With the stillen kit my mpg was around 14. I can't comment on the gtm kit yet. Since I have only filled up a few times. I would say if you are going to choose a kit get go with gtm. They are worlds apart
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GTM Supercharger/HKS Camp2/Berk cbe/Motordyne art pipes/Hotchkis sways/ Eibach Springs/ Black Volk TE37/Bridgestone S-04
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Last edited by tomnavone; 02-25-2011 at 12:31 AM.
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