Notices
Ferrari Discussion on everything Ferrari related; F40, F50, Enzo, F430, Testarossa, to the Ferrari 599, 458

Does the 360 have a valve in the exhaust?

 
  #1  
Old 08-26-2008, 11:10 PM
emotors's Avatar
Registered User
Thread Starter
Join Date: Aug 2008
Location: Lafayette, CA
Posts: 20
Rep Power: 0
emotors is on a distinguished road
Does the 360 have a valve in the exhaust?

Just got a '99 360 F1 and dont know much about them. Under hard acceleration the car suddenly stops purring and starts screaming. Almost sounds like something opens up in the exhaust. Does the car have a valve in the exhaust that opens at a certain RPM like the z06? If so, is it possible to always keep it open, and is it a good idea? Any help will be much appreciated.

P.S. The car has what appears to look like a regular stock exhaust.
 

Last edited by emotors; 08-26-2008 at 11:22 PM.
  #2  
Old 08-27-2008, 10:07 AM
Join Date: Jul 2007
Location: WI
Posts: 1,415
Rep Power: 68
DynamicMotoring is on a distinguished road
Yeah, there are valves in the exhaust. Variable valve timing also makes the sound change.


Good call Greg, Im dumb!
 

Last edited by DynamicMotoring; 08-27-2008 at 02:05 PM.
  #3  
Old 08-27-2008, 12:44 PM
Gcalo's Avatar
Registered User
Join Date: Oct 2004
Location: N Calif
Posts: 2,215
Rep Power: 105
Gcalo is a jewel in the roughGcalo is a jewel in the roughGcalo is a jewel in the rough
Originally Posted by emotors View Post
---Almost sounds like something opens up in the exhaust. Does the car have a valve in the exhaust that opens at a certain RPM like the z06? ---
The 360's have valves on both sides of the muffler. They open at somewhat above 1,500 RPM.

They are controlled by vacuum and there are only two purposes for them:

a) To keep the SPL's (noise level) down near idle so the car can pass most state's noise limits

b) to recycle gasses w/in the muffler so they burn more completely at low RPM's.

You can remove the vacuum hoses to them and plug the hoses with golf tee's so the valves stay open all the time.

Then you will then notice the high sound output at all times.
 
  #4  
Old 08-28-2008, 07:09 AM
Registered User
Join Date: Feb 2008
Location: Europe
Posts: 86
Rep Power: 15
60Valves is on a distinguished road
Originally Posted by Gcalo View Post
You can remove the vacuum hoses to them and plug the hoses with golf tee's so the valves stay open all the time.

Then you will then notice the high sound output at all times.
If you drive in an area with a lot of traffic, plugging the valves can be grueling on the ears after 15-20 minutes.
 
  #5  
Old 08-28-2008, 11:23 AM
Banned
Join Date: May 2008
Location: Michigan
Posts: 352
Rep Power: 26
vk430gt is on a distinguished road
Originally Posted by 60Valves View Post
If you drive in an area with a lot of traffic, plugging the valves can be grueling on the ears after 15-20 minutes.
Not for me
 
  #6  
Old 08-28-2008, 02:06 PM
Gcalo's Avatar
Registered User
Join Date: Oct 2004
Location: N Calif
Posts: 2,215
Rep Power: 105
Gcalo is a jewel in the roughGcalo is a jewel in the roughGcalo is a jewel in the rough
Originally Posted by 60Valves View Post
If you drive in an area with a lot of traffic, plugging the valves can be grueling on the ears after 15-20 minutes.
It can be but it's worse with a toobee muffler!
 
  #7  
Old 08-28-2008, 03:03 PM
emotors's Avatar
Registered User
Thread Starter
Join Date: Aug 2008
Location: Lafayette, CA
Posts: 20
Rep Power: 0
emotors is on a distinguished road
Just unplugged the vacuum lines. Car sounds AWESOME. No need to spend $5k on exhaust. Thanks a lot for your help. Much appreciated!!!
 
  #8  
Old 08-28-2008, 03:14 PM
Gcalo's Avatar
Registered User
Join Date: Oct 2004
Location: N Calif
Posts: 2,215
Rep Power: 105
Gcalo is a jewel in the roughGcalo is a jewel in the roughGcalo is a jewel in the rough
Originally Posted by emotors View Post
Just unplugged the vacuum lines. Car sounds AWESOME. No need to spend $5k on exhaust. Thanks a lot for your help. Much appreciated!!!
Absolutely.

