Actually your flows won't drown out the S-Trim. That blower will give away your car if you arew going for that sleeper look. Both blowers are priced the same. Not all the SQ-Trim blowers are silent. Some could be a little louder than others because they are not all built the same. If you put on the power pipe the blower whine does become more audibledonjohn said:no need for that, i think my flows would drown it out anyhow