Street Dyno
I have recieved a few questions regarding the Street Dyno software that I have used below to show dyno readings. Please CLICK HERE to view a short page I created with an explanation on how it works, and what you need to use it on your car.
September 19, 2004
| R/T: | | 0.419 | | 0.511 | | 0.742 |
| 60': | | - | | 2.137 | | 1.901 |
| 330: | | 5.568 | | 5.975 | | 5.650 |
| 1/8: | | 8.671 | | 9.070 | | 8.743 |
| MPH: | | 79.14 | | 79.49 | | 79.46 |
| 1000': | | 11.363 | | 11.739 | | 11.414 |
| 1/4: | | 13.627 | | 13.979 | | 13.656 |
| MPH: | | 98.79 | | 101.03 | | 100.93 |
After a long search, I could not locate my time slips from this day. This was at the Sport Compact Challenge event, in Edmonton Alberta. The elevation at this track is 2200ft. I managed my best runs to date. I ran 14 psi at the track, and added water injection since the last time I ran. I was quite happy. More to come in 2005!
July 23, 2004
A month after the Seattle trip, I decided to take the care out to Race City Speedway in Calgary, to see how the car performs at 3500ft. I started to get the hang of launching a little better. It seems that with my setup, the higher you hold the revs before taking off, the quicker you will be off the line. I made a slight improvement on my time, which is impressive for the altitude. More notably, my trap speed was nearly 3mph slower. Clearly the car pulled better at sea level. Taking a closer look at the slips shows that I lost the speed mostly in the top end. There were no new mods for this run over Seattle. Had I launched better, I would have most likely broke into the 13's at sea level.
June 26, 2004
Click graph to view the full printout
The second day of my Seattle trip took us to a 4WD Dyno, to test out a few of the cars. I made no changes to the car, and ran a consistent 12psi of boost. The water injection was not activated. This proved to be a testament to the accuracy of the Street Dyno software, showing only 4whp less than the Street Dyno had shown. This kind of variance can occur between two runs, so more than likely the Street Dyno is EXTREMELY accurate. The dyno graph above is power and torque measured at the wheels, with no correction for drivetrain losses.
June 25, 2004
With no new mods since the previous Street Dyno run, I took the car to Seattle, Washington, for an Alltrac meet. After a 12 hour drive we went directly to the track for some runs. I did a 14.159 at 98mph, however I was not launching as best as I could have been. This is at sea level as well, which should be noted. The track I run at in Calgary lies at 3500ft.
May 30, 2004
Click the graph to see the BHP number using a 20% drivetrain loss figure
A new Street Dyno graph with the boost set to 12psi. All relevant mods are listed in the comments field. The CT20b seems to respond very well to boost.
March 30, 2004
Click the graph to see the BHP number using a 20% drivetrain loss figure
This is the first street dyno I have for the car since the ST185 engine swap. Mods are listed in the comments field above. Considering the stock JDM ST185 engine is rated at 225hp at the flywheel, my mods seem to have paid off very well for themselves. Using a figure of 20% for drivetrain losses, this is a gain of 24hp over stock without increasing the boost.
July 5, 2002
This was my first real attempt at 1/4 mile racing. Modifications at the time were a freshly rebuilt ST165 engine, 50 trim CT26, mild porting on the head, TRD metal head gasket, and an aftermarket 2.5" muffler. Boost was stock. 15.780 is fairly respectable considering the stock time is 15.6 for the car. Considering that the track sits 3500 feet above sea level and very minimal mods were done, the car did very well. The stock clutch did not perform well for launching.
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