On the flowmaster website it shows that the 80 series is louder and more aggressive than the 40 series. But alot of people say that the 40 series is louder. Which one is really the loudest/deep/aggressive?

Between the 40 and the 80 series, which one flows the best?.......or do they both completly suck when it comes to flow?

I cant decide which series i want to use with my LT's & 3 inch pipes. All i know is that i want to let everyone know i'm comming

Let me know what you think about both.

Thanks

 

I have the 80 and they're pretty loud inside and out with no cat, shorty headers and a 3" I pipe. I've also heard that flowmaster doesn't flow worth a damn. Had it for 5 years now, snow and beach weather and it hasn't rusted out yet.

 

Both system sound loud, the 80 will have have dual outlet the 40 will have one outlet, as for freeflow that's why they nick name them crapmaster. If your planning to run LT the 40 series will be to big to fit under the car. Run a bullet muffler which are freeflow, sound's good, and will fit just right under the car.

Vinny