New exhaust
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New User
Joined: Mar 2007
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New exhaust
I have a new to me 2004 F250 5.4 4x4. Wanting to put a Flowmaster system on with duel pipes. The question is which Flowmaster to go with. I dont want a system that gripes the neighbors but I want a tough sound. Any ideas/experience?
Posting Guru
Joined: Sep 2004
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From: Hamilton, MT
I think the super 40 series sounds good...some people say the 50 series. Flowmaster has kits for our trucks...Ones called the "American Thunder Series" and the other kit is the "Force II"...and I just noticed a kit that had a 70 series big block muffler. As far assound goes I think that 70 series is gonna be close to stock...but I am sure some one has got your answer and some better advice.
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Joined: Mar 2007
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From: at the truck pulls
I have the V10 so it may be a bit different. Anyway my 99 I put the 40 series and then split it out to fake duals. It wasn't too loud for the neighbors unless I revved it up. However I tow a camper and let me tell you Flowmaster is notorious for inside resonance, after more than a 3 hour trip it got to be bad. After 6 or 8 hours it took a half day to keep our ears from ringing.
On my 02 I went with the big block series, I think the 90 series. Well I went too quiet but for me I was influenced because I talked with them directly and they said it was developed with the V10 in mind. Because of the firing order you could make it sound like a V6 easily, but could not make it have a throaty sound of a V8. I could have went back to the 40 series or 50 series they said without it sounding stupid, but I'd been there already.
With the 5.4 you could probably go with the 50 series and be about right. I did that with my F150 with the 5.8 and was pleased.
On my 02 I went with the big block series, I think the 90 series. Well I went too quiet but for me I was influenced because I talked with them directly and they said it was developed with the V10 in mind. Because of the firing order you could make it sound like a V6 easily, but could not make it have a throaty sound of a V8. I could have went back to the 40 series or 50 series they said without it sounding stupid, but I'd been there already.
With the 5.4 you could probably go with the 50 series and be about right. I did that with my F150 with the 5.8 and was pleased.
