Kirby Lastinger
Full Access Member
I had the Corsa Extreme. It was obnoxious and had too much drone at highway speeds for my taste. Put the stock resonator back on and really like it now.
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I removed mine last week. It (0FG) was on the truck approx 3500 miles, of which 2200 were from a single 2-week road trip from Portland, OR to Orange County (south of). The system sounds great in many situations, and is particularly good for people hearing it *outside* the truck. However, there are two main instances where it is just too intrusive for my liking:
1) Low speed conditions with the engine under load. For example, 30mph in gears 8-10 on a hill. It's super loud in the cabin; not drone ... just very pronounced. It's hard to have a conversation. And since I live in a hilly area, where this type of driving is a daily occurrence, it was annoying.
2) Freeway cruising speeds over 74 mph. There's a sweet spot with this exhaust between 1500 and 1900 RPMs ... anything lower, it sounds like what I describe above, and anything higher (at steady pace) is just too loud. Again, it isn't drone, it's just loud. At 75mp my truck creeps to 2000 RPM, and meant I had to stay below 75 or endure the loudness ... for 1100 miles each way. I have several road trips like that this year, and there was no way I was going to deal with that noise.
Note also, I added Vibrant Resonators at about 1200 miles ... well after the break-in period. They helped around town driving, settling it quite a bit without totally squelching the sounds that are good. But they couldn't contain the noise at freeway speeds.
After going back to stock, the drive home (including freeway) was like I'd gone from a noisy, old school rig to a Lexus ... it was so much quieter. Ford has done an outstanding job with the factory exhaust tuning and noise control, without killing the sound. There's just no making the Ecoboost 3.5TT sound "better", so it might as well be comfortably quiet.
Oh man,...I’m about to install a 1fg,...I’ll be sure to keep my stocker. Just in case