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SVT Performance (2002-2004) The place to chat about any 2.0L SVT DOHC Zetec engine performance, tuning and exhaust related upgrades.

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Old 12-19-2011, 08:54 PM   #11
Joshuasvt
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Join Date: Aug 2005
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Location: Seattle, WA
What I Drive: '03 Black/Red Flake SVT #1218

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Quote:
Originally Posted by J-BONE View Post
I put the SP463's gaped to .060 and Taylor wires in my focus and have had a loss in MPG and it takes longer for the idle to smooth out with a cold start up. If i dont let it warm up the engine revs up in between 3-4k when i press in the clutch to shift to taller gears, this lasts till the car is up to Temp and then goes away. Any thoughts?
Mine does the exact same thing. I thought it was because I had an older tune so I got with Tom and he worked with me over email and we were able to update my tune. I was still getting around 17 mph. Then I put in the platinum plugs and mpg shot up to around 22. The copper core plugs seem to smooth the car out a LOT, but the platinum mosdef get better gas mileage. I don't have an air/fuel gauge so I really cant tell whats going on in there. Tom did mention that my air intake sensor was reading abnormally high temps, but I have switched to a volant Cai since
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