TSP Stage 1 vs One+ Tune (10th Gen Si)

TSP Stage 1 Si Tune vs TSP Stage One+ Si Tune

The Stage One+ has numerous fuel, ignition, turbo response, and throttle response changes over the Stage 1. It also has a more aggressive tuning strategy compared to the original TSP Stage 1, allowing for more midrange and top-end power.

Stage 1
 - Map 3 Sport Mode - 24.5 PSI
 - 93 Octane recommended, but 91 can be used
 - Works for bone stock to full bolt on

Stage One+

 - Map 3 (with or without Sport Mode enabled) - 26 PSI
 - 93 Octane Required, but can use 1-2 gallons pump e85 w/ rest of tank 91
 - Works for bone stock to full bolt on, but an upgraded clutch is recommended. If you don't have one,     we'd recommend having that on the "soon to do list".

This is how our Stage 1 Tune compared in our dyno testing on a Stock Si:

182whp / 206tq - Factory Calibration
208whp / 258tq - KTuner Starter 23psi
237whp / 281tq - TSP Stage 1 Tune

This is how our Stage One+ Tune compared to the Stage 1 on a stock Si:

234whp / 279tq - TSP Stage 1 Tune
248whp / 290tq - TSP Stage One+ Tune

For a complete list of all the features for either tune, please see both of their respective pages:

- TSP Stage 1 Si Tune

- TSP Stage One+ Si Tune