Ed's Revo Turbo Upgrade

[Nate489]

Turbo cars are typically ran uncorrected, the turbo corrects for the atmosphere difference

 

[FORZDA 2]

Turbo cars are typically ran uncorrected, the turbo corrects for the atmosphere difference

Not true, but ok if you think so. I still would like to see the actual run file(s).

 

[ron@whoosh]

Turbo cars are typically ran uncorrected, the turbo corrects for the atmosphere difference

Not true, but ok if you think so. I still would like to see the actual run file(s).

everyone loves Stratified
here's a quote from Alex on the interwebs

Correction takes into account temperature and pressure and follows the J1349 standard. This is meant to normalize hp readings taken in different temperatures and at different pressures (altitudes) so that everyone is on the same playing field when comparing hp numbers. However this doesn't work well with turbo cars.

The baseline is 25* C temperature (77F) and 99KpA pressure (pretty much sea level pressure). This is a correction factor of 1.0 - or no correction.

If the temperature is colder, you will make more power and to normalize this the correction factor will start to be below 1.0 and vice versa if temperature is hotter.
If the air density is lower (higher altitude), you will make less power and to normalize the correction factor will be above 1.0. The same goes if air density is higher.

For turbocharged cars this model is however not accurate. At high altitudes the compressor is able to overcome the loss in air density and turbocharged cars are a lot more sensitive to temperature changes (in how timing for example is affected). This is why a lot of dyno shops don't apply correction factors when testing turbo cars and engines. The uncorrected power is exactly what the car makes on that day and in that location.

 

[FORZDA 2]

everyone loves Stratified
here's a quote from Alex on the interwebs

Correction takes into account temperature and pressure and follows the J1349 standard. This is meant to normalize hp readings taken in different temperatures and at different pressures (altitudes) so that everyone is on the same playing field when comparing hp numbers. However this doesn't work well with turbo cars.

The baseline is 25* C temperature (77F) and 99KpA pressure (pretty much sea level pressure). This is a correction factor of 1.0 - or no correction.

If the temperature is colder, you will make more power and to normalize this the correction factor will start to be below 1.0 and vice versa if temperature is hotter.
If the air density is lower (higher altitude), you will make less power and to normalize the correction factor will be above 1.0. The same goes if air density is higher.

For turbocharged cars this model is however not accurate. At high altitudes the compressor is able to overcome the loss in air density and turbocharged cars are a lot more sensitive to temperature changes (in how timing for example is affected). This is why a lot of dyno shops don't apply correction factors when testing turbo cars and engines. The uncorrected power is exactly what the car makes on that day and in that location.

Yes, and the statements apply to ALL engines. If a correction factor is applied, the numbers are somewhat relatable to different turbo engines from the same location using the same correction method. If you're at high altitude and looking for the biggest numbers possible (like most people) the correction factors (all of them) will inflate the numbers. If at or near sea level, the uncorrected numbers are generally higher. I'm fully aware of all the technical details applicable. I can examine the run file and determine pretty much every variable.