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I finally installed the Flowmasetr 40 Delta on my 2000 F150 with thr 5.4 V8. I have pics of the stock muffler opened up. I have sound clips of the stock exhaust, striahgt pipe no muffler exhaust and the Flowmaster 40 series Delta. I am very very pleased with the results so far. Sound great. Listen for your self.
Originally posted by ford5.8 What size of pipe did you use..Did you put 2 40 series mufflers on or just 1??Did u nitice a power increase or is that just a gimic??
I bolted one SI/SO Flowmaster 40 series Delta Flow muffler onto the stock 2.5 inch pipe. I did not change any of the stock pipe. Its hard for me to tell if there was any performance gains. I have not had the truck for a long time. If there was any it was very minimal. I did not do this upgrade mainly for the performance but more for the sound. One other thing. I did not reset my computer yet and may do that and see if there is a differance.
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