rtune Posted February 1, 2009 Share Posted February 1, 2009 How do ferrari get to sell and register their cars when their exhausts are so bloody noisy? I was behind an F430 and it did a very small squirt, the sound was louder than the loudest skyline I ever heard. Nobody ever EPA's their ass? Because they have loadsamoney, a lawyer on speed dial, and live in rose bay? Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/ Share on other sites More sharing options...
Primordial Posted February 1, 2009 Share Posted February 1, 2009 The volume level that the EPA use isnt a peak loudness, the reading is taken from DROPPING the throttle from a specific RPM to idle. The tested RPM is different for every vehicle. They've got a book which states the RPM which needs to be tested for each type of car. Heres some more info: http://www.ntc.gov.au/filemedia/Reports/Na...estSept2006.pdf Anyway you'd probably find that on the ferrari it would be be under 90db. It's only when under heavy acceleration that it would scream like you heard. It's probably the same reason so many bikes get away with having ridiculously loud exhausts. Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4402055 Share on other sites More sharing options...
N1GTR Posted February 1, 2009 Share Posted February 1, 2009 Valves in the exhaust Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4402227 Share on other sites More sharing options...
s13_Skyline_inside Posted February 2, 2009 Share Posted February 2, 2009 valves in exaust are illegal for you put in and be controled by a switch, they have to be controlled by the computer so you cant open them when you like, only at the set point by the comp, some bikes have this as well, my uncles new honda bike has this, not sure which one it is, won bike of the year i think tho Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4402573 Share on other sites More sharing options...
FloydWestwood Posted February 2, 2009 Share Posted February 2, 2009 there a great idea though. the engineer who patent'd them must be a gazillionair by now. Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4402616 Share on other sites More sharing options...
eeiko321 Posted February 2, 2009 Share Posted February 2, 2009 valves in exaust are illegal for you put in and be controled by a switch, they have to be controlled by the computer so you cant open them when you like, only at the set point by the comp, some bikes have this as well, my uncles new honda bike has this, not sure which one it is, won bike of the year i think tho u mean like the VAREX mufflers...with the remote controlled butterfly valve in the muffler.........? How do ferrari get to sell and register their cars when their exhausts are so bloody noisy?I was behind an F430 and it did a very small squirt, the sound was louder than the loudest skyline I ever heard. Nobody ever EPA's their ass? Because they have loadsamoney, a lawyer on speed dial, and live in rose bay? dude, who cares anyways......its just one of them things....at least its a ferrari and sounds good...... think about it.....heres another example.......how the FYLING f**kKKKKKKKKKKKKKKKKKKKK.......do Chopperz & Harleys get road approved......if the DB limit is 95db or 92 now... Harleys and Choppez will be 10000000000000000000000000db!!!!! they gotta be the MOST anoyying sounding motor vehicle ever to be invented by man.... because they have loadsamoney?, a 9mm under their belt & part of a Bikey chapter that the cops dont wana f**k with? theres always gonna be loop holes, but unfortunately it wont be for you and your skyline............ Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403110 Share on other sites More sharing options...
tbag Posted February 2, 2009 Share Posted February 2, 2009 my boss has a 430 he told me it has a valve in it that works off how quick the throttle is pressed down, only loud when you give it not when your cruising Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403139 Share on other sites More sharing options...
rtune Posted February 2, 2009 Author Share Posted February 2, 2009 yeah it seems it does have a valve "The F430 exhaust has a diaphram activated valve in the exhaust, when the valve opens the exhaust basically bypasses the complete exhaust system, straight from the extractors to the tips basically" and yeah it also bugs me that harleys can run straight pipes loud enough to set off car alarms and seemingly some of them are sold like that right off the showroom floor. Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403167 Share on other sites More sharing options...
cuppas Posted February 2, 2009 Share Posted February 2, 2009 a 9mm under their belt man... i think im taking work home with me i was thinking, what sorta bolt is he gonna be undoing with a 9mm socket? Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403179 Share on other sites More sharing options...
NISMØ Posted February 2, 2009 Share Posted February 2, 2009 (edited) Easy solution that ive come up with and I reckon it is virtually undetactable. Its like varex , get a Exhaust Control valve from Autobarn , a muffler . Weld / attach / watever the ECV onto the muffler. Then build another complete shell around the muffler enclosing it all so it looks stock except for a wire poking out the top. Get the wire attached to a metal rod and have it mounting around the undercarriage so it looks like a clamp and then encase the clamp in metal so you cant see the wire. Hide the switch in your cabin somewher and label it as A/C control or whatever. Make sure the muffler is in the middle not the rear muffler like a cannon. Cops will never be able to detect it without unbolting your whole system and looking into the muffler. Pretty off topic but I believe many cars have done this as they mega quit on low throttle and instantly go loud at the same rpm. No varex muffler aswell. Edited February 2, 2009 by NISMØ Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403562 Share on other sites More sharing options...
eeiko321 Posted February 2, 2009 Share Posted February 2, 2009 man... i think im taking work home with mei was thinking, what sorta bolt is he gonna be undoing with a 9mm socket? i dunno? the Nut..... behind the wheel? lol Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403578 Share on other sites More sharing options...
