[ultraflo]

The delta flows are a bit quieter... they eliminate the drone that is common with the standard flows. I'm not real impressed with the sound of the flows. I've installed soooo many of them over the past few years, I just get sick of hearing them. The customer is always right tho, so if that's what they want, that's what they get! I prefer the sound of the magnaflow and ultra-flo mufflers... quiet at idle and they have a real nice tone to them when you put your foot to the floor.