Mile's old 4200 alive and well
- Thread starter Andyk
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Benny loud, or just bloody loud like a thermonuclear bomb going off?
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Emtee
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The full Larini gives a different sort of loud to Benny's.
I had sports cats, H-pipe and un-valved back boxes and the result was a low V8 grumble building in volume and pitch, but never to a high-revving Ferrari type screech. A little like an American V8 muscle car I guess, but not as lazy.
Benny's, IMO, doesn't have a Ferrari screech either (which I don't find to be a nice sound anyway), but it doesn't have the same low grumble either. It starts from a higher, more 'urgent' baseline, less urgent than a Gallardo, bit in that sort of vicinity.
To be honest, it's not a Larini combination I'd go for again, but then on the GS with valved back boxes it would be different anyway. On the GS I need to de-cat the exhaust manifold to begin with, then after that a pair of high-flow cats and I'll see where that gets me.
Time will tell...........
I had sports cats, H-pipe and un-valved back boxes and the result was a low V8 grumble building in volume and pitch, but never to a high-revving Ferrari type screech. A little like an American V8 muscle car I guess, but not as lazy.
Benny's, IMO, doesn't have a Ferrari screech either (which I don't find to be a nice sound anyway), but it doesn't have the same low grumble either. It starts from a higher, more 'urgent' baseline, less urgent than a Gallardo, bit in that sort of vicinity.
To be honest, it's not a Larini combination I'd go for again, but then on the GS with valved back boxes it would be different anyway. On the GS I need to de-cat the exhaust manifold to begin with, then after that a pair of high-flow cats and I'll see where that gets me.
Time will tell...........
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Good insight, thanks Miles.
H-pipe versus X-pipe - much of a difference in sound / other characteristics?
H-pipe versus X-pipe - much of a difference in sound / other characteristics?
I was all set to add a Larini x-pipe to the valved rear boxes on my GS. I was then told that the previous owner to me did exactly that before a European road trip. Upon his return he promptly had it removed and the standard piping replaced.
Miles - I'll be very interested to see what you decide with removing the manifold cats and fitting high-flow secondaries. If there's a benefit in doing 2 cars at once please let me know. I'm keen to get rid of that squished pipe nonsense and see what the improvements are, if any. I'm not after more noise, but would be happy with a little more power/torque and driveability.
Miles - I'll be very interested to see what you decide with removing the manifold cats and fitting high-flow secondaries. If there's a benefit in doing 2 cars at once please let me know. I'm keen to get rid of that squished pipe nonsense and see what the improvements are, if any. I'm not after more noise, but would be happy with a little more power/torque and driveability.
Emtee
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I'll certainly let you know MAF. There's a specialist that I'm hoping will fabricate my Exxy exhaust (Guy Croft recommendation) that really know's his stuff and who would eat this for breakfast.
My thoughts are to chop the exhaust cat's out, weld in a bolt plate at that point on the exhaust (same bore and angle), and then from that point back fabricate a short section to where the standard cat section begins. Doing this means that should anyone be stupid enough to want to put the OEM cat section back on then they can. The plan then would be a custom high-flow cat section. Couldn't give a rats @rse whether it has squish pipes or not, and this guy doesn't think in that way, but only to design as un-restricted a system as is possible given the mechanical constraints.
I'll keep you posted, as I'm sure more than one sale on the back of his efforts would pique his interest.
My thoughts are to chop the exhaust cat's out, weld in a bolt plate at that point on the exhaust (same bore and angle), and then from that point back fabricate a short section to where the standard cat section begins. Doing this means that should anyone be stupid enough to want to put the OEM cat section back on then they can. The plan then would be a custom high-flow cat section. Couldn't give a rats @rse whether it has squish pipes or not, and this guy doesn't think in that way, but only to design as un-restricted a system as is possible given the mechanical constraints.
I'll keep you posted, as I'm sure more than one sale on the back of his efforts would pique his interest.
BennyD
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Miles, have a think about the mod we did to the GS boxes on mine. They work really well and I really don't think there is any drone. Worth a thought.
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Hmm... Thanks Miles. I want to get closer to Stradale noise, so more volume but definitely no more drone. In fairness the standard pipes can drone with the valves open, but more speed can get you through that discomfort. I'm told an X-pipe would do the job. No plan to change anything else. Any thoughts..?
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Cost-prohibitive, Andy. Plus the Stradale is all weird out the back and exits higher and more centrally. I. Hoping an X-box would be a cheap-ish way to achieve the same thing.
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Yes, had a chat with Noor and he gave me great confidence. Reading round a couple of other forums I found a couple of people who had an X-pipe but removed it because it was too loud. Admittedley, one had a Stradale already, which seems a bit like pouring petrol over a fire! 
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Benny/Ian.......our forums exhaust arbiter only has one concern, if you're not nearly deaf after a blat....there its way too quiet......
P
Pardon...?
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I'm reserving judgement on the matter... time will tell