contacts in the fuse box) been successful in wiring up active exhaust with OEM functionality?

If so, what all was involved to do this? Any help is appreciated!

 

[andrewtac]

2020 gt 400a. I don't have the plug under the car, however under the spare there is a plug that goes to the evap system that has numerous wires terminating in. The colors match except the gray with an orange stripe. I looked at the c246 plug under the kick panel and the female side had the same colors listed in this thread except wires on pin 2 and 3 were switched, and again the gray was with an orange stripe. I am Ok doing it with the hard wired switch, but much rather do it integrated. Is there a chance they reversed wires in 2020 (late 2020 build, almost 21). Also, I think the wires in the trunk are the same. Without wiring it all up is there a way to check these are the wires.

1st photo is c264, you can see gray with brown, 2 and 3 are trunk plug.

 

[andrewtac]

Done! I found some local that had the JR3Z14A411H harness still attached, which was great as those are on order everywhere. The J harness was available but I wired without it, like everything else I couldn't wait. The bottom picture above is the plug in the back of the trunk that the evap lines go to. The AE stuff terminated into that plug, so I used wire splices to tap into that loom, then some bullet fittings to plug into. I also used taps in the J harnesses coming off the mufflers; so sort of made a harness in place of the J harness. I got an updated tune from LUND, loaded that, then went into forscan and into the IPC, filtered by exhaust, then I activated tuneable exhaust; and it works. I started at 730pm, and was done by 1100pm. This included having to cut the resonator off to fit into my current exhaust, mount it, then do all the wiring, and loading the tune and IPC. It wasn't bad, excited to drive it tomorrow.

One thing I will add, when I asked my exhaust guy about getting me some takeoffs he highly recommended against doing this. He said he has seen many cars at the strip throw codes as on the launch the exhaust moves back and the wires crimp or scrape on the back on the car. When I was mounting the exhaust it was obvious where there could be interference. I used a BFH to motivate the offending pieces of metal to get out of the way, should not have an issue now as I have plenty of clearance. Unless you are under the car, with the exhaust off you'd never know I did this; so don't be scared.

 

[peprika55]

Hey there

Doing the conversion on my 19’ GT to AE, got all the parts and stuff and I have been having trouble getting it to work. Forscan doesn’t let me modify 720-10 to enable the feature however there was a different menu with the IPC labeled as tunable exhaust and upon enabling it brought the exhaust screen to my dash (non digital). Still no movement from the actuators. I live in northern VA if there’s a tunning shop or whatever that can help enable this would be greatly appreciated. However I did I see that you have to buy a tuner to get this to work, I would want to avoid that if I could

 

[jmeiers]

Hey there

Doing the conversion on my 19’ GT to AE, got all the parts and stuff and I have been having trouble getting it to work. Forscan doesn’t let me modify 720-10 to enable the feature however there was a different menu with the IPC labeled as tunable exhaust and upon enabling it brought the exhaust screen to my dash (non digital). Still no movement from the actuators. I live in northern VA if there’s a tunning shop or whatever that can help enable this would be greatly appreciated. However I did I see that you have to buy a tuner to get this to work, I would want to avoid that if I could

You absolutely have to get your tune modified on a 2019-up! Even if you are leaving all other settings stock, AE has to be enabled in your tune for it to function, in addition to the Forscan codes.

I live in Northern VA also and E85 is easily obtainable. Get your car tuned on E85 and have them enable the AE in the tune.

 

[VonWatchmaker]

Hey eveyone, my theory worked! You can enable Active Exhaust by only using Forscan in the 2019 Mustang

For those who do not know how to start, just check comment #676.
If you are on a Mustang 2018, everyting should work right out of the box, but if you have a later year model, you need to continue reading.

