Ill type word for word.

PROJECT P5
48 hour power infusion for our project P5

" As apart of Mazda's involvement in out Trek 2 Texas 2002 event, we got the keys to a couple of P5s for the trip. The red one was destined to remain with us as a long-term tester. We knew we were taking delivery a scant 48 hours before out departure on the 2000 mile Trek. We also knew the sporty wagon deserved to be dressed to thrill for the fourstate blast into the Southwest.
A quick call to HKS got us a Power Flow intake and cat back exhaust; DAZZ Motorsports stepped up with a set of RH Evolution C3s to join our Falken rubber and H&R lowing coils to give the 5 a proper stance. On the trek, the Pro looked sharp traveling down the road and thanks to the performance upgrades, it easily overpowered the yellow (stock) p5 that only had a set of wheels.

Off To The Dyno Cell
THe parts came in the day before the car so we shot them and took the car to the Area 51 Fabrications in Irvine CA. for installation. The area 51 crew allowed us to use its claton dyno and all installation and testing took place on the Sat. before out Monday departure. The wagon was strapped to the rollers fo the baseline testing which showed 123.9 HP and 126.6 lb of torque at the wheels.
The first power part was the HKS air filter. The 5 min install netted 125.8 hp and 127.5 torque. At peak we realized gains of 1.9 hp and .9 torque.
Next up was the HKS cat back which features a stainless stel muffler canister and wide mouth tip. With system bolted in place the rollers spun to the tune of 129.6 hp and 132 torque which indicates a gain of 3.8hp and 2.5 torque.
The gain of 5.7hp has more impact when you consider it represents a 4.5% gain over stock. The p5 is a neat little car.

 

someone reply.

 

When are they gonna add the turbo?!

 

Okay..am I confused here, or did they get 123fwhp stock??? What am I missing here? My P5 did 102.1fwhp stock. Where's my extra 20 hp??

 

^^ Exactly my point.

How did they get 123 HP stock?

 

Thats one big manufacturing variance.

 

You betcha...I am thinking a spread of 100-110 might be 'ok' for the car, but not 100-120+!

 

Injen only got 110.9 out of an MP3...keeping in mind that the MP3 engine is suppose to produce 140 hp at the crank.

 

That seems better..considering my 130 crank, 102 wheel hp #s.

 

We all have the same question .....how did they get 123.9hp from stock.

When stock is approx 100 - 105 hp

 

sweet

 

The difference is probably one of two things:

1) They dyno'd it on a Clayton Dyno. This will report different numbers than a Dynojet which is probably the most common and the Mustang Dyno which is probably the second most popular. Variances can be large on this factor alone.

2) A dyno does not give just one figure. There are many factors that can change the numbers. One may list figures in the SAE or standard horsepower while the same run will have completely different numbers if a "Corrected" figure is displayed. Corrected figures account for atmospheric conditions and elevation in the equation to give a more universal number. The same car will NOT have the same numbers if dyno'd at 5000ft elevation on a 85 degree day as at sea level on the same 85 degree day.

Other factors may include: mass of the wheel and tire combination, changes in gear multiplication based on different tire and wheel combos, the gear used for the dyno pull, etc.