Carlito seemed to want one, so i offered it to him at cost + shipping

don't really want to go to the hassle of hacking anything to make it fit

After adjusting my fast intentions exhaust cans will clear on lowest setting of diffuser. Front bracket needs to be modified (narrowed) to fit in between exhaust pipes. Relatively minor. Dont sell just yet. I will post pictures when I'm done. Only limited time to work on it.

Nice to hear some good news on this!

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When you say modified the cans, did you mean return them to "normal," since i believe yours were modified?

Since the cans are hidden with the diffuser now. You can take a BMF hammer to the cans for clearance. :ugh2:




I hope no one does this. I bet it has crossed a few minds. :icon14:

Drivers side muffler sat about a 1/2 in lower to clear fins on nismo differential cover. I cut the fin off and raised the muffler to match passenger side muffler.

I ran over an alligator (tire tread) on the interstate and dented one of my cans on the backside. Problem solved.

Pictures please and thank you!

Well...I went by the shop this morning and there is no way the diffuser is going to work on my Z. The muffler can hang way to low. So they will be up for sale in the near future.

crap!!!!!!!

Cut the diffuser to fit around the cans. Or straight pipe it.

You can buy it from me and show me my old one armed brother! :rolleyes:

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Thanks for the offer. But I think I could make my own. Because of the cans and the diff cooler. I would have to design it around those 2 things. From the pictures I've seen on the diffuser. It mounts in front at the same spot as the diff cooler. I would have to have an opening in the center of the diffuser for the opening of the diff cooler.

I have a couple of ideas up my sleeve for having one built. The first has come with a hefty but fair price to do a custom build. Like many things if there is more than just me doing the purchase I'm sure the price would be less.

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Do yours hang that much lower than the normal TDX due to being 3"? Just wondering since secondnissan's clears minus the bracket and you say that yours won't fit at all.

Attachment 124422

Attachment 124423Here are some photos of the front bracket being narrowed. I used tin snips to cut the diffuser on the inside of the outside slots . I then drilled two sets of holes to replace the slots that were cut out. Holes are 3/4 of an inch from sides of tab. Holes are 1/4 diameter. For the bracket I used a dremel cutting wheel and cut to match diffuser width and holes. Filed down sharp edges and painted exposed metal with flat black spray paint. Hope to fit it tomorow. Debating whether I want to cut holes for the bottom of mufflers to protrude so I can tuck the diffuser up higher.

Attachment 124420

Attachment 124421

I had not thought about that and I think you nailed it. Even with an extension as posted will not work for my exhaust as I had the same idea. The mufflers are to low and there is not enough space to get to the mounting point. I'm just gonna bite the bullet and get a custom one built.

well at least you have a good template for a custom piece?:ugh2: i've still got a stubborn bolt to break loose so I can stat installing mine. though now that I know I'm gonna have to mod the brackets it's gnna be maybe next week when i can run to my buddies shop and harassing him into helping

After trying to install today it doesn't clear the fast intentions exhaust mufflers afterall. Even on the diffusers lowest setting it touches the front bottom of the mufflers. Plan is to cut a 3x3 slot for both mufflers to clear. Hopefully this will allow me tuck the diffuser up higher, might as well if I have to cut it. Wish me luck. Pics to follow.

Well after cutting 3x3 holes for the mufflers the diffuser fits. The bolts that go under the mudflaps didn't exactly line up as sent from velox. I had to keep the diffuser side brackets loose and then tighten them after the mudflap bolts were lined up. I also had to battle two stripped bolts ( one mudflap bolt ,one rear brace bolt)

One more pic

That looks good. With Carbon Fiber mufflers these cans would not even be noticeable. Me likey.

Great Job!:tiphat:

glad to see it can be made to fit without too much effort. i wonder how the cutouts will effect the airflow around the diffuser?

My guess is it won't affect it much at all. Mufflers basically fill the void and sit flush with the bottom of the diffuser.

So, today I went and installed the diffuser on my Nismo, again with Fast Intentions exhaust... this was seriously a bigger pain in my *** than I expected and for anyone with a Nismo and the TDX, I'd honestly tell you to pass on this if you haven't already purchased it unless you don't mind a bit of cutting.

