Which Tubi to buy

For the 328, there are two flavors of Tubi, regular and race. I'm sure the race one is louder. Which one do most guys get? I want to replace my stock muffler with a louder one, but not obnoxiously loud. Regular and race are the same cost.

Also, my searches indicated that some of you opted for an x-ost muffler, but I can't seem to find where they are sold. Are they history?

 

i have a pdgough exhaust fitted on my 328, loud

https://www.pdgough.com/

 

I have one of these on my 308. Did you go for the Standard or the Uprated?
When I spoke to them they steered me away from the Uprated as they said it was too loud and it would become tiresome. I was also aware of some owners getting rid of the Uprated systems in favour of the Standard one, for this reason.

 

"I want to replace my stock muffler with a louder one, but not obnoxiously loud."

IMO, any of the aftermarket "performance" mufflers I have heard in various 3x8's are too loud if you're going to spend more than maybe an hour in the car at a time. Heck, even the stock system is annoying if you're spending all day in the car! I drove my 328 across the US 3 times and needed earplugs to deal with the noise (12-14 hours behind the wheel each day).

FWIW, don't be shocked if you fit a performance muffler and find that the dyno indicates the difference is just more noise...and maybe less power. Not saying the less power applies to a Tubi - never did a dyno test on one but I have seen it on other performance mufflers vs stock. Including a straight-through muffler - that you could drop a golf ball through - that produced less power than a stock "it must be restrictive because it's quieter" muffler.

 

Thanks Mike. I won't ever take a trip in my car. It's just for a fun drive on a nice day, so I'm not worried about being annoyed by the sound. My intention is to keep the stock cat and just swap the muffler, so I'm not expecting a performance gain, just looking for a more aggressive sound.

 

That won't fit a US-spec car with catalytic converter.

 

To clarify, my question is which Tubi, regular (loud) or race (louder) do most people get? There are plenty of Tubi sound clips to be found, but nobody ever says which one they have.

 

I have a regular Tubi on my 1984 Euro 308 GTS QV, the QV Tubi is the same exhaust that fits a Euro 328 (no catalytic converters). It's plenty loud already, I'd prefer a bit quieter exhaust to be honest. I always wear ear plugs if I'm going to be doing any period at highway speeds.

Gordon

 

hi Andy,
sorry don't know which but its Loud, have standard in garage if i ever want to put it back on, never done so yet.
sounds great, pops & bangs like a Ferrari should

 

because most don't know which one they have, I have a load and I did not even know that and it's only load at high rpm, it has an awesome backfire sound...

 

Yes, you're probably right. I'm also starting to think that the "race" version means a two-in style for cars without cats, and regular version is for the US/Japan cars with cats. My confusion comes about because of what is shown on Vivid Racing's product page:

Image Unavailable, Please Login

 

I believe there is only one Tubi that fits a US car, I have it, and its the best aftermarket exhaust built for a 328 , I also have a test pipe . The sound is period correct, and its not to loud whatsoever. Mine has lasted 21 years so far. The quality is second to none. You can drive your car all day long without any problem.

Thank you

 

No: both the "euro" (actually: "non-catalysed" exhaust, with two entry tubes into the silencer, one each side) and the "catalysed" exhaust (US/ Australia / Japan / Switzerland-Sweden) do indeed exist in the "standard" and "race" version.

See enclosed link, which is explicit: each reference had a "race" variant, same part number but with "R" at the end.

https://www.scuderiacarparts.com/aftermarket/ferrari/328/ferrari-328-exhaust-system-by-tubi_14973

Rgds

 

Thanks! That answers it.

 

I don't have cat's and mine looks like the one on the right top of the picture, the race one.

 

If my memory serves me well (??) only the "innards" are different between the "Standard" Tubi and the "Race" one (this for each version: the one for car with cats (single pipe entry in the middle) and the one for car without cats (two pipes entry, one each side of the muffler). The "Race" one has less restriction devices inside.

