I just switch out my flowmasters for the frpp gta. I had to loosen the clamps on the h pipe to get the fit i needed because the frpp did not slide on as far as the flows. I cant feel any leaks now but i get a few drops of h20 out of the h clamps when cold. I pushed the pipes colse together and tighten the h clamps tight. The clamps on the frpwhere kind of cheep looking but i dont feel any air lose right now. Is it hard to get a 100% seal on every thing? Should i have the frp welded at a shop? Is this really any thing to worry about or should i not make a big deal out of this? Again i pulled every pipe close together and tighten all clamps. Oh buy the way the frpp sound really good not as deep as the flows but zero drone. thanks for your help.

 

If you cant use the flowmaster clamps, Then yes have a shop weld them on. I have read many posts about drone on Flowmaster axle backs, I have not have one bit of drone or rattles even after I added my off road H pipe (knock on wood) If you like the mufflers and are more than likely going to be permanant. Have a shop seal them for you.

 

I'm the same - I have zero drone on my Flows, yet I hear a lot of people with them have the drone. Just lucky, I guess.