1) The instructions that Velox/Verus provide are next to useless.
2) The 09-14 Nismo rear bumper does not have the same holes in it that the Base/Sport bumpers do that the diffuser uses for mounting. 2 of the 4 that are required are there, and it holds tight, but I'd prefer if all 4 were in use.
3) The Nismo bumper will have to be cut/notched for the side brackets. No getting around this. Bright side, no one will notice unless they're on their side inspecting the bottom of your vehicle.
4) As secondnissan mentioned above, you'll have to cut the diffuser to allow space for the FI mufflers to poke through. I have the carbon canisters so it's not noticeable, but I'd have preferred to not butcher it to make it fit.
5) Because of the FI exhaust, you are only able to mount the diffuser on the lowest setting. The good part is that it's still higher than the FI mufflers sit... the bad part is it makes it appear to be a huge gaping hole between the bottom of the bumper and the diffuser itself unlike how the Base/Sport bumpers are.
6) The fitment was... less than desirable; even after modifying the diffuser to fit, I had to damn near take everything apart to create enough leverage to tighten everything up properly.
7) (Back to the Nismo bumper), the rear center bracket WILL NOT FIT. Period. Let me rephrase that: The rear bracket fits, but there is too much space between the bumper and diffuser (see #5) for them to mate to one another and be screwed. I had to go to the hardware store and buy a few different sizes of screws (M8x100/120/140mm) to what would allow the rear middle to be braced.

Now, if you have a Nismo and an exhaust that has been proven to fit you'll probably have a much better time installing it than I did. Also, I don't want to make it seem like it was hard; it wasn't by any means. Just tedious and time consuming with a lot of test fit, cut, test fit again, cut again, rinse/repeat.

I'll admit that it looks good and I'll be able to test it tomorrow on the autobahn and Nurburgring since they'll have the VLN configuration :D

Nice can't wait to hear your review of it at speed.

Do you have any more photos of the diffuser? And does the Nismo bumper limit how high up the diffuser can tuck up?

I installed this diffuser on my 2014 a while ago. The install was a serious pain for me but in the end I was pleased how it turned out. Its very unique but also subtle.

If it wasn't for ClovisLotus I wouldn't totally forgot about this thread. Anyway, I wasn't able to test it at the Nurburgring prior to returning stateside but on the autobahn the diffuser worked like a charm with the car feeling stable on straights up to 140mph and planted on bends up 130mph (both cases due to catching up to traffic). On normal winding roads I noticed a slight increase in stability, but nothing significant. My aero currently consists of the diffuser, the ZSpeed front undertray and modified Aimgain canards, so yours being a bit more involved with a front splitter and rear GT wing, the diffuser would obviously be more beneficial.

I haven't taken many of the diffuser, however if there are any specific angles you'd like to see let me know and I can take some.

The current limiting factor on mine are the mufflers on the FI exhaust. For an exhaust similar to the Motordyne, or one of the OEM-styled ones where they tuck higher up into the bumper, I'm sure you'd be able to raise it quite a bit more. I'm debating selling mine with the FI exhaust so that I can pick up another diffuser with an E370, Garageline or Invidia so that it fits properly. Another thing I failed to mention previously was that due to our rear bumper being longer, the diffuser doesn't stick out as far as it is intended when used with the Base/Sport bumper; however, it does still flow naturally with the "diffuser" area of the Nismo bumper albeit unintentionally.

LOL, I was cracking because of the same thing and I figured you just forgot. Anyway, thanks for the information and glad to hear that your review is positive. I have not had mine mounted yet but have something in the works. I am having a rear diff cooler installed so I don't no if that will be a significant problem as well. I will post up here on the outcome.

Bobby, you will have to cut a hole in the diffuser for air flow to the diff cooler.

My initial reaction is the same as yours. I sent the photos you posted to Fast Intentions as Tony will be doing the install of the diffuser. The diff cooler shipped today to Specialty Z for installation. I prepared for that diffuser not working at all. If that happens it back to the drawing board. I love this chit as it is all about the journey!

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Just catching this thread...and did read through...but had a couple of clarifying questions:

Approx how much time does it take to install?
Pain factor of installing?
Can anyone confirm no issues with Motordyne E370 exhaust.

I am looking to purchase only for track use....is it really worth it?

I don't have a clue on the fitment with Motordyne but it does look like will work. The reason for most the conversation and why some of us took a chance with this diffuser is its functionality. After, I received mine and looking at how it should fit, I am convinced it will perform as advertised and that is why I'm taking significant measure to make it work.

So long as you don't need to modify anything, it can be installed within an hour.
Easy install.
It will fit the Motordyne without modification.

Any issues with ground clearance or bottoming out...going into driveways, trailer ramps, etc?

no worse than any other part of the car. with the fast intentions exhaust the mufflers actually sit below the diffuser so they are at more risk than the diffuser. backing in and out of driveways is a little suspect. I need to crawl under mine and look since i've been house hunting and taking the z to make sure i can get in and out of driveways :) much to my wifes chagrin

For folks who also had a diff cooler, how did you end up modifying your diffusers?