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Old 03-16-2010, 12:02 PM   #281 (permalink)
370Zsteve
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Join Date: Sep 2009
Location: Gold Coast CT
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Drives: 2019 Corvette G.S.
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Quote:
Originally Posted by Matt View Post
In the few days I've driven since installing the BERK exhaust, I have to say, the butt dyno approves! It feels incredibly more responsive, especially in the 3-6k RPM range. I would be surprised if the BERK CBE/HFC combo hasn't added 30-40 whp.

And I have to say it again, the "harshness" of 6.5K+ in this engine is all but gone with this exhaust. I'm sure it's still "there", but I no longer can feel/hear it. All I hear at 6.5k RPM is magic.
I completely agree with the above statements, especially comments about the 3-6k rpm range and the apparent lack of harshness above 6.5K. I can't explain that. Engine feels like it's running a lightened pulley or something now, weird. Just seems to rev more freely. VVEL FTW!

One other thing I immediately noticed. The mechanical sounds of the engine sound better, especially with a throttle blip from idle. Also weird, but I like it. And this I can explain...with a less restrictive exhaust, the loudest noise now comes from the tailpipes; with the OEM exhaust it seemed like the noise was emanating from the resonators, almost from underneath the vehicle. Less noise in the cabin when cruising!
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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.
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