2009 cts v showing gas mileage increase with 2 5 pulley and 3in exhaust no mufflers.

[JonDeth]

Long term results will prove he gained maybe 2 to 4 miles per gallon and the meter was wrong.

[virus626]

man i gotta do this on my car, mileage sucks on it, and its my daily driver lol.

[riccardotumewu123]

What do u get as daily driver? I am thinking of getting one just wanted to know the mpg. city and highway in real life.

Thanks

[virus626]

im getting around 10.7 in total with 35% of the time on the freeway, but its like 10 city if you drive calm and 19 hwy

[wait4meperformance]

Massive tuning was required, more boost and free flowing exhaust.

[cody5090]

can u make a video of you in the car and looking at the dashboard and accelerate fast

[derbaroper]

i don't know if i get it right? ... a new exhaust shall double the average mileage? well, it sounds a lil bit strange to me! how should that work? .. but maybe my english isn't good enough for correct understanding!?

[PlayaJattXP]

That is one nice car.

[HW2800]

I hope he sign on as a GM CTS-V consultant! If his invention works; no more gas-gusser tax and could be the "green" car of the next 5 years!

[neuronbob]

Any mod that can improve the gas mileage on the V can only make it more appealing.