Here are the figures for the TDV6 upgrade from JE Engineering:

STANDARD
Torque 440 Nm (324lb/ft) @ 1,900 rpm
Power 147 kw (192 bhp) @ 4,000 rpm

POST-TUNE
Torque 575 Nm (424 lb/ft) @ 2,400 rpm
Power 175 kw (235 bhp) @ 4,100 rpm

Paul RRS TDV8 - Stornoway Grey, Irory Leather with Dark Zebrano, Privacy Glass, Tow Pack.
1967 Cobra 427 S/C
1951 Vincent Comet
2001 Harley Davidson Fat Boy

Hi Paul,

Nice to see you at the weekend, proof that I do clean my car now and again

If you get time, just a reminder re the large OVAL exhausts/tails that you mentioned JE can do and if you could post some details/prices/pic if poss. As you mention JE/ITG are the same, can you let me know what JE say with regard to fitting their performance air filter to the supercharged.

Thanks

Martin 
" WITH MORE EXTRAS THAN A HOLLYWOOD EPIC "

Hi Martin,
Likewise.

I've just had prices back from JE for the exhaust. Full cats-back system (i.e. without cats.) for either large oval or dual dual-round is £880+VAT fitted, or £795+del. +VAT unfitted.
I haven't received any pictures yet but I'll post them as soon as I get them.
The ITG flter is OK for the S/C.
Cheers,
Paul RRS TDV8 - Stornoway Grey, Irory Leather with Dark Zebrano, Privacy Glass, Tow Pack.
1967 Cobra 427 S/C
1951 Vincent Comet
2001 Harley Davidson Fat Boy