Your numbers are just fine for a bone stock setup with an A4.

My stock 01 Z28 with 3.73's (5K miles) dynojet:

285RWHP/348RWTQ (because of rearend gear change)

Same vehicle with lid, catback custom Y pipe, Y3000 2.0 STR TC, 3.73's, free ram air (14K) mustang dyno:

293RWHP/360RWTQ

DON'T GET HUNG UP ON THE NUMBERS, the main thing is how does the vehicle run?, YOU DO NOT WIN RACES ON THE DYNO.

My vehicle runs like a scalded ape.

SteveC

 

My 2002 M6 did 299.7 hp and 317.4 ft lbs with a lid and filter at 5600 miles. If it lid is 10 hp or so (which is reasonable), then my M6 only did about 290 stock. It happens. My only 1/4 mile pass was an easy (granny shifting) 14.04@102.5 with a 2.6 60 foot (launched at 900 rpm).

 

I drove 2 hours up to get to TT Performance where I got my factory plugs (at around 46,300 miles) replaced with brand-new NGK-TR55's. (The factory plugs were labeled DENSO, for your information and they didn't look bad at all, IMO) Taylor Thunderbolts were not in stock so I just had them use my factory plug wires. After the spark plug installation, the car was placed on the dyno jet. The agreement was that the car will be dynoed with air/fuel ratio monitoring. KR and timing will also be checked. The operator was Matt Sorian. 3 pulls were done with the first two pulls done back to back and the last pull made after a 5 minute cool down. Here were the results.

1st pull: Max Power = 291.49 Max Torque = 313.94
2nd pull: Max Power = 288.28 Max Torque = 311.89
3rd pull: Max Power = 294.51 Max Torque = 314.05

Did my brand new spark plugs get me an increase of 9 rwhp and 12 ft-lb of torque? If I was a ricer, then I'd say yeah. But no, the dyno was properly made (for A4's) where EFILive was used to lock the converter at 3rd gear WOT to accurately show how much power the engine was actually making without accounting for stall. The air/fuel ratio was rich (at around 12.0-12.1). There was no KR detected and timing (I forgot the number that Matt said) was at the normal factory setting. So, now I am happy to know that there is nothing wrong with the car and that the best way to improve my baseline quarter mile times is to not run on a full tank of gas and to somehow go from 2.1-2.2 to 1.9-2.0 60 foot times. Thanks to Matt and the other guys at TT Performance. I'm getting all of my modifications and future dynos and dyno tuning done over there.