T350 plus supersport zorst and de-cat pipes?

[GOM]

Is anyone running a T350 or Tam with TVRPower SuperSport exhaust and de-cat pipes? If so - what does it sound like apart from f:censored:g deafening? I've got the SS and I'm considering de-cats or is it just too loud:D

Maybe would be interesting to slot a couple of cherry bombs in instead of straight pipes. Views please!!

[W333]

Apparentley (according to some bloke at Racing Green TVR), removing the cats on an S6 results in a bit of a top-end power loss. I've got no proof of that but he seemed to know what he was on about so I took his word for it.

[GOM]

Thanks I'll follow up on that one.

[madbadger]

Mine hit 124dB, at BNG, with the cats still in.

If it looses power (even a little bit) I'm not sure I can see the point.

[mwtryan]

Had my Cats removed some weeks ago - car has more grunt now right across the range - also had my manifolds ceramic coated - helps with heat and exhaust efficiency. Sound MUCH better - louder, crisper with some nice "popping off" sounds when deaccelerating. Also helps with cabin temperature too as the Cats would give off a lot of heat. Once done I'm told the car should be Dyno-tuned to maximise the effect - stands to reason as the whole exhaust set-up has changed and the car should be mapped for this - have not done this yet but intend to.

[GOM]

Do you have standard rear box or have you fitted supersports. Mine pops and bangs like mad with supersports plus cats in place.

[mwtryan]

Exhaust is bog standard except for ceramic coating and removed Cats.

[AlexRWD]

W333 said:

Apparentley (according to some bloke at Racing Green TVR), removing the cats on an S6 results in a bit of a top-end power loss. I've got no proof of that but he seemed to know what he was on about so I took his word for it.

I think the owner at Austec found similar results, he has a Tamora, and has been trying various things with that.

[Mr Freefall]

AlexRWD said:

W333 said: Apparentley (according to some bloke at Racing Green TVR), removing the cats on an S6 results in a bit of a top-end power loss. I've got no proof of that but he seemed to know what he was on about so I took his word for it. I think the owner at Austec found similar results, he has a Tamora, and has been trying various things with that.

You dont lose top end power, you do gain some, in the region of 8 bhp with a decatt chip that you can get from Dom at TVR Power, you do however get a torque flat spot at 3000 rpm - 3500 ish. You dont notice it much as the torque is quite high there...

I have a Mark Adams rechip for the T350 (with decatt) that produced 375 bhp on mine in the cupboard I think.

Mr F


>> Edited by Mr Freefall on Sunday 25th September 18:37

[GOM]

Thanks guys - think I'll try it.

[lundinoir]

I've just had the TVR Power Super Sports Silencers fitted and haven't noticec any difference in performance thus far.

[mwtryan]

Is it necessary to get a de-cat chip or simply have the car dyno-tuned, if a de-cat chip is necessary do you have any contact details of where I can get?

[Mr Freefall]

mwtryan said:

Is it necessary to get a de-cat chip or simply have the car dyno-tuned, if a de-cat chip is necessary do you have any contact details of where I can get?

Dyno tune is a complete remapp of the fuel and ingition etc, as the car is running, and takes some time, best part of a day really.

The problem with removing the cats and sport exhuast is loss of back pressure. Back pressure helps close the valves (there is alot more which Im sure a technical person would list). The Decatt chip remapps the fuel so trying and stop any vavle burn etc, and the Remapp is a totally different in the fuel mapping and ignition timing when Paul looked top a std chip

Along time ago when I spoke to Dom about this, he suggested modifying my back box for the noise, but keep the back pressure if I was going to decatt my car.

I did both (Sport exhuast and decatt), but had a remapp at Austec with Mark Adams and Paul, so this was sorted out. The remap and bits cost £1100 or so.

I have a low quality wav file somewhere of my car so you can hear the effects if you so wish.

Mr F