c3 1.4 auto SX 0 Posted October 6, 2011 Share Posted October 6, 2011 I recently bought a ZX 1.4 Temptation. The exhaust was blowing when i got it and i was achieving between 40-45 MPG. I have now got the exhaust on and its dropped down to arounf 30-33 MPG. Why is this? Quote Link to post Share on other sites
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