355 As of now only looking to upgrade muffler...but which?

I just bought a used MS Racing exhaust that doesn’t use the bypass. Perfect for me since I have 360 challenge headers on my car - no split to Y.

 

MS Racing

 

Installed yet? The Y-pipe also helps give the 355 it’s F1 scream and the few systems I’ve heard without it seems to be missing the key pitch.

 

It is on its way from Japan. Won’t be installed until next summer as the car is put to bed for winter

 

How was the car? Did the throttle body tuning work out? I should give it a try as the last resort to fix my sticky throttle issue.

 

Did you sell it because it was too quiet with valves closed..? i want.....

 

My '95 2.7 has Tubi headers but otherwise appears to be 100% stock exhaust. My plan was to add Capristo 3 + Capristo bypass and remote over the winter when the car gets its annual.

1. Any recommendations on particular Y-pipes? Is fitment an issue when mixing and matching?
   
2. If I decide to do the Y-pipe later because I end up wanting more of an F1 pitch, how much of a PITA is that to do vs when the muffler is out?

 

i have a bradan y pipe on my 95, everything else is tubi. no fitment issues

 

http://www.ferrarichat.com/discus/messages/256120/244696.html


I don't know much about throttle tuning/syncing, but I tried my best absorb what GTO Engineering was trying to tell me. Apparently, they have an old school (but correct) manometer from a Ferrari dealership to tune the 355. The main tech used to work at a Ferrari dealership on the East Coast. So as I was driving my buddy's car back, I tried my best to pay attention to the minute details.

The car drove and idled VERY smooth. It felt like a brand new car. My buddy has 50k+ miles on his 355.

I keep mental comparisons to driving my cars, which are also 2.7, but currently with stock headers, stock y-pipe, straight pipes, and X-OST muffler or my other 355 with the same setup, but with a Capristo muffler. His car did not have the same low/mid range power my 355's have although he has after-market headers (Fabspeed) and now a straight cat-less Y-pipe (Kriessieg Spiral pipe). My experience tells me the Fabspeed headers is the culprit. Since I mostly drove my cars with the bypass valve function as stock most of the time, I chose to drive his car with bypass functioning as stock to make comparisons, although he does have a Capristo bypass valve w/ bypass controller.

The experience was pretty whack compared to my cars by a wide margin. I got nothing out of the car. Only a snippet of F1 sound towards the last 1000 RPM and you really had to get on it. Super quiet too. I guess the culprit could also be the newly installed Kriessieg Spiral Y-pipe, but I highly doubt it. He drove the car after and said the Kriessieg y-pipe certainly improved F1 sound and power vs stock Y-pipe (bypass open at all times). He drove the car again extensively the next day to make sure it wasn't placebo. He texted me he could feel the improved power and sound. When he test drove the car after me, he drove with the bypass open. Much different experience in sound than with bypass as stock. You can get some decent F1 sound out of it, but I told him there is a whole spectrum or two of F1 sound completely missing compared my setup of just OE headers + OE Y-pipe. The F1 scream isn't there and the pops and gurgles completely missing.

In short, don't put Fabspeed or any other variant of 4-1 headers on a 355 if you want the ultimate F1 pitch. I've known for years it was bad, but I didn't know it was that bad as this was my first time driving a 355 with Fabspeed headers. Those who have it, don't know what they're missing out on. You can only drive the car with bypass open to get any excitement out of it.

We are now in discussion about header replacement. It is either Tubi or Larinis. He was addicted to the 10 hp the Kriessieg Y-pipe gave, so it seems he's willing to wait for my feedback on Larinis along with dyno results. Tubis are known to give 0-5 hp, so not much power gains. But you get F1 sound preservation, durability, and looks. We're hoping the Larinis give 10-15 hp, but we'll just have to wait and see. Sound is also the other X factor. What will the Larini headers give? Stay tuned .

My Rosso 355 is running strong and superb, but I'm always after optimum. I will have GTO engineering work their magic on my throttle bodies. You're in Socal... should give them a call .

