[weinerj100]

Dealer performed the manual exhaust mod for me today free of charge. Let the loud begin. ForzaSteve, I'll be in touch if it seems like too much all the time. I don't think so, but we'll see...

 

[forzasteve]

Dealer performed the manual exhaust mod for me today free of charge. Let the loud begin. ForzaSteve, I'll be in touch if it seems like too much all the time. I don't think so, but we'll see...

Enjoy. BTW, you do know that a loud exhaust will reduce fuel economy. Something about that wonderful sound makes your right foot press harder on the accelerator pedal. :smile2: I’m sure that a medical term for that condition exists.

Steve

 

[QVRossoCompetizione]

When I bought the car (4 months ago) I asked the garage to do the modification so as to have the valves open by all modes.


This was done and all is fine. What I still find is that the noise of the engine is a little louder in RACE mode than in DYNAMIC.


Any idea for this?

 

[forzasteve]

When I bought the car (4 months ago) I asked the garage to do the modification so as to have the valves open by all modes.


This was done and all is fine. What I still find is that the noise of the engine is a little louder in RACE mode than in DYNAMIC.


Any idea for this?

If the bypass valves are fully open in both dynamic and race mode, any difference would have to be in the engine management system ... e.g., turbo boost pressure (I don’t know if that varies between the two modes) or perhaps valve timing. Maybe someone here with better knowledge than I may have an hypothesis.

Steve

 

[maddmike]

When I bought the car (4 months ago) I asked the garage to do the modification so as to have the valves open by all modes.


This was done and all is fine. What I still find is that the noise of the engine is a little louder in RACE mode than in DYNAMIC.


Any idea for this?

Yes, the engine dynamics and shifting dynamics change. I believe the N mode actually has less than full power but for sure the gears are held longer and the throttle is much lazier. In D and Race it turns it up a notch and you get the popping and over-revs etc.

 

[Racer Z]

When I bought the car (4 months ago) I asked the garage to do the modification so as to have the valves open by all modes.


This was done and all is fine. What I still find is that the noise of the engine is a little louder in RACE mode than in DYNAMIC.


Any idea for this?

Just a guesstimate on my part here. I doubt if the valving mentioned is any different between Race and Dynamic, so,.. the exhaust volume is based on the power being created. This suggests that
a) you're giving it more gas in R mode
b) the car has a more aggressive tune in R mode
c) both a & b

 

[Supratmaki]

The Forza Mod is amazing. I thought about doing the vacuum line mod myself but it’s great having the ability to just press a button and go closed to open. Also sometimes you just want to drive without the droning sound of exhaust. Also here is a video I made of the install, maybe it might help someone.

https://youtu.be/R0i0RBdkOaE

 

[jordantii]

So, I did this mod as well. Huge difference. Not sure I will keep it and may go with the controller in the futuire. With my install I added extra hose so I could position the valves for easy access trough the diffuser.

I swear this car sounds like it shoots flames on up shift over run!

 

[weinerj100]

The other thing about the manual exhaust mod is that the flaps are open upon ignition. Cold start-ups are now literally an event. My wife thinks it's "more than slightly obnoxious," but she'll get over it...

 

[beaups]

When I bought the car (4 months ago) I asked the garage to do the modification so as to have the valves open by all modes.


This was done and all is fine. What I still find is that the noise of the engine is a little louder in RACE mode than in DYNAMIC.


Any idea for this?

Cylinder deactivation.

 

[545_days]

I can't help but wonder where the other end of that vacuum line is. Vacuum has to come from the engine, and a valve located under the hood would be far more easily opened or shut than one located under the car.

Does anyone know?

 

[beaups]

I can't help but wonder where the other end of that vacuum line is. Vacuum has to come from the engine, and a valve located under the hood would be far more easily opened or shut than one located under the car.

Does anyone know?

I might be imagining it, but I vaguely remember reading somewhere that if you kill the vacuum prior to the controller, the controller will recognize lack of vacuum and throw a CEL. I also vaguely remember reading you'll get a CEL also if you disconnect the controller.

It's 10-15 minutes per side to do this mod, don't even need to lift the car or remove the wheels if you're flexible.

