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View Full Version : GHOTT's DASA vs. HMF Pipe Test 05' 450R



ghott
11-18-2006, 08:21 PM
THE HMF runs and the DASA Runs were done the EXACT SAME DAY!!!

WPP Racing was kind enough to work me in for some dyno time today (Saturday) 11/18/06. Brian gave a broke arse college kid a good deal . As always, he has a great, and smooth operation going at his shop.

The dyno setup he has is working great. The exhaust gets pulled out, and he always has fresh air blowing right into the quad. Great looking, and light Dyno slicks on light rims. I couldn't have asked for more. If anyone is wondering, he definitely knows what the hell he is doing. I was IMPRESSED to say the least. My first dyno experience was great!

Once again, THANK YOU Mr. Brian .

So...

My setup is as follows:

05' TRX450R
- 13.1:1 Wiseco (94mm stock bore)
- Hot Cams Stage 2
- Ferrea Super Flow Intake Valves (stock size)
- Sparks Filter
- DASA Pipe
- Airbox Lid OFF

Stock crank, carb, springs, exhaust valves....etc etc etc....

Sunoco/CAM2 Purple 110 (R+M/2) Fuel
American Racer Dyno Slick Tires
14/38 Gearing
Pulls done in 4th Gear
Dynojet type DYNO

Jetting for HMF:
178 main
48 Pilot
HRC Needle 3rd Clip

Jetting for DASA:
190 main
50 pilot
HRC Needle 3rd Clip

The jetting was just a hair fat on the DASA. It needed a 188 main, but neither Brian, nor I had one currently in stock.

Best HMF HP: 46.59 hp
Best HMF TQ: 31.84 ft/lb tq

Best DASA HP: 47.65 hp
Best DASA TQ: 32.53 ft/lb tq

First graph is RPM, second graph is MPH.

Again, the DASA ran a little fat...might have been able to squeeze a little more out of her with a smaller main.

To recap, the DASA provided more HP on the bottom end, and more horsepower on the top end, with much better over rev. The DASA also provided more peak, and top end torque.

ghott
11-18-2006, 08:22 PM
MPH Graph same runs..