2K miles on the clock, only mod is a Halltech Stinger. Dynoed yesterday on the Mustang dyno at Performance Specialties Inc in Glen Burnie, MD. All pulls with traction control and active handling off.

The first pull was done in 3rd gear, rationale being that w/ stock gears, in a quarter mile race you spend almost no time in fourth gear. Results were 329 HP, 313 TQ.

Second pull, 337 HP, 329 TQ in 4th gear. I stopped the pull at 6K RPMs, but the operator actually shut it down at 5900. The HP curve was still going up, so I think there's a few more ponies that weren't shown. TQ curve was extremely flat, w/ 300 at only 2400 RPMs all the way through 5800 RPMs. A/F was 12.4:1 or so through 4400 RPMs, then dipped to around 11.5:1 for the rest of the pull. This was true on both pulls. There may have been some cat overtemp going on, w/ the computer adding fuel to cool things down.

Also did a simulated 1/4 mile pull through the gears, which the Mustang dyno is capable of doing. This particular dyno has been well calibrated against actual track results from quite a few of their cars, and has proven to be an accurate predictor of results at the track. Result was a 12.5 second pass. However, the car weight was incorrectly entered as 3100 pounds, should have been more like 3400 pounds w/ driver. So the results are probably three tenths off. Still, I didn't expect a corrected 12.8 pass.

I wasn't overly concerned about the actual results, treating it more as a baseline for future testing. I'll probably do another pull at 5K+ miles for comparison, before any mods or tuning. Then the real fun can begin.

 

Peak HP/TQ usually occurs just at 5252 RPM's give or take. Running past that will only show progressive decreases in power. So there's no real reason to run much past 6K. The car isn't going to make any more power at those RPM's.

The A6 is a funny animal and is causing confusion in trying to compare dyno results between the A4 and M6 cars. As long as you are using the dyno results to compare before and after power gains from mods you'll be fine. But start trying to compare outside the breed will be difficult to make sense of the numbers.

FYI my 2006 M6 coupe with just a B&B exhaust and 1600 miles showed just at 347.


I have since added a Halltech Stinger and as soon as I can round up a few buddies to get the $50 group rate I'll re-dyno to see if the intake provides any gains.

Tom

 

Not sure where you got the idea that power and torque both peak at 5252 rpm. They are equal at 5252 rpm, but that is not where the peaks occur for the stock car. I dynoed my A6 when it was stock and the torque peaked at 3700 rpm and the power peaked at 6000 rpm.

However, I do agree that the power did not increase any past 6000 rpm.

 

My bad - your right.

Tom

 

Hey, no problem. You were probably just typing too fast!

You were right on though about your statement that you'll get no more power past 6000 rpm.

 

Hittman, REALLY NICE NUMBERS!!!!

I've always read that Mustang Dynos put down less power than DynoJets. You pulled more than I did on a DynoJet, I got 334 hp stock.

I'm curious how you made more power on the second pull. I lost 18 hp on the second pull. It was a hot day and you could see a dip at 3200 rpm where the timing was being pulled. After I did the 160 stat, my car did not lose any power on the second pull, it was very consistent, 359 & 360 hp (with LG headers).

Thanks,
Glenn

 

Glenn, from what I've read and heard, you're probably correct about the Mustang dyno reading a bit lower than a Dynojet. Quite a few guys in my area have dynoed on both, and see at least 10 HP difference, often more.

Main reason I got more power on the second run was doing the pull in fourth gear rather than third. We made the two pulls almost back to back. By the time we did the quarter mile simulation pull, the temp gauge was reading close to the 220 mark, so I may have been down on power a bit.

When I get around to doing a tune, I'll have the fans adjusted, maybe do a 160 thermo too (although I've always preferred a 180 for year-round use).

I attribute the strong numbers to driver skill!

 

Congrats, did you and Jeff get any tuning at all?? I've been talking to him about the beta of HP Tuners just haven't bought it yet.

Numbers look damn good for a mustang dyno. I would've popped down yesterday if I had known. I was watching UFC with Jeff and all last night and they told me about it.

Congrats on the good numbers.

 

No tuning at all --- Jeff doesn't have the latest release of HP TUners yet, probably won't get it until they sort out the A6 torque management issues. I'll wait until I hit 5K miles or so before I do anything else, so there's no rush.

Gary

 

Yes, the 3rd gear versus 4th gear should be slightly different with 4th being better. I dynoed mine in 4th. Great numbers, now let the modding begin! I really like the LG long tubes on my car, really woke the car up especially in the mid range: 39 foot pounds of torque and 26 hp without any tuning. Not sure if I'm going to do a cam or not. If I do it will be after the warranty is up.