Ya I just got the muffler a few days go (thanks buddy!) but I just need to get w/the muffler guy one day when I get time to figure out an adaptor. Muffler has 3" inlet so I may go ahead and up the catback on the 2.4 to 2.5" (vs the old 2.25") to make the transition easier...

BTW, my little brother has an old '94? H22 Prelude w/cams, headjob, bolt ons, ECU and it's a good bit faster especially up top than his BMW 540i 4.4L....

Anyway, hope to find time to get this sucker on. Hopefully I can shoehorn a big enough resonator underneath to kill any drone/resonance. Worst case, I throw it on my 3.9L Chevy Uplander work van (overhead cam plus VVT) to go w/my upcoming PCM upgrade (engine and tranny shift points tweaked ftw!!)

Jeremy

I have an 18" resonator on my custom 3" exhaust. Still tossed up if I'm gonna go with this muffler or like a hooker muffler. Either way, this dynomax Turbo has got to go

-matt

Not sure if this should have a separate thread or what but since it follows a similar principle, I thought some might be interested in this:
http://www.apexi-usa.com/products/?id=5327

i actually looked into that at one point, but it's 2x the price of VT muffler for an insert for the tip (which would look ricey as hell from the rear, imo).

If people really want to have a variable muffler and have a decent chunk of change to do it, these are the guys to see about it:



They do also have other muffler styles as well if you don't like fart cannons (I personally don't).

From an email response I got about pricing:
The Aussie dollar is about 1:1 with ours these days (was about .83:1 when I contacted them last year). So, yes, you could almost buy a full Cattman setup for the cost of the muffler, shipping, and taxes/duties... But, even with as quiet as my 3" setup is, I have still kept my eye on this for possibly in the future.

Man those prices are hilarious , it reminds me of SP's Quick Spool Valve($500) LMAO!!! Not even forged Eagle Rods cost that much lol.

Ya I thought the price would get some attention lol....Mad Max, what exhaust do you have that makes it so quiet?

I have OBX V2 (~equal length) Headers, stock cat, and cattman 3" exhaust. The stock cat is what really quietens it down. I want to get either a cut-out or a test pipe for the track though (haven't decided atm).

I just ordered one and you can see they have made some changes if you have seen the original one. It should not rattle ever with this updated design. I also got the 4L+ one.

Hmmm, mine looks like that and has developed a bit of a rattle at start up.
Whats the difference in your pic vs the older one that Streetz posted?

I think it has more of the metal foamy stuff. If yours starts to rattle I would get some steel wool and jbweld it to the inside of the flap.

This is just a little muffler update for any who are interested in the VT muffler still....I decided to install one on my little '93 Altima beater/soon to be turbo again as a project. I purchased the -4.0L unit (2.25" inlet) to complete my current exhaust setup (Hotshot tri header, 2.25" catback, metal core Magnaflow HFC and 22" Magnaflow 4" resonator).

No pics (nothing special to see) but the exhaust flow is excellent compared to the 2k2 Max variable capacity muffler I had on before and only slightly louder at idle, so near stock.

There is a little more noise output and a deeper tone when cruising steadily in the 1800-2200 rpm range with the pitch rising the higher you are in the rpm band.

There is a slight drone unfortunately even with my 22" resonator which is as long as I can physically go on the short wheelbase '93 chassis, but I'm going to give it a month or two to loosen up possibly.

My VT which I purchased from Summit racing about 2 months ago, does have a rattle at idle. I didn't bother to check for the metal absorbtion material (steel woof looking stuff) but I will just out of curiosity. I'm just a little surprised and bummed that with the little 2.4L (around 140ish whp/155wtq) I still have the rattle at idle....

After some time passes, I'll decide whether or not to throw the 2k2 Max muffler back on. I almost wish I had thrown a stock cat back on to help quiet things down but on the 2.4L, every little bit helps I guess...

So is this muffler worth getting ? My Super Turbo sounds like complete crap after 3500K and I need to do something about it

-matt

Anyone

Id still recommend this muffler, its a little on the loud side(slightly louder than Superturbo), but once cruising your nice and quiet, and light accelerations. It definitely flows alot. Get it, you can always return it if your not happy.

The only possible issue you might have is the valve flapping at idle or something, but I think that happens to mine because I have a completely free flowing exhaust, no cats or resonators, so much more velocity. I have like two VT's in my closet, one is for 4.0L or less, the other is for 4.0L or more.

I have the flapping valve as well, but Ive already grown used to it.
My car is a bit loud anyways so no biggie for me.

How loud is the flapping ?

Its all fun and dandy returning it, but every time I do that, I need to pay for another install of a muffler

They actually cover your expense, in my case I have the muffler connected with a band clamp. so I can take it off when ever I want in a matter of seconds.

In my case the flap is only when you have a little backfire, like when you let off, between shifts, or if you have rough idle or on start up when you get the initial flow.

I have the -4.0L version with 2.25" piping on my '93 (2.4L) with header, metal core HFC and 2.25" piping and mine rattles some at idle in the 1k rpm area. Also if you rev the engine, on decceleration it will rattle a bit. Of course, this is outside the car which is not where I'm sitting while driving so it doesn't bother me at this point lol...

Only alternative for me though would be to go back with some Nissan variable capacity muffler again, though after seeing a cross section of the Maxima version, it looks like a reverse turbo muffler with a valve one pipe so I dunno...

I like it so far....

FWIW, it did improve power somewhat over the Max muffler

Jeremy

The muffler is officially getting annoying.....it rattles between 700-1100rpm (cold/warm idle) and sounds like crap and isn't quiet about it. I can't tell if it has the mesh update since knucklehead muffler man welded a piece of angled pipe on the end for a tip without asking (dropped off the car).

Plus now there's no way to get up in there to fix the rattle. I hate it because the muffler is pretty nice but I'm not even sure how much help the muffler is over the turbo muffler or OEM variable capacity setup.

I'm going to give it another month and then it's getting chopped off...it's a cool product but not worth a couple of extra hp to me (NA) with the noise it makes. I wish I knew if I could buy another and not have the problem.

Jeremy

http://www.motoiq.com/magazine_artic...mean-slow.aspx

Thought some of you running this muffler or not might enjoy a nice little tech article on the VT. Eventually ditched mine (gave it to the muffler shop owner lol) and threw the old Max variable muffler back on....Dyno is on the last page but enjoy the read...

Jeremy

I seriously doubt the small drop in power was due to the flap not being fully closed. That flap opens even revving low rpms in neutral, so its impossible. Most likely the lack was the baffling itself, you cant compare a muffler no matter how advanced, to straight open piping. For a daily driver, i think the VT is the best option to provide the most CFM possible.

I agree and was wondering myself whether the way it was installed had an effect on the performance or more important to me, the rattling of the valve. I still have a 3" inlet VT in the garage that I may throw on my Uplander 3.9 work van but was wondering if turning the muffler upside down made any difference...

Anyone know?

Im getting really sick of my Super Turbo, I just cant see getting the VT with all of these negative reviews.

Yeah it's a shame considering that the VT has the same manufacturer according to the article that the Nissan OEM variable capacity mufflers have! You may end up having to go with a diesel/truck based muffer if you can find one that will fit....