1 EXHIBIT 11.1 MOTORVAC TECHNOLOGIES, INC. CALCULATION OF NET INCOME (LOSS) PER SHARE FOR THE THREE MONTHS AND THE SIX MONTHS ENDED JUNE 30, 1997 AND JUNE 30, 1996 THREE MONTHS ENDED SIX MONTHS ENDED --------------------- --------------------- JUNE 30, JUNE 30, JUNE 30, JUNE 30, 1997 1996 1997 1996 --------- --------- --------- --------- Net Income (Loss) 196,239 (317,407) 340,042 (809,404) ========= ========= ========= ========= Weighted Average Outstanding Common and Common Equivalent shares: Common Stock Outstanding, December 31, 1996, December 31, 1995 4,514,918 948,000 4,514,918 948,000 Common stock equivalents: Conversion of Series A Preferred Stock 966,247 966,247 Conversion of Series B Preferred Stock 570,150 570,150 Common Shares Issued in Initial Public Offering 1,100,000 1,100,000 Weighting of Initial Public Offering 809,890 404,945 Conversion of $4,410,300 of Notes Payable to Related party 820,521 820,521 Common Stock issued in Overallotment on June 15, 1996 110,000 110,000 Weighting of overallotment option (15 days) 18,132 9,066 --------- --------- --------- --------- 4,514,918 4,132,940 4,514,918 3,718,929 Incremental shares, assuming exercise of options grants outstanding at June 30, 1996 and June 30, 1997 (eliminated if dilutive to EPS) 0 11,624 0 4,294 Weighted Average Outstanding Common and Common Equivalent Shares 4,514,918 4,144,564 4,514,918 3,723,223 ========= ========= ========= ========= Net Income (Loss) per Share $ 0.04 $ (0.08) $ 0.08 $ (0.22) ========= ========= ========= =========