3:73s or 4:11s?
Thread Starter
TECH Addict
Joined: Feb 2002
Posts: 2,319
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From: Lewisville, Texas
3:73s or 4:11s? I have a 99T/A A4 H/C with all the bolt ons, I trashed the stock 10 bolt again so I am going to order a Moser 12 bolt. The 10 bolt had 3:73s in it but I am thinking about going with 4:11s in the 12 bolt. The car is my daily driver, I only drive 25 miles a day so I don't really care about gas mileage. I know most M6 guys go with 4:11s and the A4 guys go with 3:73s. My tuning was done by Ed Wright and I know I'll have to send the PCM back to Ed to adjust for the 4:11s but is there any reason other than gas mileage and tuning not to use 4:11s in an A4 with a 12 bolt? TIA,
Mark
<small>[ November 24, 2002, 09:33 AM: Message edited by: Elite_Hot_Rod ]</small>
Mark
<small>[ November 24, 2002, 09:33 AM: Message edited by: Elite_Hot_Rod ]</small>
Re: 3:73s or 4:11s? 4.10s are slightly faster (a few hundredths), especially if you run larger than stock tires at the track. The highway rpms get annoying if your 25 mpd are at 70 mph. I believe 3.90s are available if you want to split the difference.
