APR 93 from 91...Big difference?
#1
APR 93 from 91...Big difference?
I just looked at my paperwork and discovered that I've been running APR's 91 program. Last week I put on custom DP's and havent had a CEL or anything. I want to get the 93 program with the new software and am wondering if there will be a big difference with the 91 I'm running now and the 93. Any comments? Thanks.
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