Kujotk Posted February 2, 2009 Share Posted February 2, 2009 i thought th same thing when i was being raced by a fool in a silver 430 in bankstown on friday night. we were just cruising next to each other, then he floored it for 0.0000001 second and he was already 3 car lengths infront of me, then he slowed down next to me and did it like 5 times, abit of a wanker but a very impressive car.... baqsically sounds like a japanese race bike with straight pipes. WHo says dealing drugs doesn't pay? He was a wog in his early 30's in bloody bankstown lol even to rent one they are an arm and a leg, gota be over 30 or 35, $25000 deposit bla bla bla.... Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403889 Share on other sites More sharing options...
tbag Posted February 2, 2009 Share Posted February 2, 2009 i thought th same thing when i was being raced by a fool in a silver 430 in bankstown on friday night. we were just cruising next to each other, then he floored it for 0.0000001 second and he was already 3 car lengths infront of me, then he slowed down next to me and did it like 5 times, abit of a wanker but a very impressive car.... baqsically sounds like a japanese race bike with straight pipes.WHo says dealing drugs doesn't pay? He was a wog in his early 30's in bloody bankstown lol even to rent one they are an arm and a leg, gota be over 30 or 35, $25000 deposit bla bla bla.... to rent 4 different ferrari's in a day it's around $750 http://www.about-australia.com/travel-guid...ari-drive-days/ it was in the paper the other week. they're booked out for the next 3 months Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4403922 Share on other sites More sharing options...
FineLine Posted February 2, 2009 Share Posted February 2, 2009 My zorst guy (scotts rods) and I were discussing this the other day, He had what I considered to be a brilliant idea, Make something similar to a varex but run it off vacuum. the more you rev the wider it opens. Free revving with little or no boost would see it remain mostly closed and quiet. Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404135 Share on other sites More sharing options...
scathing Posted February 2, 2009 Share Posted February 2, 2009 (edited) My zorst guy (scotts rods) and I were discussing this the other day, He had what I considered to be a brilliant idea, Make something similar to a varex but run it off vacuum. the more you rev the wider it opens.Free revving with little or no boost would see it remain mostly closed and quiet. Someone's already done it. Have a read here. I had a long chat with Kevin Davis about it, and he sent me some diagrams. He's got the regular, manually operated one using that valve. Just a switch so you can set it to open or closed. When I build my custom exhaust, this is the one I'll be getting. The next model up, which has both a switch and the option of taking an another input. You can plug it in to an ECU that has can do outputs, or I suppose you could modify a shift light to send the appropriate signal to the unit when you hit a certain RPM. The one you're interested in detects exhaust backpressure and self-regulates to hold it at a constent level. It'll also take inputs from the TPS and RPM, so if both conditions are met it'll open the valve and let the backpressure drop (and the noise rise) at a legal RPM. I suppose you could configure it to only use one if you wanted. That'll allow you to downshift and engine brake without waking the neighbours, but if you're up it for the rent you can configure it to open at a legal RPM. It's switchable between open, closed, and self-regulating, but for legality you could remove the switch and have it permanently on self-regulating. Edited February 2, 2009 by scathing Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404359 Share on other sites More sharing options...
rtune Posted February 2, 2009 Author Share Posted February 2, 2009 Someone's already done it. Have a read here.I had a long chat with Kevin Davis about it, and he sent me some diagrams. He's got the regular, manually operated one using that valve. Just a switch so you can set it to open or closed. When I build my custom exhaust, this is the one I'll be getting. Looks like hyperflow are selling it now http://www.hyperflow.com.au/index.php?widg...aust-system-aes Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404383 Share on other sites More sharing options...
Kujotk Posted February 3, 2009 Share Posted February 3, 2009 to rent 4 different ferrari's in a day it's around $750http://www.about-australia.com/travel-guid...ari-drive-days/ it was in the paper the other week. they're booked out for the next 3 months look again, $10-$20k deposit depending on car, $5390/weekend (friday arvo-monday morning), or $670/hour with 2 hour minumum for 430 spider.... also if anyones interested theres a free ferrari rental tour day left for this weekend.... Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404535 Share on other sites More sharing options...
FloydWestwood Posted February 3, 2009 Share Posted February 3, 2009 five grand for a weekend. bloody hell. Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404658 Share on other sites More sharing options...
rtune Posted February 3, 2009 Author Share Posted February 3, 2009 five grand for a weekend. bloody hell. It would be easier to join that classic car club in mosman. 20k or something, and you get to pick from a pretty large stable of cars including a GT3, and if you mostly pick weekdays and off-season you can rack up some serious seat time throughout a year. although I don't think you can take them on track days. so it would be an exercise in unfulfilled potential. Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404718 Share on other sites More sharing options...
Primordial Posted February 3, 2009 Share Posted February 3, 2009 The Supercar Club? http://www.supercarclub.com.au/ Link to comment https://www.sau.com.au/forums/topic/255166-ferrari/#findComment-4404731 Share on other sites More sharing options...
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