Best to de cat it...hehe it's sound louder
I have Tubis with Hyperflow cats.... Sound is sublime!! Wish I could post a sound clip but it wouldn't do justice, you have to hear it live.
I tried it last night...it didn't make much difference so I put it back I do have a modified EOM exhaust though....
No, definitely not. Something might get logged in a way that perhaps an SD2/3 could detect but definitely no CEL or pending code.
I thought I would chime in here ... First, disconnecting the electrical connector will not throw a CEL. But, then your bypass valves will always be open. Open bypass valves when the engine is cold may cause it to run a bit rough. Won't hurt anything, but might stumble a bit. The closed bypass valves will induce a degree of back pressure which is desirable at low engine RPM and throttle position. The back pressure actually increase the velocity of the exhaust gases which induces a scavenging effect which helps to clear out spent exhaust gases at these low RPM. At higher RPM and throttle positions, back pressure tends to have a negative effect on the velocity of exhaust gases. So, for this reason, the bypass valves open which reduces the back pressure and increases the velocity of exhaust gases. So, just as an FYI ... opening the bypass valves will actually decrease the power in lower RPM range. Honestly, it will not be very noticeable, especially if you are getting on the throttle as you are likely tending to keep you car over 3500 to 4000 RPM and the bypass valves are opening anyway. If you had some very accurate sensor devices, you will probably notice that your car's fuel economy will suffer when cruising around town at low RPM if your bypass valves are open. There are only two reasons why you want to have your bypass valves open at all times ... 1. You are tracking or racing your car 2. You want to make some noise. Regards, Steve
Steve, good luck on marketing your system. Unfortunately, I had already bought the Capristo Remote and have it installed now. Works great but of course, cost more than your system. My wife likes it quiet, I like it loud. Perfect combo.
As a newbie to 360 ownership, I find this thread interesting as I have an aftermarket exhaust which has the standard two bypass valves removed, but I can see the two solenoid valves with the electrical connections taped back. I am a bit concerned that the two "hose outets" on each of the solenoid valves are open to atmoshpere and might cause problems (or is it the fact that, as no electrical power is provided to the solenoid valves, they are now closed and therefore the "hose outlets" are also closed / blocked to the cars vaumm / inlet manifold system) ?. Hope the above makes sense (apologies for length of query) Many Thanks Cheers Ian
Hi Ian, There are two hose outlets on the solenoid. The third is a vent to atmosphere. When originally connected, the silver nipple is vent to atmosphere and the black nipples are hose outlets. One to the vacuum source the other to the exhaust bypass valve. Since there is no power to the solenoid valves, the solenoid is in the position to vent the exhaust bypass valve to atmosphere. By venting to atmosphere, they will remove the vacuum at the exhaust bypass valves (which you do not have) and cause them to open. So, the hose outlet to the vacuum source is closed and the hose outlet to the exhaust bypass valve is open. Steve Image Unavailable, Please Login
Hi Steve, Thanks very much for your clear response - I understand the system now + I think your video is great - clear and concise. If my 360 had the standard exhaust set up I would seriously consider buying one of your kits, many thanks again. Cheers Ian
I just bought a 2001 360 and had the ferrari sport exhaust put in. I haven't gotten the car from the shop yet, and will upload an audio file for those interested once I do next week. Are there any owners out there that have made the switch from stock to ferrari sport exhaust without further modifications, and what was your impression of the difference? (Yes, I should have asked this prior to spending the money, but I figured it can only help....) Many thanks
Valved exhaust systems are made for one reason only ... to minimize noise at lower engine RPM / throttle position ... and hence lower vehicle speeds. This will generally equate to the vehicle being in more urban environments where the car company feels it prudent to keep the noise level down. Although in theory, a valved exhaust system with dual modes ... through the muffler and bypassing the muffler ... is supposed to be made to have variable back pressure at different engine RPM and thereby improve torque at lower engine RPM and maximizing power at higher engine RPM is generally marketing hype. The theory is correct, but in practice with Ferrari or after market exhausts systems, the valves make not a bit of difference in the back pressure. Those exhausts valves only serve one purpose ... to allow the system to have dual modes ... quiet and loud. Or maybe loud and louder. Put a car so equipped with dual mode exhaust on a dyno and see if there is any difference. If there is, and I doubt there is, the difference is going to be insignificant ... like less than 1% ... more likely zero. Ferrari has been placing dual mode exhausts on their cars for some time now ... they make no claim in improved performance. Corvette C6 and Camaro Gen 5 have them ... no performance claims. Some after market companies make claims, but you can take that with a grain of salt. Now, after all of that ... I really like the dual mode exhaust that way I can have my car loud ... or when I desire, even louder. Best regards, Steve
I went from stock to sport exhaust on my 360 ... big difference. When exhaust valves are closed, car is louder than stock. When valves are open, car has a nicer bark to it than the stock muffler. Some other benefits ... lighter weight than stock, if you have the stock muffler it is probably leaking that white powder from the seams (if not, it will). The new muffler has the white stuff in there too, but it is new so it will be a few years before it degrades and starts to leak. Overall, I really like the Ferrari racing exhaust. IMO, best sounding exhaust I have heard ... but I have not heard them all. Steve
Bump. I just did this mod. Took it for a full run today. I like it and only noticed a tad bit less grunt on the low end. Lets see if this link works: https://www.facebook.com/john.kenney.319/videos/1379781962067530/
