I have a 94 LT1 A4 with 2.73 gears. I have already added a K&N and flowmaster muffler. I need help deciding what my next mod will be. I'm either going to do the LT4 knock module, shift improvement module, air foil, and MAF all at the same time....or I will be swapping to 3.73 gears. Which path do you think I should take? Thanks.

 

You won't see any gains from anything except the gears.

You only need a KM if you think you're getting false knock. Airfoils are useless. Your stock MAF is fine. I'd go with a real shift kit and the gears if I were you.

 

by "did a K&N " you mean you changed only teh filter? if so, my guess would be to get a "true" "cold air kit". like the K&NFPK. something like that. the type where you remove all the stock plastic intake tubing and replace it with a better flowing one. from what i see on here, that and exhaust are great begginning mods for our cars. hth

 

cutout and headers or gears

 

From that list, ditch the first option and go with the gears. Gears and a torqe converter are the best difference makers. Night and day difference. Forget about the MAF, airfoil, and elbow. That's a scam from parts makers to get your money IMO. C' mon, 50$ for a small aluminum piece that cost a 2 bucks to make? Go with gears.

 

sorry i wasn't too clear. I have a K&N FIPK (not just the filter) and a Flowmaster 80 series muffler. I decided not to get a full catback because I love the stainless dual/dual exhaust tips I got from fasttoys.net. Alright, so now that I know I need some gears, how much improvement do you think I'll find with 3.73's vs 2.73's? 0.5seconds? How much is a fair price to pair for them installed? I've been quoted between $1200-$1400 from 3 separate shops. Sounds ridiculous.

 

Parts 300 (gears bearings, ect..)
Labor 500

 

.5 seconds is askin a lot from a 2.73 to a 3.73. I dont think that you will see that much of a gain...if you can actually put it down and get some good traction, you could probably see at best .4. After that go for the torque converter and a tranny cooler. Total difference...it will be incredible the difference you will feel. Also go with the transgo shift kit...you will need that with the torque converter. Trust me.

There is a guy near me in Palatine, Illinois that does gears for 600, that includes everything, purchase of gears and install. Now that is cheap!!!!

 

I paid 300$ for my gear install, but they whine. You'll like the gears though.