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Old 03-19-2010, 07:29 AM   #6 (permalink)
Matt
A True Z Fanatic
 
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Join Date: Oct 2009
Location: Augusta, GA
Age: 41
Posts: 1,680
Drives: 2010 Avalanche LT
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My engine sound/feel was like night and day above 5k (well, throughout the entire band, tbh) once I got new exhaust/HFCs. No words can express how much better it sounds and feels.

I have to say, my biggest disappointment was how coarse/rough the engine felt around 6k, right after break-in. I was so happy to get past break-in, only to be let down by the worry that my engine was about to explode.

If you plan on modding at all, make hfc/exhaust your first mods. Intakes aren't showing a lot of gains, from what I've seen, below the 6-7k RPM range, so it may not be the most "bang for buck" as a daily driver.

As far as being "slow", I think you'll notice the car seems to get a little quicker as you put the miles on it. It felt like I could floor it in 3rd gear and it wouldn't even respond. Now that I'm up around 3k miles (not much compared to other members), I think flooring it would put me into a ditch!
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