Considering Tubi LM exhaust for the f40

Here's what I see....
I think I see Cats and Tubi Sport mufflers. A very civilized set up. a good 30 HP over stock with a slight loss in low end torque. Replacing the Sport mufflers will bring back the sound and low end torque.
I see you are also missing your upper heat shields and the Tube that cools the waste gate.

 

zsnnf:

Hmm... I didn't THINK they were cats, but maybe they are the sport cats. If so, then I'm REALLY exited about feeling/hearing the diff with the straight pipes. I'll report back.

And I'm not really "missing" those pieces, they are in my garage and not currently on the car. But since you bring it up, I'd love some input as to how necessary they are. I see some people run with them, some without. I wasn't going to think about putting them on until I'm done exhaust tinkering.

Steve

 

Steve,
I think you're right about your car not having Cats. I have attached a pic ot Cats off the car. You will notice the thermocouple is mounted ahead of the cat were as on your car it is after. You may also notice the heat shield crimped around the cat. You can also see the A/F sender and the test port as well as the thermocouple bung.
The second picture is a tubi Sport Muffler as on your car and the third is LM pipes that have been thermo coated.
I hope thes help.

Rick
PS I see no reason to not run the shield and cold air tube to the wastegate. Obviously there is less heat back there without the cats, but I can't see how helping keep heat off the back lexan would be anything but good.
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Rick:

I see your shield and wastegate air tube are CF? I think mine are the silver coat stuff. Any source for the CF versions? They look killer!

Steve

 

If you run the car without the heat shield, you will ruin your lexan rear window. Put a temp sticker on the plastic as I have, you will not believe the temperature the plastic gets to. Coating the pipes is a waste of time. 304 SS needs only to see about 500 TO 600 dEG f to cause intergranular corrosion. Coating it only hides the problem. Even with the coating they will get to that temp. A proper exhaust system is made out of 321 SS or inconel. I wish that the guys at Carobu would make a proper system for the F40. An exhaust system wrapped in ceramic is the proper option for reducing underhood heat. I have had to reweld my cracked Tubi three times already. They are just made from poorly selected materials. I will build my next system from the Burns Stainless catalog. Remember all of the 355 cracked header problems, it is just a matter of time before all of the F40's suffer the same problem.

 

Look under the silver

Rick

 

have any of you weighed the stock cat and stock muffler vs these straightpipe and aftermarket systems?

i bet you save at least 60lbs going to straightpipes
imagine a full inconel system? think of the advantage on an already super lightweight car. you guys need to do more weightloss the CF crap is way too heavy

and what of the turbo manifold, is it cast iron or tubular on the f40?

- Ben Martin

 

Apologies on reviving an "old" thread........but can I get some feedback on specifically Tubi LM Pipes with cats and without cats?
Do theses pipes bolt directly to the cats with the option of bypassing them as well? I've been reading all the threads but find this topic still rather confusing.

I'm looking for something more middle of the road. Not ear peircing loud but louder then with the stock set up.

TIA

 

Kuzi,

you can go both ways...most just bolt the LM pipes on after the cats...great sound !

Now, some have gone completely banzai and installed cat bypass pipes as well as LM pipes...essentially a straight pipe system all the way.

I think Frefan (mike) may have done this, pm him he is a nice guy and will answer all of your questions. I know Dave Helms did his service, and is excellent (you can contact him for a bastion of knowledge)

Jas

 

Jas, do you happen to have a pic of an installed LM pipe to the cat? Perhaps on your car? As I understood it the three tips are all round exiting the rear of the car.

Is the noise a bit louder then stock, without the pitfalls.....eg loss of low end torque?

 

You shouldn't lose any low end torque at all. The only way I could MAYBE see losing some is if you remove the cats and don't get a tune to update the ECU.

I have heard a few Tubis, all kinds, they all sound so good!

 

I love mine

its pretty dam loud

I always step off the gas when I see a Cop car & I dont hit it too hard in the AM

but I think you'll love it

 

I have Quicksilver pipes on my F40-have only heard positive comments from those that've heard the car-perhaps Issac would comment on the sound of my system as he's heard it several times as have others in the MI crew of F-car owners...

 

Tubi LM pipes William? With or without cats?

