The Stage 1.5 injectors are very popular for towing and everyday driving with a little more power than stage 1 and still keep low smoke levels. Stage 1.5 achieves more power with the larger nozzle but they are still a great choice for towing and without stress on the stock drivetrain. The power made is very noticeable in all driving conditions from off-idle to full throttle.
Stage 1.5 injectors feature new 30% larger nozzle and plunger barrel assemblies for long life and predictable performance. The new single-shot design is more efficient and requires a custom-tuned chip to achieve the best performance. Power increases are up to 200 hp over a stock truck without any prior modifications. Fuel mileage may increase up to 1-2 mpg depending on driving style and driving conditions.