Well finally going to replace the stock exhaust on the truck in my sig. already decided on stainless. already decided on a 4" no cat, with a muffler. but who makes the best one?

 

Well, I'm not sure who makes the "best" one i have a buddy who always seems to go mbrp... but i went with diamond eye and thought it was just fine, no trouble to install full kit... its all gonna boil down to what your willing to spend I think... good luck

 

I got mine from Tymar Performance think it was MBRP but not sure. I was very impressed with the ease of fitment, way easier than I was expecting. Cutting the down pipe was easier than I expected too. I didn't have access to a porta power so massaging the floor board / fire wall was the hardest for me, wouldn't have been so difficult if I was able to get the truck up off the ground for more leverage.

 

Grand Rock if you have the $$$
Diamond Eye
MBRP

 

Give Dale at Tymar a call. He could help you choose the right one, but also order his dp with the kit.

 

Ive heard not so good things about fitment with the diamond eye. so went with MBRP 4" stainless system from clay.

 

I've installed both in my personal OBS trucks. NOT impressed with the MBRP. Increased in-cab noise x5. I actually hated it. Sound from the down pipe resonated in the cab way too much. Traded that truck in for my current 97' F350 three weeks ago.

The Diamond Eye I just installed yesterday into my new CC F350. Much less noise in the cab . In fact, its no louder than the stock setup inside. Very nice whistle from the turbo at cruising speeds though. IMHO, it fit a little better than the MBRP. Either way, the install is a PITA with having to beat the firewall back, but IMHO, the Diamond Eye was a lot better in my trucks. Both tone & fitment.

I also have a Diamond Eye in my 01' Excursion. Very simple install in a SD truck though with the added room to fit it. Again, no louder than stock inside the cab.


***** No matter what system you go with, plan on beating on the firewall a lot to get it to fit. And, I mean a lot. A porta power will go a long way in helping this to create the room you need a lot faster than beating it yourself. So, for someone to say that one fit better than the other, I have a feeling, they haven't tried the other. All of the systems will require a good amount of clearance. Take one look at the stock DP and you will see what I am talking about.

 

What makes the Diamond Eye dp quieter in the cab than the MBRP? I put a MBRP 3" dp on my truck and I also noticed the increase in the in-cab noise. My son-in-law is gonna get a Diamond Eye for his truck, so I'm anxious to hear the difference. I'm thinkin about wrapping my MBRP dp.

 

Well, in my case, I started with the Excursion. I run a 4" DP with it to a 5" exhaust in it. I saw zero difference in sound over stock on that rig.

That sold me enough to install it on my F350. I did however, wrap the upper end of the DP with exhaust wrap. I wasn't taking chances. No difference in tone in the cab.

Compare that to the MBRP in my 96' F250. I was so unhappy with the sound that I took the stock DP heat shield off and hose clamped it to the MBRP DP to try to reduce the sound. It made a very slight difference, but no where close to what I was hoping for. I disliked it so much that I dreaded long trips in that truck. It was annoying.

My F350 is no louder than stock in the cab, but has a good tone otherwise. Sound at the tip is basically the same as the MBRP.

 

That MBRP is coming out of the truck I put it in and going in another truck, so I'm gonna wrap it good this time with some good exhaust wrap and see if it helps.

 

I don't think the exhaust wrap did much of anything. Especially based on how little the older heat shield did when I wrapped it around the MBRP downpipe.

But, if you want to, I used the DEI exhaust wrap stuff that is good to 2000 degrees with direct contact.