elcompalaline Posted August 5, 2009 Report Share Posted August 5, 2009 (edited) Two days after I got my truck I put in a 40 series flowmaster with single 3 inch pipe. I honestly can't remember if it ran better or worse after the install since I didn't drive it very much before it when stock. So it feels sluggish on take offs and I think it might be because of a lack of back pressure. So my question is, do I replace the pipe to 2 1/2 inch or can I have them dump it right after the muffler (will drone and loudness be an issue if dumped?). Keep in mind I've got a 4.8L and I know most of you will just recommend a tune but unfortunately thats not something I can get done just yet. Thanks in advance guys. Edited August 5, 2009 by El Compa Lalo (see edit history) Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted August 5, 2009 Report Share Posted August 5, 2009 Is it a dual 3" or a single 3" system? Quote Link to comment Share on other sites More sharing options...
elcompalaline Posted August 5, 2009 Author Report Share Posted August 5, 2009 Single 3 inch. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted August 5, 2009 Report Share Posted August 5, 2009 Sindle 3" should be fine....might want to try another muffler like Magnaflow...... Quote Link to comment Share on other sites More sharing options...
elcompalaline Posted August 5, 2009 Author Report Share Posted August 5, 2009 Will look into that. Thanks Quote Link to comment Share on other sites More sharing options...
LilEz02 Posted August 7, 2009 Report Share Posted August 7, 2009 i put 2 1/2 single into a gibson. it dumps into 2 turn downs. i thought it was going to be to loud but it sounds pretty good. drone a little at a certain rpm. i did notice that it gets dirty quicker with it blowing around dirt more Quote Link to comment Share on other sites More sharing options...
elcompalaline Posted August 7, 2009 Author Report Share Posted August 7, 2009 i put 2 1/2 single into a gibson. it dumps into 2 turn downs. i thought it was going to be to loud but it sounds pretty good. drone a little at a certain rpm. i did notice that it gets dirty quicker with it blowing around dirt more Yea, I had it dumped on one of my last trucks and dust was all over the place when I hauled a$$! LOL! I think I will go into town this weekend and visit the local muffler shop to get some prices. Quote Link to comment Share on other sites More sharing options...
elcompalaline Posted August 12, 2009 Author Report Share Posted August 12, 2009 Finally went to town and found a muffler shop. We decided to go with a 10" piece of 2 1/2" pipe on the tip of the 3" to slow down the exhaust gases. Cost me $20 and well worth it. I lost a bit of top end but gained the equivalent in the low end. It seemed sluggish before and alot more responsive now. These results gave me the "bug", can't wait to get my tune now! Quote Link to comment Share on other sites More sharing options...
huero626 Posted August 12, 2009 Report Share Posted August 12, 2009 Finally went to town and found a muffler shop. We decided to go with a 10" piece of 2 1/2" pipe on the tip of the 3" to slow down the exhaust gases. Cost me $20 and well worth it. I lost a bit of top end but gained the equivalent in the low end. It seemed sluggish before and alot more responsive now. These results gave me the "bug", can't wait to get my tune now! What tuner are u going with? Quote Link to comment Share on other sites More sharing options...
elcompalaline Posted August 12, 2009 Author Report Share Posted August 12, 2009 What tuner are u going with? Probably Wheatley. Quote Link to comment Share on other sites More sharing options...
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