borla 40670 muffler install 5.0 screw
#1
borla 40670 muffler install 5.0 screw
So I decided it's time to get rid of my 14" sido magnaflow and go with a 19" sido borla pro xs. I can't stand the rasp sound the magnaflow is putting out on higher rpms plus it's a tad bit onthe drone side, I've almost only read good things about the borla mufflers, so I'm really excited to hear it on the 5.0 as I only found a few 5.0's with borla muffler swaps on YouTube. This should solve at least a little of the drone and the raspy cackle sound, when I get it installed I'll be posting a video and review.
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STX196 (09-11-2014)
#3
Senior Member
#4
Not sure but I might be returning the muffler I have with the 2.25" dual exits for a 2.5" dual exit one as it is about $30 cheaper and I believe the 2.5" dual exit pipes could help improve flow, I'm torn though because some sido catback kits have dual 2.25" tailpipes and some have 2.5" ones, like the borla atak is 2.25" but the s type is 2.5", I don't know why they aren't the same since they are for the same truck with the same engine.
#5
So I'm now 100% sure what I'm doing, going to do this right once and for all. I've now realized that the 2.25" tailpipes are part of my raspy tone problem now, so I returned the 40670 borla and ordered the 40349 with 2.5" exits. I am also re-doing the tailpipes and mid pipe with stainless steel piping instead of aluminized steel which I have now. So this system will acutally last especially since I live in Ohio (salty roads all winter). I will be posting a video and reviewing in about a week, I am planning on getting it all installed this friday. Here is the cost break-down:
-Summit Racing 3" diam. 409 stainless pipe (for mid pipe): $37
-Borla Pro XS 40349 muffler: $105 Streetside Auto
-2 Summit Racing 12" stainless tips: $70
-Estimated labor plus 409 stainless dual tailpipes: $320
-Summit Racing 3" diam. 409 stainless pipe (for mid pipe): $37
-Borla Pro XS 40349 muffler: $105 Streetside Auto
-2 Summit Racing 12" stainless tips: $70
-Estimated labor plus 409 stainless dual tailpipes: $320
Last edited by brc1989; 08-16-2014 at 06:24 PM.
#6
So it's done, the new custom exhaust is in, just as listed above, here are some pictures for now, video to come. First impressions, amazing work. I have to give props to Steves Auto Service in Cuyahoga Falls, OH for some crazy good pipe bending skills, all mandrel bent too! There are easily less than half of the crazy bends the other shop did on my first system. This place is well worth the money, ended up being a little less than I thought too.
Now for the sound, first of all I am happy to say (from what I can tell driving in cab) the rasp is gone! I was expecting it to be a little more quieter than it is, has the same volume as my system before if not a hair more, guess the slightly larger muffler with the larger pipes kept that the same. I am not too sure from just in cab driving, but I think the tone got a tiny bit deeper. It sounds the same in cab as before too I believe, not much change there which is honestly ok with me, I am already used to a little bit of drone. I swear I noticed my fuel economy is more responsive on my gauge screen too. Overall it just seems a little smoother driving it. Hope this helps to anyone looking for a system like this!
Now for the sound, first of all I am happy to say (from what I can tell driving in cab) the rasp is gone! I was expecting it to be a little more quieter than it is, has the same volume as my system before if not a hair more, guess the slightly larger muffler with the larger pipes kept that the same. I am not too sure from just in cab driving, but I think the tone got a tiny bit deeper. It sounds the same in cab as before too I believe, not much change there which is honestly ok with me, I am already used to a little bit of drone. I swear I noticed my fuel economy is more responsive on my gauge screen too. Overall it just seems a little smoother driving it. Hope this helps to anyone looking for a system like this!
Last edited by brc1989; 08-22-2014 at 07:53 PM.
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STX196 (09-11-2014)