Copyright © 2005-2013 The text and pictures on this site are the sole property of their owners. They may not be reproduced without permission! Last modified: January 13, 2013 EVO IV Silencer We supply four short adapter pipes for a simple modification of your heat exchangers, or you can ship your HE's to us for modification. This 100% stainless steel muffler is made to work with the stock design heat exchangers, particularly with SSIs. It’s only a little louder than stock, yet has the flow characteristics of a straight through race muffler. The unique design fits the 914 body perfectly and weighs significantly less than the stock muffler. Midrange power is enhanced and the useful rpm range is extended all the way to the stock engine's mechanical rpm limit of at least 6000 rpm. It works equally well with either 1.7/1.8 liter or 2.0 liter Heat Exchangers, and is suitable for engines up to at least 2056 displacement and 140hp.  Requires minor modification of your heat exchangers for installation. Shipping is billed separately once we receive your order. Estimated shipping price from CT to anywhere in the continental US - not more than $75. Two video clips are available on youtube:
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A stealth version can be made if you don't want to alter your rear valence. Complete packages are available with SSI Heat Exchangers included.