This Is How You Keep Alfa Romeo Giulia Quadrifoglio’s Angry Exhaust Always Open

The Alfa Romeo Giulia Quadrifoglio is one of the best sport saloons in the market right now, offering sharp handling matched with a twin-turbo Ferrari-derived V6 that offers plenty of power and a great soundtrack.

The 2.9-liter V6 produces 505hp and 443lb-ft of torque, making the Giulia Quadrifoglio one of the most powerful cars in a segment that includes the BMW M3 and the Mercedes-AMG C63.

The only issue is that Alfa Romeo won’t let you open the exhaust taps unless you select the Race mode, which also firms up the dampers, sharpens the throttle response and disengages the traction and stability control. Not ideal if you just want to listen at the angry V6 on your daily drive.

As it turns up, there’s a solution to this very first-world problem: you can just install an exhaust bypass valve controller and then you can open the exhaust whenever you want and without making the electronic nannies go to sleep.

Moreover, the process of installing a controller of this kind doesn’t require you to be a wrenching guru, as shown by Albo in the video linked below; a basic understanding of what’s going on will do. Surely preferable than replacing the whole thing with an aftermarket exhaust system, isn’t it?

Having an Alfa Romeo that can do a 0-62mph in 3.9 seconds isn’t enough as sports cars have to be not just fast these days, but stimulate the driver with a proper exhaust note as well. The Giulia Quadrifoglio certainly delivers on that last part, but with the bypass valve controller installed, it delivers all the time.

  • kraigrichard

    Fugly car…. So Vanilla! They should have an app for their ferrari that has its sound system playing the exhaust and they can listen for real inside their cabin. BTW….Straight pipe on a panhead is much more melodious.

  • SPQR

    I don’t get it. If you have to push a button to open the exhaust, why not leave the car as is and just go into race mode. Seems like the classic “solution in search of a problem.” I’d also have to guess a modification like this voids the warranty.

    (Kraifichard I have the feeling you think the Pontiac Aztec was a gorgeous car).

    • Bob

      Hey, I think it’s mostly because Race mode disengages the nannies. This is just a way to open the exhaust without all the excitement of going sideways into a tree and dying.

    • Vassilis

      The article explains why…


    OMG what a car

  • Six_Tymes

    love the car, but making any car too loud and obnoxious is getting old

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