Remember that after it fully warms it will get a bit louder but who cares?

You will have to come by sometime to show me the car.
 
  #9  
Old 08-28-2008, 11:08 PM
Registered User
Join Date: Mar 2007
Location: -
Posts: 2,607
Rep Power: 119
996TTDave has a spectacular aura about996TTDave has a spectacular aura about996TTDave has a spectacular aura about
Originally Posted by Gcalo View Post
It can be but it's worse with a toobee muffler!
My toobee exhaust creates the most amazing sound i have ever heard a car produce

I'm a huge advocate for tubi exhaust for the 360!
 
  #10  
Old 08-28-2008, 11:19 PM
emotors's Avatar
Registered User
Thread Starter
Join Date: Aug 2008
Location: Lafayette, CA
Posts: 20
Rep Power: 0
emotors is on a distinguished road
What if I get rid of the stock muffler and just install a straight pipe from the cat to the tip? Has anyone done it? Or heard it? Good idea, bad idea?

P.S. I like loud and tend to straight pipe everything I get.
 
  #11  
Old 08-29-2008, 10:20 AM
Gcalo's Avatar
Registered User
Join Date: Oct 2004
Location: N Calif
Posts: 2,215
Rep Power: 105
Gcalo is a jewel in the roughGcalo is a jewel in the roughGcalo is a jewel in the rough
Originally Posted by emotors View Post
What if I get rid of the stock muffler and just install a straight pipe ---
Very bad idea:

1) extremely noisey and terrible resonanvces w/in vehicle
2) you gain nothing by removing cats-you are a polluter.

If you install 200 cell high flow cats you are w/in state regs for emissions, your engine compartment will stay cooler, and you sound level and midband performance will increase.
 
  #12  
Old 08-29-2008, 10:25 AM
emotors's Avatar
Registered User
Thread Starter
Join Date: Aug 2008
Location: Lafayette, CA
Posts: 20
Rep Power: 0
emotors is on a distinguished road
Originally Posted by Gcalo View Post
Very bad idea:

1) extremely noisey and terrible resonanvces w/in vehicle
2) you gain nothing by removing cats-you are a polluter.

If you install 200 cell high flow cats you are w/in state regs for emissions, your engine compartment will stay cooler, and you sound level and midband performance will increase.

I don't want to remove the cats. I already have the high flow cats. What I was asking is if it a good idea to eliminate the muffler?
 
  #13  
Old 08-29-2008, 10:35 AM
Gcalo's Avatar
Registered User
Join Date: Oct 2004
Location: N Calif
Posts: 2,215
Rep Power: 105
Gcalo is a jewel in the roughGcalo is a jewel in the roughGcalo is a jewel in the rough
Originally Posted by emotors View Post
I don't want to remove the cats. I already have the high flow cats. What I was asking is if it a good idea to eliminate the muffler?
I don't thnik you could stand the noise!

If it were front engined the exhaust tubing itself would offer a silencing effect to some extent but it still would be loud.

Removing the muffler in a 360 would be a bit deafening!
 
  #14  
Old 08-29-2008, 11:08 AM
CaRJoE0220's Avatar
Registered User
Join Date: May 2007
Location: Maplewood. MN
Posts: 564
Rep Power: 36
CaRJoE0220 will become famous soon enoughCaRJoE0220 will become famous soon enough
please dont butcher a ferrari..... They sound so great and it sounds like you just want to make it annoying and to loud
 
  #15  
Old 08-29-2008, 11:17 AM
Gcalo's Avatar
Registered User
Join Date: Oct 2004
Location: N Calif
Posts: 2,215
Rep Power: 105
Gcalo is a jewel in the roughGcalo is a jewel in the roughGcalo is a jewel in the rough
Originally Posted by CaRJoE0220 View Post
please dont butcher a ferrari..... They sound so great and it sounds like you just want to make it annoying and to loud
Well stated.
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Does the 360 have a valve in the exhaust?


Join 6SpeedOnline
Visit our Sponsors

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.