 

Pretty much. Bypass open, it was pretty damn good.

 

Y-pipes... so many to choose from. For the most part, they look relatively the same and probably produce the same sound and power ranges. The only one that seems to be vastly different in look is the Kriessieg Spiral Y-pipe. It's really a personal choice. If you want the OE look, you can do what @jimmym did and have the OE y-pipe gutted. That way, shields are still in place. The Y-pipe probably gets close to as hot as the headers, so it would be wise to have a heat containment solution. Regarding fitment issues, not many have reported problems with the brands available.

I like @INTMD8 's self-made Y pipe and GMG's. Both in looks and material choice used. 321 SS. My Larini y-pipe is pretty standard looking, but Inconel-shielded. My car is going to run like a fridge .

I don't think the Y-pipe is too difficult to install as you can get to it from the top and wheel wells when car is lifted. Doesn't have much to do with the muffler out or in. I wouldn't worry too much about installation.

 

In regards to what "sales" people know and the info they tell you... A Tubi representative told me through DM, Tubi header shields are aluminum. Others pointed out and confirmed they're steel .

I went through about 10 email exchanges with Hill Engineering "sales people" try to help @ttforcefed get the "correct" suspension components for his manual Scud ordered. They even had a "tech" respond to one of my emails citing assumptions completely wrong. I called him out on it and asked for more clarification on the assumption. They haven't responded since, even after a few follow-up emails because they know they're wrong. I can post the entire email conversation if anyone is curious to see and analyze for themselves.

 

Ken, your observation on power is interesting. The last thing that the F355 needs is to lose low to mid range power. I think I remember seeing a graph of the Fabspeed headers vs OEM which showed the OEM making more mid range power and Fabspeed headers making more power on the high end. When I was having my headers built, I had spoke with Bradan about primary tube size. He didn’t recommend 1 3/4” primary tubes for the street. My primary tubes were slightly bigger than OEM, but not by much. The 3-2-1 design tends to be better at low to mid range power. I would have a problem with the loss of power where the car spends most of its time on the street. If it was a track car, than that’s another story where the rpm’s are kept in the upper ranges most of the time.

 

For reference you can also read ad-nauseam on exhaust out here. Same exact conversation. May be useful to gather other data points etc. I often find good information in historical conversations. Just a tiny sampling. Good luck on your journey!

https://www.ferrarichat.com/forum/threads/best-exhaust-for-f355.177882/
https://www.ferrarichat.com/forum/threads/what-is-the-best-sounding-exhuast-for-the-f355.340253/
https://www.ferrarichat.com/forum/threads/which-exhaust-has-the-best-sound-for-the-f355.272151/
https://www.ferrarichat.com/forum/threads/best-exhaust-for-f355.177882/
https://www.ferrarichat.com/forum/threads/which-exhaust-has-the-best-sound-for-the-f355.272151/
https://www.ferrarichat.com/forum/threads/what-is-the-best-sounding-exhuast-for-the-f355.340253/
https://www.ferrarichat.com/forum/threads/f355-exhaust-help-tubi-capristo-or-nouvalari.474591/
https://www.ferrarichat.com/forum/threads/for-f355-leave-the-stock-muffler-or-get-a-capristo-exhaust.32798/
https://www.ferrarichat.com/forum/threads/f355-stock-exhaust-tubi.479868/
https://www.ferrarichat.com/forum/threads/f355-exhaust-help-tubi-capristo-or-nouvalari.474591/
https://www.ferrarichat.com/forum/threads/f355-nouvalari-ss-exhaust-first-impressions.628870/
https://www.ferrarichat.com/forum/threads/f355-exhaust-setup-with-the-highest-pitch-scream-howl.492037/
https://www.ferrarichat.com/forum/threads/f355-ito-racing-exhaust-japan-better-than-capristo.546064/
https://www.ferrarichat.com/forum/threads/for-f355-leave-the-stock-muffler-or-get-a-capristo-exhaust.32798/
https://www.ferrarichat.com/forum/threads/how-to-gain-alil-more-hp-on-f355.611507/
https://www.ferrarichat.com/forum/threads/f355-exhaust-help-tubi-capristo-or-nouvalari.474591/page-5
https://www.ferrarichat.com/forum/threads/loud-exhaust-on-f355.510397/
https://www.ferrarichat.com/forum/threads/would-like-to-present-f355-muffler.638504/
https://www.ferrarichat.com/forum/threads/new-exhaust-option-larini-gt2-muffler-phase-2.630277/
https://www.ferrarichat.com/forum/threads/fabspeed-vs-tubi-header-for-f355-gtb.603574/
https://www.ferrarichat.com/forum/threads/does-anyone-have-this-capristo-exhaust-on-their-f355.314369/
https://www.ferrarichat.com/forum/threads/f355-exhaust-setup-with-the-highest-pitch-scream-howl.492037/
https://www.ferrarichat.com/forum/threads/f355-exhaust-tubi-capristo-challenge-nouvalari.484035/
https://www.ferrarichat.com/forum/threads/capristo-vs-tubi.427786/
https://www.ferrarichat.com/forum/threads/f355-nouvalari-ss-exhaust-first-impressions.628870/

