FOR SALE: 1996-2004 Toyota Tacoma STS Rear-Mounted Turbo System

its kool man i'll let u know tomorrow.

i'll get and post my 3rd gear dyno pulls tomorrow too.

 

yeah... my truck was going 110mph at 4500 rpm

i'm still waiting to get my slips on my 3rd gear pulls

 

mine was also intercooled and running on FMU...i wanted to tune it before i sold it just to see what it would be pushing.

 

Vortex / 7:1 disc

 

yes and yes

 

it doesn't say the psi

the pump is a 255 walbro

 

Chris,
This is Nik from Soho Motorsports and I have been reading the questions that you asked about why the peak horsepower happens at 4500 rpm instead of where the stock peak horsepower should be happening. Looking at the stock dyno graph that you posted above it seems that it was a third gear pull and the peak horsepower was reached at around 4900 RPM and the maximum torque was reached at 3900. If you take a look at the dyno graph that I have posted up along with this reply, the blue being the third gear pull, you will see that the trace off of my dyno graph is very similar to the stock dyno graph. The peak horsepower for this kit was reached at around 4900 RPM and the max torque was reached at around 3900 RPM. I have also included a dyno graph with the engine speed on the x axis of the graph to show you the difference between the two gears and how it can shift the point where peak horsepower and torque are reached. The reason for this shift in the peak horsepower and torque is because of the higher gear and the closer ratio between the motor and the wheels, these factors place a higher load on the clutch and the motor, which produce a higher value in horsepower and torque. These factors along with the very small A/R ratio of the turbo which is a 0.60, also play a part in why the torque peaked so early. Having such a small A/R ratio allows for the turbo to spool up very fast at lower RPM ranges, thus creating a better low speed response and instant torque.
Finally, the peak in horsepower that occurred around 4500 RPM while in fourth gear was due to the fact that the spring in the wastegate was only set to 7 psi, thus this 7 psi was reached at around 4500 RPM, instead of 4900 RPM. The kit did not come with any electronic boost controller, which stopped us from setting it to a value where the maximum power could be produced for this kit. Let me know if you have any more questions about this system.




Below are the dyno graphs with the SAE corrected factors for the third gear and fourth gear pulls with respect to RPM. The Third gear pull produced a peak horsepower of 217.97 HP and a peak torque of 258.78 ft-lbs, while the fourth gear pull produced a peak horsepower of 232.11 HP and a peak torque of 287.06 ft-lbs. Once again the SAE corrected factors show what the motor would produce at 59 degrees Fahrenheit, zero humidity, and 29.34 inches of mercury.


that is the corrected factor graph.

 

The complete kit is for sale for $5,200

 

still have kit???

 

yeah