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Larry5.2 said:
Good to hear you got it back! I couldn't bear to ever be parted with mine...
I've got Larini sport cats with a Fabspeed exhaust which sounds awesome, but is still quite loud. Passes MOTs no problem. Sport cats with the std rear muffler box could be a good solution, or Fabspeed with std cats.... I had a Tubi on there before and that was louder strangely enough, despite being a substantial silencer box.
Thanks Larry, Thats really helpful. I don't mind loud but the straight pipes are quite warrbly and REALLY loud. Also don't fancy the fat every year for the MOT.I've got Larini sport cats with a Fabspeed exhaust which sounds awesome, but is still quite loud. Passes MOTs no problem. Sport cats with the std rear muffler box could be a good solution, or Fabspeed with std cats.... I had a Tubi on there before and that was louder strangely enough, despite being a substantial silencer box.
I've looked at the Larini site.
Is is just the primary sports cats that you have from them? Like these: https://www.larinisystems.com/collection/lamborghi...
Or do you have secondaries as well?
Fab speed I could only find in dollars
Is this what you have?
https://www.fabspeed.com/lamborghini-murcielago-su...
Pout of interest, any reason you didn't go for the whole system including sports cats for Fab Speed an decided to do part Larini and part Fab Speed?
Cheers,
LFB
Lambo FirstBlood said:
Thanks Larry, Thats really helpful. I don't mind loud but the straight pipes are quite warrbly and REALLY loud. Also don't fancy the fat every year for the MOT.
I've looked at the Larini site.
Is is just the primary sports cats that you have from them? Like these: https://www.larinisystems.com/collection/lamborghi...
Or do you have secondaries as well?
Fab speed I could only find in dollars
Is this what you have?
https://www.fabspeed.com/lamborghini-murcielago-su...
Pout of interest, any reason you didn't go for the whole system including sports cats for Fab Speed an decided to do part Larini and part Fab Speed?
Cheers,
LFB
Yes that's the one from Fabspeed. I called them up and they did a deal (pm me for more details).I've looked at the Larini site.
Is is just the primary sports cats that you have from them? Like these: https://www.larinisystems.com/collection/lamborghi...
Or do you have secondaries as well?
Fab speed I could only find in dollars
Is this what you have?
https://www.fabspeed.com/lamborghini-murcielago-su...
Pout of interest, any reason you didn't go for the whole system including sports cats for Fab Speed an decided to do part Larini and part Fab Speed?
Cheers,
LFB
I bought the car with the Larini primary cats and Tubi, but it was really loud and it droned around 2.7k rpm. Even though the Fabspeed has 2 token looking silencers, the X-pipe arrangement quietens it down.
What do you have as rear box?
Larry5.2 said:
Yes that's the one from Fabspeed. I called them up and they did a deal (pm me for more details).
I bought the car with the Larini primary cats and Tubi, but it was really loud and it droned around 2.7k rpm. Even though the Fabspeed has 2 token looking silencers, the X-pipe arrangement quietens it down.
What do you have as rear box?
Thanks. I’ll PM you shortly.I bought the car with the Larini primary cats and Tubi, but it was really loud and it droned around 2.7k rpm. Even though the Fabspeed has 2 token looking silencers, the X-pipe arrangement quietens it down.
What do you have as rear box?
I think the rear box is factory.
I did nothing to the car at all when I had it for the first 5 years.
I believe the chap who bought it also kept everything standard.
The last owner who only had the car for a few months is the one who started changing things. AFAIK, the only thing exhaust wise that’s different is the cats have been removed for straight through pipes. I have a picture of the cats that were removed. Please see below.
Given that nothing else has changed, I’m leaning towards the full fab speed system and get rid of the current straight through pipes.
Did you do the ECU remap from Fabspeed too?
If you buy the whole system they claim 52Bhp increase and 45KG weight loss.
Strange that he would have changed the cats and not the rear box. Power and weight claims are probably a little high but not hugely. I didn't remap, but no doubt that could get the full power out of it... At least on my 580, the engine does not use an air-flow meter, so it just estimates air-flow based on throttle opening (and possibly inlet depression) so any improved breathing will be undetected.
I agree it’s strange. In all, he spent £13K on the car, drove it 100 miles in 3 months and sold it for less than he paid for it.
With the current straight pipes, will I physically have to take them out and replace the original cats just to get an MOT when it’s due in July? That seems like a real PITA.
With the current straight pipes, will I physically have to take them out and replace the original cats just to get an MOT when it’s due in July? That seems like a real PITA.
Larry5.2 said:
Strange that he would have changed the cats and not the rear box. Power and weight claims are probably a little high but not hugely. I didn't remap, but no doubt that could get the full power out of it... At least on my 580, the engine does not use an air-flow meter, so it just estimates air-flow based on throttle opening (and possibly inlet depression) so any improved breathing will be undetected.
That’s really interesting. I don’t know enough about the ECU but if wait you’re saying is true it could end that any power gains can’t be realised without an ECU reprogram to go along with a new exhaust. With a free-er exhaust you do get power gains even without a remap - engine works on a wide range of air-fuel ratio, but obviously can be optimised for power or emissions.
The primary cats are much more difficult to replace as the engine needs moving slightly.
The secondary cats are separate and bolt on before the back box. The replacement for these is also 'straight' pipes, and presumably they've been replaced too. I guess you could put these back to Cats, though I dont know if they pass an MOT - I guess they would.... Note that the Fabspeed rear muffler replaces both the Secondary Cats and Back Box.