 

LM pipes, no cats, she's a flamethrower

 

Here is the set up I have installed on mine.
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Pics of the quicksilver will follow-I'm sure Issac will post 'em. I'm still hampered in that department. They're chromed and straight off the cats. Never heard it except from inside the car-hard to be objective. No flames, I think. gurbled off throttle-no huge pops as I hear with my RUF w/headers and unbaffled muffler...

 

concur with williamh, no cats with LM pipes is awesome sound; recommend you keep off the gas around cops. really hard to sneak out of the neighborhood without everyone knowing about it. WOT is very loud. A friend with F40 no cats/LM pipes passed me on the freeway, I was in my 575 with the windows down, I was just cruising and not really paying attention to what was happening behind me, and when he passed it scared the holy $%^ out of me. Its a sound you hear and feel. I can only imagine what other drivers must think. I suspect you could pass someone at WOT and literally scare them right off the road.

However inside the car it fairly quiet and it just doesn't get any better. Off boost its quite too.

I first ran LM pipes with cats, was a very nice improvement over stock, certainly not dramatic by any means. Removing cats made a HUGE difference in sound. If you don't like it, you can bolt on a tubi muffler yourself, its very easy to do. No cats/tubi muffler is a nice compromise between cats/LM pipes and no cats/LM pipes.

Proper cam timing solves any torque loss concerns. You can have that done at the next belt service.

I might have a sound clip around if it helps.

 

I would love to hear that beautiful thing rip down the street

 

Kuzi, here are pics you wanted,
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Jas, looking good!

So that is the Tubi LM Pipes connected to the OEM cats correct?

Thanks everyone for the responses.

 

correct !

 

Kuzi,

There are several manufacturers of sport exhaust systems: X-host, Capristo, Quicksilver and Tubi among them.

Personally, I have always used Tubis because their affiliation with Ferrari, and a decade ago when I discovered that Ferrari SpA trusted them as their F1 supplier, I was sold.

I have used three different systems from Tubi over the years:
- Tubi Sport (muffler) system in stainless steel
- Tubi LM pipes in stainless steel
- Tubi LM pipes in inconel

The latter system is on my car right now as per the attached images. In general terms, the point of a sport exhaust is to dissipate heat, reduce weight and increase sound quality. I can tell you as a long-term tester of all the systems (including driving my first F40 on its factory system), the Tubi LM pipes in inconel accomplishes the aforementioned best without a doubt. The car runs cooler, this system is lightest, and the sound.... oh, the sound. Quite different from the LM pipes in stainless whichds harsh and 'tinny' by comparison. Inconel has the effect of transmitting sound quality in much the same way as the old-chool mild steel did. Fabulous. I listened to a factory F40 LM with inconel pipes and I saw the light.

Cats - a word of caution here whilst reccommendations are being dispensed...
The USA F40's type F120A engine was designed with a different engine management system from that of the European cars, albeit also supplied with a Weber-Marelli IAW unit. With the cats off, once you open the throttle, the unit senses that the pressure buildup to the wastegate is too rapid and you will experience a sudden "shutoff" (a rather annoying and perhaps embarassing occurence that no doubt will happen exactly when you are not prepared for it with all manner of consequences) as the system struggles to compensate and does what it was designed to do. Oh sure, the experts will tell you that "adjustments" can be made, but it will always be a "compromise" and the car will not (in my humble opinion) operate to peak efficiency, performance, and reliability as it should. Those that have run their cars with cats off for any significant length of time know exactly what I am talking about.
Furthermore, whilst the proponents of "cats off" will tell you what a lot of fun that big sound is (and they DO have a point mind you), I will not hesitate to suggest that it will create quite an obnoxious "look at me" effect that will get you tickets and rolling eyes, rather than thumbs up. After all, the car will mainly be used on the street and perhaps you are looking to share it with others and entertain them, rather than annoy them. Of course, if you ever took a long drive with the cats off it would get old real quick, and most passengers will be left wondering why oh why does this drasted thing have to be SO loud . In my own case, when my wife is with me in the car - not often I must admit as she is usually upstaged by my sons or daughter - I actually WANT to hear what she is saying. I have ridden in an F40 with no cats and the driver had to yell at me.

I can only reccommend that you leave the cats on. Trust me it is plenty loud with cats on & LM pipes and im sure youll be more than satisfied with that.

Either way, there are lots of choices here, and you must make your own, so have fun doing it,and enjoy that Ferrari Supercar!

Joe
www.joesackey.com
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