I installed this today and am pleased with the results. It's not a night and day improvement, but noticable. I bought my 2005 sedan about a month ago. The air filter was extremely dirty and after about a week of driving it, I put in a K&N panel filter. The improvement there was very gratifying because I was a little disappointed in the top end of the RPM range. After the filter change, the engine lost the slight vibration at high RPMs that I attributed to oxygen starvation. Not to say that the K&N is really any better than stock, but it better than dirty stock...

After installing the plenum spacer, there was more of the same effect. Even smoother at high RPM. The sound difference is slight, less than I expected after reading the reviews of installing spacers. Wheras the filter change really only made a difference up top, the plenum spacer seems to give a little more power the through the whole RPM range, albiet more heavily weighted up high.

Install time was about an hour.

 

Good write up!

 

Hello,

Good write-up. PowerLab = quality

Darren