The primary cats are much more difficult to replace as the engine needs moving slightly.
The secondary cats are separate and bolt on before the back box. The replacement for these is also 'straight' pipes, and presumably they've been replaced too. I guess you could put these back to Cats, though I dont know if they pass an MOT - I guess they would.... Note that the Fabspeed rear muffler replaces both the Secondary Cats and Back Box.
Larry5.2 said:
With a free-er exhaust you do get power gains even without a remap - engine works on a wide range of air-fuel ratio, but obviously can be optimised for power or emissions.
The primary cats are much more difficult to replace as the engine needs moving slightly.
The secondary cats are separate and bolt on before the back box. The replacement for these is also 'straight' pipes, and presumably they've been replaced too. I guess you could put these back to Cats, though I dont know if they pass an MOT - I guess they would.... Note that the Fabspeed rear muffler replaces both the Secondary Cats and Back Box.
Thanks for the explanation Larry. The only thing that’s been taken off the car are the Cats in the photo. I think they are the primary cats but I’m open to being wrong. Do you think they are the secondary cats?The primary cats are much more difficult to replace as the engine needs moving slightly.
The secondary cats are separate and bolt on before the back box. The replacement for these is also 'straight' pipes, and presumably they've been replaced too. I guess you could put these back to Cats, though I dont know if they pass an MOT - I guess they would.... Note that the Fabspeed rear muffler replaces both the Secondary Cats and Back Box.
I understand they’ve been replaced with straight pipes. I called SB Race Engineering as they did the work and they said that the last owner was thinking about a full replacement exhaust bud hadn’t pulled the trigger so the rest of the exhaust is completely factory standard.
At the risk of sounding stupid, I’m not sure I fully understand all the parts of the exhaust. I understand there are primary cats and then secondary cats then the muffler box then the tips. Is that correct?
There is a company in the States called Reid Performance who makes a DTP exhaust that claims to be the lightest available. There is a stainless version and a titanium version and he claims it’s 110lbs lighter than the factory unit! It replaces both the secondary cats and the muffler box.
The main thing he is known for is RWD conversions (a conversation for another day!) but he seems to be very highly regarded on a couple of forums and plenty of people using his kit.
Do you have any experience of him/the DTP exhausts?
Congratulations on the purchase.
UK/Singapore Murcielago only came with Primary cats, the Secondary Cats were replaced with the straight pipes in the image above.
The LP640 exhaust system is slightly different to a 6.2 Murcielago in that the Cat of the later car branches into two and incorporates an exhaust valve. When the valve opens it bypasses the exhaust muffler. An early car has exhaust valves on the exhaust tips, so its right at the end of the system.
You are right in thinking the LP640 has the exhaust manifold, primary valved cats (your car has straight pipes), secondary cat bypass pipes, exhaust muffler, and tips.
I know your car fairly well, I think the previous owner was looking to modify a less pristine example of an LP640 hence why it was sold.
Have a look on youtube, your options for Silencers are Tubi, Larini, Fabspeed, Kreissieg, Fi, IPE, Bartoli and Capristo. I would stick with Larini valved sports cats as they retain the valves and you can buy a remote kit so that in addition to throttle response, it can be opened and closed with the remote switch.
UK/Singapore Murcielago only came with Primary cats, the Secondary Cats were replaced with the straight pipes in the image above.
The LP640 exhaust system is slightly different to a 6.2 Murcielago in that the Cat of the later car branches into two and incorporates an exhaust valve. When the valve opens it bypasses the exhaust muffler. An early car has exhaust valves on the exhaust tips, so its right at the end of the system.
You are right in thinking the LP640 has the exhaust manifold, primary valved cats (your car has straight pipes), secondary cat bypass pipes, exhaust muffler, and tips.
I know your car fairly well, I think the previous owner was looking to modify a less pristine example of an LP640 hence why it was sold.
Have a look on youtube, your options for Silencers are Tubi, Larini, Fabspeed, Kreissieg, Fi, IPE, Bartoli and Capristo. I would stick with Larini valved sports cats as they retain the valves and you can buy a remote kit so that in addition to throttle response, it can be opened and closed with the remote switch.
Lambo FirstBlood said:
Larry5.2 said:
Good to hear you got it back! I couldn't bear to ever be parted with mine...
I've got Larini sport cats with a Fabspeed exhaust which sounds awesome, but is still quite loud. Passes MOTs no problem. Sport cats with the std rear muffler box could be a good solution, or Fabspeed with std cats.... I had a Tubi on there before and that was louder strangely enough, despite being a substantial silencer box.
Thanks Larry, Thats really helpful. I don't mind loud but the straight pipes are quite warrbly and REALLY loud. Also don't fancy the fat every year for the MOT.I've got Larini sport cats with a Fabspeed exhaust which sounds awesome, but is still quite loud. Passes MOTs no problem. Sport cats with the std rear muffler box could be a good solution, or Fabspeed with std cats.... I had a Tubi on there before and that was louder strangely enough, despite being a substantial silencer box.
I've looked at the Larini site.
Is is just the primary sports cats that you have from them? Like these: https://www.larinisystems.com/collection/lamborghi...
Or do you have secondaries as well?
Fab speed I could only find in dollars
Is this what you have?
https://www.fabspeed.com/lamborghini-murcielago-su...
Pout of interest, any reason you didn't go for the whole system including sports cats for Fab Speed an decided to do part Larini and part Fab Speed?
Cheers,
LFB
These are the primary sport cats for an LP640...
https://www.larinisystems.com/collection/lamborghi...
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