355 cat replacing

Yes, we found that loosening the rear diffuser makes it easier. Hope you didn't get beat up too much by your car! You saved a lot of money doing it on your own though great job =)

 

Here's a video of how my car sounded with Stock Cats and Prospeed Cats - I already have Tubi on the car, hence the difference is subtle. However, my car definitely rev's much happier. There's also a nice deep bass sound which you can't really hear from this video.

http://youtu.be/c0VVVQxaOLM
Btw, if you see an ad on the video and is interesting or relevant, please click on it.

Btw, I, too have a cracked passenger side CV boot:
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This is off topic but I was wondering what the demand was for a high quality custom header for the 355? I know they go bad often and my friends 355 header basically collapsed on itself! I was thinking of building a small run and testing different lengths and sizes and tri y vs 4-1 on the dyno. I know fabspeed makes a nice 4-1 set but not sure if its worth building. What are your thoughts guys?

 

I think the biggest hole in the market is for a high quality, affordable 4-2-1 design header. It must also include heat shielding like the factoy and Tubi units. There would be a significant market for this design at a reasonable price.

 

Quite a few competitors out there.

 

Thank you for your feedback. I also believe the 4-2-1 design or Tri Y as some would call it would be ideal for the 355. I believe Ferrari only built 4-2-1 headers for their V8's until the 458. The low to mid range would gains would be excellent on a properly designed 4-2-1 header for a lightly modded 355.

 

Do you know who else makes them for the 355 besides fabspeed? Anything high quality will cost money. I prefer to use 321 stainless steel but that depends on cost and if it will come out to be affordable. Thanks!

 

Capristo and Tubi. They are both significantly more expensive than the Fabspeed. If you can beat the fabspeed price with good quality (and good dyno results meaning equal or better than stock), I think you will get plenty of business.

Define affordable?

 

If your set of cats is any indication of quality, when my header goes, you have a buyer

P.S. - I hope I didn't just jinx'ed myself.

 

Same here.

 

Thanks for your input. I would definitely look to produce a quality product and more power if I plan to design and build it. I wouldn't have it any other way as that will be the main focus. As for being affordable I believe the fabspeed price point is about right considering design time, material costs and labor. But I won't know till I start building it.

 

sorry for getting to this so late.. here is Randoms site.

http://www.randomtechnology.com/universal.html

I built new cats with their cores and am very pleased with them
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Thanks guys... I hope you didn't jinx yourself either! Still don't understand why Ferrari went cheap (as far as design/longevity) on the materials on the factory head! =( Oh well time to go the drawing board and improve on it. =) Happy Thanksgiving to all of you! Cheers!

 

did anybody here Installed these Cats?
I would really like to try them.

http://www.ebay.com/itm/Ferrari-355-2-7-5-2-95-99-High-Flow-Cat-Test-Pipes-/230362724089?pt=Race_Car_Parts&vxp=mtr&hash=item35a2b036f9

 

I've seen those before. They are made in China and are not real metallic catalytic converter cores like the hyper-flow's, fabspeed's, or prospeed high flow cats. They are test pipes that have a resonator on them. If you read carefully it says test pipe high flow. If you're looking for test pipes than that would work. Just heads up! =)

 

Thanks for the answer.

This is what i thought,the Seller does not clarifies if the Item has a Cat inside or if its empty.

I just wanted to clear this because if they were Cats they are very cheap!

 

Not that there's anything wrong with things that's Made in China...just things that are cheaply made regardless its of country of origin...right?

 

You are correct! I love apple products and they are built well and last forever and they're made in China =) Just be careful though cause I've seen some of the lower grade stainless steel from China and other places and their standards of materials are not up to par with the US or Europe.

 

What conserns me is not only the quality of the produkt but the fitting as well.
The rear side is a the flange too and this could be a problem if not fit 100%.

 

Hi Guys! I was wondering If anyone had a driver side factory header good or bad I could borrow for test fitment? I would only need it for 1 week and I will pay for shipping to me and back to you and in original condition. Also let me know if you have a 2.7 or 5.2 header. I already have the passenger side but missing the driver side header. PM me if you guys have one. Thanks! I can give you a great discount on our first batch built. =)

 

Thanks for getting back to me guys I appreciate it. The project is underway. =)

 

Hi Michael! Happy holidays to everyone! It's going along really well. I am still looking for a local 355 for doing before and after dyno testing but we have already built the jig and designed our header and are planning to complete the project and have a completed header by the 2nd or 3rd week of January. The header was designed using a proven engine/header design software. We are also looking at incorporating a heat shield with the header but first things first we want to develop a properly designed 4-2-1/tri-y header for the 355 and go from there! I'm really excited about this project. =)

 

That's great news. I was hoping someone would come up with a 4-2-1 aftermarket header.

 

I'm glad there is great interest in this. I believe there is some positive design advantages with the 4-2-1 header... more horsepower and torque in the lower to mid range power band is important for a street/road course car. In some instances if a 4-2-1 header is designed and built correctly it can also match a 4-1 headers top end in power. It's more expensive to build because it requires more merge collectors and varying pipe sizes but I think it will all be worth it. =) Happy New Years everyone!