In January I dyno'd with the car stock.

It's a 96 Formula, A4. Had 2.73s at the time.
238 HP/ 275.3 TQ

Yesterday (July 26) I dyno'd after:
160* Thermostat, SLP CAI, Magnaflow catback, 3.42s.
264 HP/ 289.9 TQ

I wouldn't think the gears to give me any horsepower, just let it make it quicker because the motor spins up a little quicker.

So the thermostat, cold air and catback netted me 26 RWHP and 14.6 RWTQ.

I was a tad lean from 3800-4800 RPM, so I was told that there's probably a couple more in it.

Makes me really want to get some headers!!!

 

Looking at your first numbers,pretty low. Now you are about right.Yes,get some headers.Then you will want heads and cam. Its never ending fun making it faster.

 

Low? Most of the A4 cars that I've seen numbers for when stock show right around 240... So I don't see that I was too low.

I already have another set of heads on the shelf waiting for springs, rockers, studs, and port work...

 

numbers look on par