POWER OF ATTORNEY
KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes 
and appoints each of Eva Davis, Kara Beal, Luke Guerra, Thomas Costales and Sowmya Rajan, 
signing singly, the undersigned's true and lawful attorney-in-fact to:  (i) execute for and on behalf 
of the undersigned, in the undersigned's capacity as a director of IMPCO Technologies, Inc., a 
Delaware corporation or as a director of Fuel Systems Solutions, Inc., a Delaware corporation 
(together being the "Companies"), Forms 3, 4, and 5 in accordance with Section 16(a) of the 
Securities Exchange Act of 1934 and the rules thereunder; (ii) do and perform any and all acts for 
and on behalf of the undersigned which may be necessary or desirable to complete and execute 
any such Form 3, 4, or 5 and timely file such form with the United States Securities and 
Exchange Commission and any stock exchange or similar authority, including the NASDAQ 
Global Market; and (iii) take any other action of any t
ype whatsoever in connection with the 
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest 
of, or legally required by, the undersigned, it being understood that the documents executed by 
such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in 
such form and shall contain such terms and conditions as such attorney-in-fact may approve in 
such attorney-in-fact's discretion.
The undersigned hereby grants to each such attorney-in-fact full power and 
authority to do and perform any and every act and thing whatsoever requisite, necessary, or 
proper to be done in the exercise of any of the rights and powers herein granted, as fully to all 
intents and purposes as the undersigned might or could do if personally present, with full power 
of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact's 
substitute or substitutes, shall lawfully do or cause to be 
done by virtue of this power of attorney 
and the rights and powers herein granted.  The undersigned acknowledges that the foregoing 
attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, 
nor are the Companies assuming, any of the undersigned's responsibilities to comply with 
Section 16 of the Securities Exchange Act of 1934.
This Power of Attorney shall remain in full force and effect until the undersigned 
is no longer required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and 
transactions in securities issued by the Companies, unless earlier revoked by the undersigned in a 
signed writing delivered to the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to 
be executed as of this July 20, 2006.
/s/ Douglas R. King
Douglas R. King