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Kaotic Lazagna · 08-13-2015, 09:40 AM

A (proper) rear diffuser may increase downforce and help with mpg, but like others have said, under normal speeds, you probably won't see either.

08-13-2015, 09:40 AM	#10
Kaotic Lazagna Senior Member Join Date: Apr 2014 Drives: GR Corolla Location: Lathrop, CA Posts: 4,926 Thanks: 3,087 Thanked 3,017 Times in 1,859 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	A (proper) rear diffuser may increase downforce and help with mpg, but like others have said, under normal speeds, you probably won't see either.