--beaups

 

[forzasteve]

You can install an exhaust controller and then easily toggle between normal operation and always open.

But, if you want easy access to a manual set up, then find the vacuum solenoid valve which is behind the rear bumper. It looks like the first illustration that is attached ...

Then get some vacuum line (best to get line that is heat resistant ... I would recommend silicone high temp vacuum line). Go to Home Depot or somewhere where you can get some drip irrigation fittings:

• Two in-line couplings (1/4")
• Two barbed On/Off Valves (1/4 ")
• One barbed Tee connector (1/4 ")

Then make the connections as shown in the second attachment. Place the On/Off valves up inside your trunk where you can easily access them when you want to make a change. Make sure to label the two valves so you know the settings. You open one and close the other depending on which mode of operation you want to achieve.

Regards,

Steve

 

[Krieger0311]

Sorry if it's been asked but didn't feel ike reading through 28 pages. I am looking at buying the Model E3 controller. Other than maybe some reductions in fuel economy (HA!) is there any negative effect over time this would have on the vehicle? Also, possibly more importantly: will it void any warranties? I emailed my service department to ask and to ask about having them install it but can't get a reply. I have a 2019 Giulia Quadrifoglio

 

[maddmike]

Sorry if it's been asked but didn't feel ike reading through 28 pages. I am looking at buying the Model E3 controller. Other than maybe some reductions in fuel economy (HA!) is there any negative effect over time this would have on the vehicle? Also, possibly more importantly: will it void any warranties? I emailed my service department to ask and to ask about having them install it but can't get a reply. I have a 2019 Giulia Quadrifoglio

No, there should not be any effect on your warranty unless you cut a wiring harness or something. There are zero effects on fuel economy except if you push the go pedal more. There are no other effects to the vehicle.


However, $10 in parts will get your flaps open all the time and have one less electrical thing-a-ma-bob in your cockpit for you to fiddle with.

 

[forzasteve]

Sorry if it's been asked but didn't feel ike reading through 28 pages. I am looking at buying the Model E3 controller. Other than maybe some reductions in fuel economy (HA!) is there any negative effect over time this would have on the vehicle? Also, possibly more importantly: will it void any warranties? I emailed my service department to ask and to ask about having them install it but can't get a reply. I have a 2019 Giulia Quadrifoglio

There is no negative effect. As stated by another, any reduction in fuel economy is likely because you are pressing harder on the accelerator pedal to hear the louder exhaust

Several Alfa dealers are installing the controller for their clients. As you are not making any change to car, e.g., cutting wires, using the controller will not void the car’s warranty.



Regards

Steve

 

[Sal Scotto]

best investment get the controller.!!!!!!!!!!!!!my dealer put it in for 100 dollars. no worries and you can use extra buttons in homelink garage controller. thanks again steve

 

[Racer Z]

I can't help but wonder where the other end of that vacuum line is. Vacuum has to come from the engine, and a valve located under the hood would be far more easily opened or shut than one located under the car.

Does anyone know?

Is it possible that the vacuum line feeds other things along it's journey? Identifying the vacuum line in the engine bay could be difficult, I bet there's more than one vacuum line to choose from. Plugging it at the end it by far the safest.

 

[545_days]

Racer Z,
It is very possible, hence my question. I was unable to come up with a vacuum diagram, and have not sprung for the Techauthority discs.

I'm thinking I might go with Forzasteve's method, as it appears to offer reasonably decent access while still being reversible.

 

[DawsonGQ]

Hi, performed the manual exhaust mod to open flaps for a few weeks and put it back to factory due to very bad MPG. I could not get above 16 mpg with this mod in A, N, D, as well as Race setting. I've even babied the way I drive during open flaps to get an increase in MPG with no luck.

When I put it back to flaps open/closed ECU control in all DNA setting except D and Race car went back to over 20+ mpg. I need my fuel saving since I drive a lot and most is highway in Miami, FL. Seems we need an ECU tune to fix this problem with wide open exhaust flaps. RACE is set up for the flaps open always, ECU matches exhaust flow.

Anyone with the manual exhaust mod or Forza E3 open flap always mode getting better than 17 MPG? Anyone getting over 20 MPG?

What is your Alfa's average MPG?

Thanks