355 tubi

Tubis are very popular on the 355. I personally prefer the Capristo exhaust on my 97 355 spider with test pipes and bypass valves wired open! It is pretty loud but sounds unbelievable. Like a true F1 car at higher rpms! I have scared the living crap out of people walking down the street when I passed them...
gordon

 

I have Tubi on my 95 F355b and love it!

 

Personally, I like tubi's best on 355s but the performance gain is not noticable. I've seen reports of 20 hp gains and I've seen reports of slight loss (maybe my a competitor "shrill")?

But you'll feel like your going faster as you scream towards the redline

 

HP gains can be found in the cats, noise gains are in the muffler.

 

I consider a Tubi as mandatory equipment for a F355. Especially the Spiders.

When you own a F355 you've bought for the look and the sound. Not having a Tubi gives up 1/2 of the experience IMVHO.

 

Before buying/installing a tubi, one should always consider what you use the car for. If it is a fun toy, then a tubi is great. If you drive the car very frequently as a daily driver, or expect to hold a conversation with a loved one, then a tubi might not be the best idea.

I have a tubi, and when the car was a "frequent flyer" I hated the tubi. Now that I use another car as a daily driver, I appreciate the tubi a lot more.

Just food for thought....

Dave

 

Agree with that had a Tubi on my 355 sounded great no real difference added the HP Cats and Gruppe M air intake that makes a difference to throttle response but the claimed HP improvement I dont think can be felt IMO

 

Love my TUBI on my 96 355B..Wouldn't leave home without it!!!

 

On deciding which aftermarket exhaust to put on a 360 coupe is one better than the other or more pros than cons (tubi, capristo, strebo)? Also, what about changing out the cat. converter to high flow?thanks, steven

 

I also have the same formula on mine. They are Tubi exhaust+ Gruppe M Intake system + then just installed Race Pipes instead of stock Cat.

Sweeter, Louder sound and a little gain on torque she got!
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As soon as you talk 360 (instead of 355), it seems like the majority choice is Capristo. There's a ton of threads on this- but the sound of 355 and 360 are different in Tubi's. Of course it's all personal preference and what other "goodies" you have in the mix.

Just a "heads up"... you need a 360-specific thread

Eric

 

Instead of test pipes, put on a set of Hyper Flow cats. This way you get the best of both worlds. You get the performace and sound while still keeping the air clean.

 

I had the Tubi on mine and for a sunday blast its great

Then I started to use the car more- its not so exciting then!

really dreadful BOOMING at between 3/4 K in the cabin that made the drive very unpleasant.

So if you do more than a few miles get something else!

 

I installed a tubi on my 97 355 and loved it. The sound through our local tunnel was just like an F1 car. I installed TSI air cleaners (i.e. K&N) also. I did not have cats, but after the installation, it seemed like the car did rev a bit more quickly and I had less time between shifts. I believe Tubi mentioned 15 or so HP at the time I purchased. One thing for sure, the stock 355 muffler is a beast and has no business on a ferrari.

The Tubi on the 355 is also quite a bit lighter. I don't recall the exact figures, but I think it was on the order of 20 or 25 lbs.

Ray

 

Agree do the Tubi and the Hyperflow cats and you will find throttle response improves dont think any noticable HP gain.

 

SHOCKED!!!! Do people still buy Tubis for 355s LOL!!!

 

The sound doesn't change much with aftermarket manifolds but the power does.

Here's a dynograph from Lusso64's car.

There's a few people on the forums that have the full setup. Talk to Gordon on here, I know he has the exhaust and manifolds and I'm almost positive he has cats or pipes but I may be wrong.

Red line is without the manifolds blue line is with.
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Seems like the NA performance manifolds add on what a Hamann chip would. Here is a dyno sheet that i had done last month with standard manifolds and straight pipes and level one Capristo. Also with Hamonn chip that adds a little but re-maps the fueling. So the NA manifolds look good if ya consider that a standard 355 is around 315ish,whp. Would be good to add the chip to the above car set up or add he NA manifolds to my set up to see what increase there would be.
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If your talking hp per dollar and not just improving the sound, is the ECU swap/reflash the ticket on 355's? I recall reading threads about it and also remember the guy in EVO (Brit Car mag) who had one long term saying its night and day. Just my two centavos!!

 

Not sure which company you are refering to, but there is a company in the EVO magazine called DMS automotive in the UK.

They are ECU tuners and my 355 ECU has been remapped by them.