Now comes the part that could potentially brick your PCM.
After checking over 100 As-Builts from US Mustangs with and without Active Exhaust, I found the following:

Mustang packages:	PCM Calibration / Strategy
2019 GT M6 no-AE	KR3A-14C204-ACF
2019 GT M6 AE	KR3A-14C204-YF
2019 GT M6 PP1 no-AE	KR3A-14C204-ACF
2019 GT M6 PP1 AE	KR3A-14C204-ZF
2019 GT M6 PP2 no-AE	KR3A-14C204-ACF
2019 GT M6 PP2 AE	KR3A-14C204-ZG
2019 GT A10 no-AE	KR3A-14C204-BJE | KR3A-14C204-BJF
2019 GT A10 AE	KR3A-14C204-BFE
2019 GT A10 PP1 no-AE	KR3A-14C204-BKE | KR3A-14C204-BKF
2019 GT A10 PP1 AE	KR3A-14C204-BGE | KR3A-14C204-BGF
2019 Bullit	KR3A-14C204-XG
2019 EB M6 Perf AE	KR3A-14C204-BBD

So, I flashed on my 2019 GT A10 PP1 no-AE (KR3A-14C204-BKE) with a calibration from a 2019 GT A10 PP1 AE (KR3A-14C204-BKE) and it worked!

I know that it can be done by VCM2, UCDS and Forscan 2.4.x beta.
The files needed to flash can be found here: fordtechservice

 

[peprika55]

I’m reporting in here, I’ve done that calibration in a 19’ GT with a pp1 and it works without a tuner!

 

[Vlad Soare]

Hey eveyone, my theory worked! You can enable Active Exhaust by only using Forscan in the 2019 Mustang

For those who do not know how to start, just check comment #676.
If you are on a Mustang 2018, everyting should work right out of the box, but if you have a later year model, you need to continue reading.

Now comes the part that could potentially brick your PCM.
After checking over 100 As-Builts from US Mustangs with and without Active Exhaust, I found the following:

Mustang packages:	PCM Calibration / Strategy
2019 GT M6 no-AE	KR3A-14C204-ACF
2019 GT M6 AE	KR3A-14C204-YF
2019 GT M6 PP1 no-AE	KR3A-14C204-ACF
2019 GT M6 PP1 AE	KR3A-14C204-ZF
2019 GT M6 PP2 no-AE	KR3A-14C204-ACF
2019 GT M6 PP2 AE	KR3A-14C204-ZG
2019 GT A10 no-AE	KR3A-14C204-BJE | KR3A-14C204-BJF
2019 GT A10 AE	KR3A-14C204-BFE
2019 GT A10 PP1 no-AE	KR3A-14C204-BKE | KR3A-14C204-BKF
2019 GT A10 PP1 AE	KR3A-14C204-BGE | KR3A-14C204-BGF
2019 Bullit	KR3A-14C204-XG
2019 EB M6 Perf AE	KR3A-14C204-BBD

So, I flashed on my 2019 GT A10 PP1 no-AE (KR3A-14C204-BKE) with a calibration from a 2019 GT A10 PP1 AE (KR3A-14C204-BKE) and it worked!

I know that it can be done by VCM2, UCDS and Forscan 2.4.x beta.
The files needed to flash can be found here: fordtechservice

Michal, do you happen to know the calibration numbers for 2020 GTs as well?
Mine is a 2020 European GT with M6 and AE, and has the calibration no. LR3A-14C204-ACC. I'm curious whether US vehicles of the same year have the same calibration. There seems to be a difference in how mine responds to changes in the tune, versus how US vehicles do, and I'd like to find out what's causing it.

 

[VonWatchmaker]

Michal, do you happen to know the calibration numbers for 2020 GTs as well?
Mine is a 2020 European GT with M6 and AE, and has the calibration no. LR3A-14C204-ACC. I'm curious whether US vehicles of the same year have the same calibration. There seems to be a difference in how mine responds to changes in the tune, versus how US vehicles do, and I'd like to find out what's causing it.

They shouldn't have the same calibration, because the EU Mustangs have different power output than the US counterparts. Ford does it to make sure the emissions stay within European Union limits.

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