Customer reviews

”Very satisfied. For the first time i'm almost down to 0.5L/10km. And the car lost traction when i accelerated in first gear!“

– Alfa Gulietta

”Went home with 265HP, came with 224, and saving over 10% fuel as well!“

– Mercedes Viano

”Came with 116HP. Drove home with 153, and also about 30% more Nm from the bottom.“

– Toyota Previa

”Hello. New fuel record 400km drive without even trying. Down from 0,54 to 0,5 per 10km. Much more comfortable driving with less shifting and better low end torque. Not to mention it's awesome to feel that extra kick when stepping on it! Thanks for job well done!“

– Berlingo HDI

bestchip.co.uk / Båt / Mercruiser

{ChosenBoat}

Mercruiser QSD 4.2

4200 ccm - 257 kW (350 HK) - 704 Nm

Depending on which engine you have in your boat, you have different chiptuning choices. You have 1 alternative for your Mercruiser QSD 4.2. Please make sure that you have selected the correct engine from the vehicle list. These are the options for QSD 4.2 with 350 HP. The product images are illustrative and colors may vary from actual product.

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