I want a Le Mans Corvette sounding exhaust !

[Del 203]

Simple said:

Have any of you who have gone down the full decat route also got a sleaved exchaust?

Allegedly

[Golflion]

450Nick said:

You'll be wanting the following system then...

ACT stainless steel sports manifolds with decat pipes and smoothbore y piece, then the stainless steel cherrybomb exhaust system for the rear. I've had several comments on my car sounding like a nascar which is about what you're looking for. These videos were taken shortly after I put it on (on a bit of a rubbish camera phone) but it had crap cam timing so wasn't running quite as well as it should. Since then its been set up properly and I've added a supercharger so its got even deeper and louder . Must get some new vids when the sun comes out!

http://www.youtube.com/watch?v=ZqdVcWP8GE0 - Overrun
http://www.youtube.com/watch?v=tP-05Kg2FgY - Takeoff
http://www.youtube.com/watch?v=qEYjDOX6Mas - Flyby

Hope that helps

Edited by 450Nick on Tuesday 10th February 21:15

Getting the ACT Y piece for when i take the pre cats out, thought about the ACT manifolds but are a little pricey,would it be very little gain anyway and am i alright refitting my existing decatted manifolds with the ACT Y?

[snorky]

dumbfunk said:

dhf said:

so to go back to the original post,does the original TVR exhaust system need to be changed to a 2 pipe system firstly before removing cats and silencers to get the "Le Mans Corvette sounding exhaust" ?

Here's a clip of a RV8 engine on a trolley with just the manifolds and therefore no balance pipe mechanism - I guess this is the sound you're after right?

http://www.youtube.com/watch?v=zRk4MdzGlko

I do love the sound but not sure I'd want to sacrifice any horses for it and I believe the TVR system is fairly well designed in principal.


dumbfunk

Can't believe there is that socket wrench laid across the battery inches from the terminals!! Arc welding here we come...

[SILICONE KID]

what is the difference in cost, noise etc between the A.c.T and clives Y piece

[retroptvr]

Best pops and bangs IMO, come from slightly over balanced feathered throttle on the overrun down a steep hill, held in second with an excess of Millers octane mixed with Shells Ferrari fuel for the road, enhanced with cold clear compressible air on a cold morning, easier breathing and better sound travel!

An aggressive cam and accurate fuel map adds a certain finesse to the noise of removed silencers!

[dhf]

SILICONE KID said:

what is the difference in cost, noise etc between the A.c.T and clives Y piece

Clive's Y piece to me is better made,look at his stats on his site and one would get the feeling that Clive put in many hours R&D to arrive at his finished product.you only have to look at his other work recently fearured on this forum to see that its the dog's danglers and the guy knows what he is about.
Price...you pays for what you get..IMHO

[jenkotvr]

So SHOWCASE.....how are you getting on with your full DECAT and y piece???

Ive decatted and am just waiting for my ACT Y Piece!

Post a vid if you can!

[Golflion]

Interested with the result.doing mine next month....full decat with ACT Y piece

[Pupp]

One thing's for sure, it'll be loud. Prepare to avoid multi-storey car parks, fall out with neighbours and get grief from old ladies. Potential ASBO material (yep, really)

Decatted with stock silencing on the back works well and is pleasant.

[jenkotvr]

Yeah for sure....Full Decat with original exhaust (non Sleeved)

Has anyone got any vids out there where they have done this?

Are there any vids out there where someone has done this?

[Golflion]

Pupp said:

One thing's for sure, it'll be loud. Prepare to avoid multi-storey car parks, fall out with neighbours and get grief from old ladies. Potential ASBO material (yep, really)

Decatted with stock silencing on the back works well and is pleasant.

I'll let you know when its done,if going to be toooooo loud might have to put silencer back in!!!!!!

If i can i will try and vid before and after.

[showcase]

Wow this is a old thread !, Well i can safely say the job was well worth doing. I am very, very pleased with the results and so is every one who has listens to the before and after.
I never had any pops before i de-catted and now i get some ( not all the time though but definitely lots more than it did ). Like i have said before , im not sure if the performance has improved but the engine temp is now always good ( though i do have the cooling mod on mine ).I didn't re-map either.
I haven't got round to having the emissions checked yet, though im told it will go through . I'm sure it will help if you know the m.o.t guy quite well.
No need to remove the manifolds , i did my pre-cats with them still in place, long masonry drill bit essential though.
enjoy!


I may just add before i de-cated i had :
1st) standard exhaust with all the wadding removed from the silencer box. loud but to sharp and "tinny".
2nd) i had cherry bombs fitted to my silencer box, the result was a nice deep burble but now slightly quieter .
3rd) removed the pre-cats and fitted Act Y piece ( New Y piece is important though) apart from having the Main cat removed. The pipe is much narrower at the base of the "Y" shape this should prevent the "tractor" noise effect which doesn't sound good.

For me it was important to sound deep and loud more than just loud. Straight through pipes should achieve this but was not the type of sound i was looking for.

Edited by showcase on Monday 2nd November 17:41

[jenkotvr]

I'm still waiting for my y piece.....man ACT are slowwww

[Steve in Stoke]

I spotted these on ebay earlier - may be useful for someone with decats worried about future MOT's - http://shop.ebay.co.uk/?_from=R40&_trksid=m38&...

Mine has gone in today for a sleeved silencer, but I'm keeping all the cats in place.

[Golflion]

Steve in Stoke said:

I spotted these on ebay earlier - may be useful for someone with decats worried about future MOT's - http://shop.ebay.co.uk/?_from=R40&_trksid=m38&...

Mine has gone in today for a sleeved silencer, but I'm keeping all the cats in place.

I did the silencer thing then you realise how good it is,and then you start to think about the pre-cats out then the main cat then change the trumpets etc...............its a drug and becomes more addictive.....expensive.....what am i talking about.....fun!!!!!!!!!!!