Diamond Eye Exhaust questions - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 10-13-2013, 06:06 PM Thread Starter
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Diamond Eye Exhaust questions

Hey y'all, I m lookin for a new exhaust system and have narrowed it down to Diamond Eye (I think) and was wondering what experiences yall have had with them. Might do the dual system but not sure. Any pic's or opinions appreciated!
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post #2 of 14 Old 10-13-2013, 06:35 PM
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Diamond Eye

I put a 4" turbo back Diamond Eye in my truck and am very pleased with it. I bought the kit that included the Cat delete and a flow through muffler and topped it off with a 5" ex. tip. Great sound.
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post #3 of 14 Old 10-13-2013, 08:14 PM
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I have 4 inch straight pipe from them and install was straight forward and all brackets were included. Excellent value.

2012 f250CCLB, 285/70/17 on vtec wheels
Mini maxx, weight reduction pipe, egr block plates (to be installed)
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post #4 of 14 Old 10-14-2013, 12:20 AM
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I have the 4" turbo back setup with the muffler delete. I love the sound of it so much that I crack the passager window to listen to it. I don't know if you would run the delete but it has to be cut to size for fitment. Otherwise the exhaust mounts up with out any problems.

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02 F350 7.3 (Learning About It All)
SCT Tuner, 4" SS Turbo Back No Muffler.........
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post #5 of 14 Old 10-14-2013, 06:55 AM
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I've got it on my EX, also the 4inch from the turbo out.
Great performance and sound - no CAT either for the 7.3
But only complaint is it does have a bit of drone at highway speeds that resonates through the EX. But I could probably fix that with some sound mat.
Other than that - I like.



2003 EX, 7.3L 4inch Lift, Nitto Trail Grappler's, KMC XD Spy's
216k Miles, Currently 605tq, 312hp

Last edited by AzPatMan; 10-14-2013 at 11:18 AM.
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post #6 of 14 Old 10-14-2013, 11:14 AM
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i have installed two diamond eye systems both have been great kits and install was easy.
straight pipe 4 inch on my truck and 4 inch with muffler for my dads.

i would stay away from mbrp, as of late they have had quite a few issues with fitment.

alligator performance has
4 inch diamond eye straight pipe 230 or muffler system is 260.
so not expensive at all and it is a great kit.

99.5 f250 7.3 4x4 258k
PHP Phoenix, S&B CAI, 4" TBE, Hpx, Stancor, RR Billet Wheel, AIH Delete, Autometer Gauges, Leveling kit, Transgo kit, Warn Hubs, Int'l Up-Pipes, RR IC Boots, Non-Ebpv Pedestal, High Flow Outlet, RR OCR, 08 Tow Mirrors.

Dad-2000 7.3 109k miles, Autometer Gauges, Superchips 1705, AIH Delete, 6637, 4" TBE, BD Billet Wheel, TruCool Max
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post #7 of 14 Old 10-14-2013, 03:46 PM
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Not exactly the same but I had a 5" with muffler on my 6.0 and it sounded awesome. The install was pretty easy and if I remember right it was the only kit that offered a full 4" downpipe.

2004 F350 6.0 egr delete, arp studs, sinister coolant filter, 03 turbo, sct "bama" with looney tunes by Vivian

SOLD - 2003 f350 6.0 with 08 motor
5in diamond eye turbo back

SOLD- 1999 f350 7.3 with zf6


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post #8 of 14 Old 10-15-2013, 03:20 AM
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Quote:
Originally Posted by blue99stroker View Post
i have installed two diamond eye systems both have been great kits and install was easy.
straight pipe 4 inch on my truck and 4 inch with muffler for my dads.

i would stay away from mbrp, as of late they have had quite a few issues with fitment.

alligator performance has
4 inch diamond eye straight pipe 230 or muffler system is 260.
so not expensive at all and it is a great kit.
what was the sound difference between muffler/no muffler?

99 f250 4x4 7.3 php tunes,20's
01 4x4 cc srw 7.3 550hp BTS trans
02 excursion LMTD 4x4 7.3
95mustang gt,86 5.0,03 gt
allis chalmers 185-d
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post #9 of 14 Old 10-15-2013, 07:54 PM
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my truck is just louder compared to my dads with the muffler.

i think my dads sounds good if you dont want the loud straight pipe sound.

i was surprised even with the muffler you still hear more whistle than stock and it sounds deeper and is a little louder.

99.5 f250 7.3 4x4 258k
PHP Phoenix, S&B CAI, 4" TBE, Hpx, Stancor, RR Billet Wheel, AIH Delete, Autometer Gauges, Leveling kit, Transgo kit, Warn Hubs, Int'l Up-Pipes, RR IC Boots, Non-Ebpv Pedestal, High Flow Outlet, RR OCR, 08 Tow Mirrors.

Dad-2000 7.3 109k miles, Autometer Gauges, Superchips 1705, AIH Delete, 6637, 4" TBE, BD Billet Wheel, TruCool Max
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post #10 of 14 Old 10-15-2013, 09:12 PM
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I did alot of research on these forums before I bought my exhaust system in June. I learned that it all boils down to this:

For normal driving and towing, the performance difference from the stock 3.5" system to a 4" system is huge. The performance difference from the 4" system to a 5" system is rather negligible other than the sound/tone unless you run your truck near its limits such as racing or pulling where every little bit counts and you are running a larger turbo and injectors.

I decided to go with a Diamond Eye 4" stainless steel turbo back exhaust kit with muffler. I have a couple of friends who went with a straight pipe and ended up buying a muffler due to the whistle which is cool most of the time but annoying when driving through a quiet campsite or neighborhood late at night. I left the CAT off but held onto it in case I ever move to a place where I need to have one.

The attached pictures shows the difference between the stock and 4" system. It installed really easy in my driveway. I had my daughter help with installing the first pipe off the turbo, she held it up from below while I loosely installed the v-clamp to the turbo. After that, it was no problem.

It made a very noticeable difference in my EGT's when towing plus it sounds awesome when under load.
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2007 F-350 W/Lariat package
4x4 6.0l diesel engine
Leveling kit and 35 inch tires
Coolant Filter kit
EGR Delete Kit
Glowshift Gauge Pillar Pod (EGT, Trans Temp, Fuel Pressure and Coolant Pressure)
Fuel System Blue Spring Upgrade
SCT Tuner
Diamond Eye 4" stainless steel turbo back exhaust kit
ScanGuage II
Zoodad Mod
Backup Cameras from Tadibrothers.com for both truck and 25' Travel Trailer
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