Rgds

 

I have a new question - is replacing the muffler a relatively easy DIY job? I don't have a lift so I'll have to lie under the car while it's on stands, and will be doing the job by myself. Are all the attachment points accessible? Any problems with rusted bolts that I'll likely encounter?

 

IF they've been in place for years, rusted exhaust system nuts/bolts will probably be your only problem - assuming the new muffler system fits as advertised. I would be prepared to experience breaking several fittings - intentionally or unintentionally - when trying to remove them. Penetrating fluid may help - my personal experience is that the stuff is a marketing ploy rather than of any actual use for seriously seized fittings but several days of application prior might be helpful. The heat from the flame wrench (oxygen-acetelyne torch) is the ultimate seized nut remover but you can also use a nut splitter or just a socket/large breaker bar and break the bolt itself. In any case, figure on replacing all the associated nuts/bolts/gaskets.

 

I did it, on an "Euro" car, and it was "not very difficult" BUT:
1. you really need to lift the car in a way or another: even if it probably could be done with the car on stands, having access to a lift would be much better because...
2. doughnut gaskets on the "entry tube" (into the muffler, and between the intermediary pipes and the catalytic converter) may be rock solid due to age, heat, etc, so you could have to exercice some strength on the exhaust line assembly here and there, but not with too much force on the intermediary pipes and manifolds, otherwise something might break; to do it properly lying under the car would not be easy...better be kneeling or standing, with the car on a lift.
3. you will need to put some penetrating oil, etc...of your choice on the hooks and bolts to which the muffler is suspended, otherwise they probably won't budge; this should be done a week before starting to work, and repeated.
4. you need to decide beforehand if you will keep the catalytic converter or change it for a test pipe; and you'll need new doughnut gaskets too for reassembly.
5. normally, the new muffler should be easy to put in place, but you might need a bit of fiddling with "play" or "slack" in the assembly for it to find its natural place. One thing is sure, there should be not too much tension/pression on the incoming exhausts tubes (intermediary pipes and manifolds) and both sides should be under the same forces, otherwise something might break; it's not too difficult to do, but must be kept in check until you are satisfied that both exhaust sides are submitted to equal forces/tension, and that nothing is submitted to too much tension/pressure.

Rgds

 

Thanks for the advice guys. I'll give some thought to attempting it myself, but may decide to have my shop do it since I may be taking the car there soon for an unrelated issue.

And, I received this sad reply to my inquiry about the Tubi mufflers at Scuderia Car Parts:

"unfortunately we no longer supply Tubi due to their incredibly long lead times - in some cases as much as 6 months"

I hope other suppliers aren't facing the same thing. I believe Champion is the official Tubi importer in the US. I'll give them a shout to see what's up.

 

Absolutely this.
I fitted mine with the car on axle stands. Lining everything up without stressing joints/manifolds etc. was not straightforward & it was not helped by the sheer weight of the system.

 

I bought my Tubi full system (both headers, connecting pipes, no cat muffler, for Euro 308 QV, regular not race) in 2014 from T Rutlands, and at that time they had it all in stock and for significantly less than any other vendor I spoke with.

Gordon

 

Thanks Andy. But yours is a two-in Euro version, correct? Mine would have a single inlet, attached to the catalytic converter, so I would think that getting things lined up would be somewhat simpler. Nevertheless, what I'm reading so far isn't terribly encouraging.

 

Sorry, I didn't mean to discourage you!
Yes, my exhaust has 2 inlets. It was fiddly but it is definitely do-able, like all these jobs, if you take your time & stop for a rethink if it isn't going to plan.
I've often stopped mid-job, posted up questions & pictures on this forum, within 30 minutes I back at it and got it done! The community on here bend over backwards to help, there is so much knowledge.

 

No worries at all. I'll probably end up giving it a go. Maybe it's just a two beer job.