Pepperidge
Member Advocate
I think Corsa has the best out of the box muffler for being quiet yet still perform...I know the MBRP I have is atrocious for noise...I'm probably going to swap a corsa muffler onto it...
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Which vendor sells Diamond Eye?
- Thread starter restoguy
- Start date
I wondered if something like this might be an issue. I fear it might take a competely different program to bend the stainless into the same shape as aluminized. But I wonder if the burbs have a different shape over the rear axle because of the floor in the back? Maybe a pickup doesn't need such a tight bend? I'll have to call and find out...
handcannon
Well-Known Member
http://www.ftediesel.com/store/pc/viewPrd.asp?idproduct=24&idcategory=7
I came across this resonator/muffler combo recently. It can also be purchased just as the resonator without the muffler. Has anybody had any experience with it? How would it compare to the Corsa?
Don
I came across this resonator/muffler combo recently. It can also be purchased just as the resonator without the muffler. Has anybody had any experience with it? How would it compare to the Corsa?
Don
Jorge6.5
Well-Known Member
Where can one find a glass pack that is 4"?
I like the Idea of mounting pre muffler like thethermenator mentioned
I like the Idea of mounting pre muffler like thethermenator mentioned
- Staff
- #25
Trucks don' suffer from drone like the BURBS do. All of that open space in the back turns into a giant speaker echoing any noise forward. Trucks with toppers can also get some noticeable drone from this reverberation.
I like mine. Still a touch of drone on some of my tunes with alot of timing, but very withstandable under most any condition. There not cheap, but worth it if you have a significant other who doesn't like a noticeable exhaust inside(outside though sounds almost like a straight pipe when I romp on it).
GM Guy
Manual Trans. 2WD Enthusiast
so we are saying the Diamond eye with muffler is great for trucks, but burbs need a little more? what about the straight pipe system for flatbed trucks? 
tanman_2006
Just a farm kid...
so we are saying the Diamond eye with muffler is great for trucks, but burbs need a little more? what about the straight pipe system for flatbed trucks?
I run a dump in front of my axle under my flat beds. Its loud! I'm thinking i will just put stacks in the 93 but Ol' Blue will get a diamond eye or full exhaust eventually.
My Dmax has a 5in Straight pipe Diamond eye. It makes noise on take off and towing but cruising its not noticable, I'm 24 and i like the way it sounds.
dka99burb
Member
I would say this is accurate. I like the sound when I romp on it but its a little loud in parking lots. Plus the drone carries through the burb at highway speed. Still a HUGE improvement over stock!so we are saying the Diamond eye with muffler is great for trucks, but burbs need a little more? what about the straight pipe system for flatbed trucks?
DennisG01
Member
Resto, if you haven't gotten anything yet, I have Kennedy's system. I wanted EXACTLY what you are saying about an exhaust system. I really like his system. I had another on there before and I had some droning at highway speeds - not awful, but some. With JK's, it's VERY nice. Let me put it this way... My wife has no complaints. I can hear it growl when I load it up, but other than that it's quiet. I don't know, offhand, what muffler is in there, but maybe he can sell you just the muffler? Note that his system is not a 100% bolt-in, but once I laid it out it was very easy to do the minimal trimming that I needed. The clamps/bands that he includes in the kit are REALLY nice! If you would end up going with his whole system, let me know and I can take some pics/measurements for you. He does include a good set of instructions, though.
bobbiemartin
Author of The DB2 Conversion Guide
Thanks for the suggestion DennisG01. I'll have to give him a call and ask a a couple questions.
I called DE and asked about a SS system. The nice lady who answered the phone said that it wasn't something they were likely to do. Even as a special request. I suppose they make them in batches, so you'd have to catch them making 6.5 systems and talk someone into putting 409 on the bender for one run. I also asked about a 5" tail pipe (muffler back) and again, not likely to happen. I figured as much, but it was worth a shot.
I called DE and asked about a SS system. The nice lady who answered the phone said that it wasn't something they were likely to do. Even as a special request. I suppose they make them in batches, so you'd have to catch them making 6.5 systems and talk someone into putting 409 on the bender for one run. I also asked about a 5" tail pipe (muffler back) and again, not likely to happen. I figured as much, but it was worth a shot.
Jorge6.5
Well-Known Member
I sure wish I had a 5 inch tail pipe post muffler
- Staff
- #33
I don't know about the trucks, but on a bURB a 5" would be out of the question. The 4" was pretty snug in quite a few spots going over the axle in mine. You may be able to use a DURAMAX exhaust as I know some guys swap in used stock DURAMAX exhausts to there 6.5's for a cheap upgrade.
I think there would be plenty of room in a pickup. I want it for two reasons. First, it deepens the tone. Making it a little meaner and a little less harsh. Second, the Magnaflow system I got for my 1/2 ton has a 4" tail pipe w/5" tip....my diesel needs to be bigger than that!
OK, so MF's site says 2.5" with a 3.5" tip, but I swear it's bigger than that!
OK, so MF's site says 2.5" with a 3.5" tip, but I swear it's bigger than that!
It is... Typo on the MF site. It's a 3.5" pipe with 4" tip.
handcannon
Well-Known Member
In my pickup I currently have a 4" Diamond Eye system with their straight through muffler, which is a bit louder than I want, especially when going uphill with a load.
If I'm understanding the article correctly, I need to find a muffler that does a good job of quieting the exhaust and then get it in a larger inlet/outlet size, such as 5".
Does anybody have any input/experience with any of this?
Don
DennisG01
Member
Mine is a 3.5" in/out. I have NO problems AT ALL with flow. I wouldn't mind having a larger pipe, but it would just be for looks. A larger pipe won't give any more performance - sort of a "diminishing returns" thing. What I might do is just put a bigger tip on it.
bobbiemartin
Author of The DB2 Conversion Guide
If you use the math in the article, you come up with this (based on a single exhaust pipe)
Now the article is based on a NA engine, turbos may be different, but I doubt that much different
3" pipe has an area of about 7", which flows about 800 CFM, which is good for about 365 HP before you get a HP loss
4" area 12.5", 1435 CFM, 650 HP
5" area 19.6", 2250 CFM, 1020 HP
I dare say a 3 or 3.5" pipe is more than enough for most 6.5's
If I ever get around to it, I have a 3" exhaust now, I would like to try a 3.5" Flowmaster type muffler with a 3.5" tailpipe.
I wouldn't go bigger if you want less noise, smaller would be what you want.
Jorge6.5
Well-Known Member
In my opinion and from my experiences, the smaller the pipe the louder it is at least there is much more snap, crackle, pop.
My exhaust exits in front of rear tire, it's way too loud for me, need to get the tail pipe away from the truck and point out rear corner,
My exhaust exits in front of rear tire, it's way too loud for me, need to get the tail pipe away from the truck and point out rear corner,
GM Guy
Manual Trans. 2WD Enthusiast
bobbiemartin, do those flow rates factor in internal drag through bends, and just long distances of pipe?