I'd go with the computer as well.... others have claimed it to be accurate to .1 MPG... you'd have to check their method to see if the claims are valid or not but I suspect the computer is fairly accurate....
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'09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra // 
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