This test shows the differences between chambers on a KT100 Yamaha kart engine. The blue line was a common “Wobbly” pipe,The red line was the FIA  homologated Italian design.

Often it is helpful to be able to compare the acceleration times of two or more engine configurations. On this graph it is possible to nominate the start and finish rpm, and compare the time taken to accelerate between the values.

EGT readings from several runs on a Suzuki RGV 150 kart engine