 

I have had Capristo level 2 with straight pipe and I think that's too high sound (my ears was ringing when I drove the car), my "new" 355 now have Tubi and its different "more" Ferrari sound. I will for next year upgrade all manifolds to Tubi + cats.

 

Capristo 2 with 2.7 or 5.2 car?

 

I can't say I noticed more power from the Fabspeed up top either, but I certainly noticed the loss down low.

 

I had for long time ago Capristo 2 with straight pipe on 5.2, it was too loud

 

I don't have personal experience of Capristo muffler on a 5.2 car, but the feedback from the experts here is Capristo muffler is louder on the low/mid end when bypass valve functioning as normal than a Capristo muffler on a 2.7 car. On a 2.7 car, Capristo 2 or 3 is pretty quiet when bypass closed. However, the F1 scream from the Capristo on a 2.7 when bypass open is unmatched.

 

Do you have a standard Tubi muffler or Tubi Evo muffler on your current car?

 

Hard to compare exhausts and headers on different cars and thinking that header choice affects power in any noticeable way. I have driven 4 different 5.2 F355 in the past 7 days and 3 of them stock as a rock in terms of exhaust and they all were different in terms of power.

Some cars are just fitter than others, and/or running right.

 

Part of the reason why I’m interested in organizing local dyno pulls to help put some speculation to rest on what parts do what.

I will discuss with him more about a compression test to see how healthy his car is. Timing belt is also an X factor, but we won’t know until his next engine out service. Plus, he should know for himself if the header change makes a difference when that time comes. Perhaps a few dyno pulls here and there to make before and after comparisons on the same car.

Considering he has his throttle tuning/syncing done, Y-pipe (10 hp), and a Capristo muffler which might be making slightly more power than my X-ost muffler, his car should have an edge on my car in the power dept. It doesn’t. The build up of power to the top isn’t as profound. My lesser setup has a significantly better driving feel. Other factor is he does have 20k more mi than my car.

Brings up an interesting point though. If I wasn’t a 355 aficionado and his 355 was my first driving experience, I would not be impressed with the power delivery or response of the car at all. Would probably move on from the car. Makes you wonder how many people sold their 355’s not knowing it ran like ass, either from engine issues or installing the wrong performance parts. From my current point of view based on driving my 355’s, no one in the right mind should be parting with their 355 .

 

I'll have one over the winter but its not likely that I'll drive it before March given snow/salt etc. I imagine someone else will have a new one on their car before then, but happy to make sure I get a driveby video of stock vs a Cap 3.

 

Interesting. The badge on the exhaust shows 4 sound options, but none ticked?