TC Stg1 2-11 at 85F

Some warmer temperatures made for an opportunity to record boost onset from the Turbo Concepts Stage 1 turbo’s to compare with readings made during a cooler time of the year.

Readings were made by going WOT from a number of different starting engine speeds.

Turbo Concepts Stage 1 Turbochargers - Boost Onset

Turbo Concepts Stage 1 Turbochargers – Boost Onset

Shown below is a compilation of all the data of this type that I have on the TC Stg1 turbo’s with the 85 degF data, which I recorded today, connected by a solid line.

Turbo Concepts 2-11 time data compilation

The primary alternative product for the TC Stg1 turbo is the BorgWarner RS4 K04.  A comparison of the two turbochargers, at 85 degF, is shown below.

Turbo Concepts Stg1 vs BorgWarner K04

Turbo Concepts Stg1 vs BorgWarner K04

These results are consistent with other data previously recorded where the BW K04 has a slight advantage in boost response over the TC Stg1 turbo’s.