Air Box Modifications
#16
Instructor
Join Date: Apr 2002
Location: North West UK
Posts: 107
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![Smile](https://rennlist.com/forums/images/icons/icon7.gif)
Couldn't agree more - I have a 'holy' airbox cover & the noise under load is delicious! You just find yourself blipping down the gears more and more to savour it upon accelerating again!
Nick
1990 C4 <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />
Nick
1990 C4 <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />
#17
Instructor
Join Date: Jul 2002
Location: Olympia, Washington
Posts: 189
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![Talking](https://rennlist.com/forums/images/icons/icon10.gif)
Converted my drilled airbox today to a cutout version (thanks to Jon's inspiration when comparing his C2 with my C4.) I don't have his bypass pipe, but the cut version gives more growl over a larger RPM spread. Here's a pic during the cutout process (also showing my simple jigsaw with fine-tooth blade)...
![](http://boards.rennlist.com/upload/during000.jpg)
And here is the finished product...
![](http://boards.rennlist.com/upload/after000.jpg)
Come on! Cut out those holes and loose the trumpet!
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
![](http://boards.rennlist.com/upload/during000.jpg)
And here is the finished product...
![](http://boards.rennlist.com/upload/after000.jpg)
Come on! Cut out those holes and loose the trumpet!
<img src="graemlins/burnout.gif" border="0" alt="[burnout]" />