GTSSportCoupe
2LTE abuser
Thought I'd try out a poor man's dyno. Home - PerfExpert
Did a bunch of research on smart phone accelerator based power estimators. PerfExpert seemed to have the highest reviews for realistic results (when used properly). I went for it and installed it on my Android phone.
I also have a 'G-Tech Pro' device which was popular over a decade ago. Also known to be very realistic (again when used properly). I have used this with other vehicles and it is usually dead on.
I have a weight scale near my house, so am able to get a pretty accurate weight for my truck. I meticulously entered all the specs for my vehicle into PerfExpert.
So the G-Tech device on multiple runs on many different roads gave me a solid average of 78hp to the rear wheels.
And here is the result from PerfExpert (a typcial result of five different runs). I exported the raw data and made a graph in Excel so I could post it here. This is power and torque at the rear wheels. Matches the G-Tech result very closely.
It is an automatic. Done at sea level at 10 degrees Celsius. This is my daily driver and towing tune.
LJ78 with 2LTE engine:
- Intercooled
- 17.5psi (post intercooler)
- EGT's less than 800F on this test
- 2.5" exhaust and high flow intake
- 3L camshaft (breaths better apparently)
- Methanol/water injection
- Tuned by way of spill control valve and boost sensor
I'm quite impressed with the app to be honest.
Did a bunch of research on smart phone accelerator based power estimators. PerfExpert seemed to have the highest reviews for realistic results (when used properly). I went for it and installed it on my Android phone.
I also have a 'G-Tech Pro' device which was popular over a decade ago. Also known to be very realistic (again when used properly). I have used this with other vehicles and it is usually dead on.
I have a weight scale near my house, so am able to get a pretty accurate weight for my truck. I meticulously entered all the specs for my vehicle into PerfExpert.
So the G-Tech device on multiple runs on many different roads gave me a solid average of 78hp to the rear wheels.
And here is the result from PerfExpert (a typcial result of five different runs). I exported the raw data and made a graph in Excel so I could post it here. This is power and torque at the rear wheels. Matches the G-Tech result very closely.
It is an automatic. Done at sea level at 10 degrees Celsius. This is my daily driver and towing tune.
LJ78 with 2LTE engine:
- Intercooled
- 17.5psi (post intercooler)
- EGT's less than 800F on this test
- 2.5" exhaust and high flow intake
- 3L camshaft (breaths better apparently)
- Methanol/water injection
- Tuned by way of spill control valve and boost sensor
I'm quite impressed with the app to be honest.
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