hongkongfuey wrote:actually done properly a 2.7 should make 230 +, if do a cheap one would make 180-190with craploads of torque for less than a stainless btb, also those who put on a 6branch regardless of make would put on a stainless system, upping the cost to about 1-1.5k depending on system.
The hottuning debate has done the rounds as have the is, 325 sport over 325ise, if you have crap loads of cash good for you, others who dont want to spend 1000's on their cars, but want a hottuning so be it , and if people don't like them so what. They are a copy of the btb and a 1/4 of the price, and i got one from a recomendation from someone on the zone, and i doubt many know more about e30's here on the zone, and before it's said i know the quality isn't the same but its not worth 4 times the amount
The most powerfull 2.7's on the zone ie the ones circa 230bhp cost alot more than the £650 a BTB2 costs and even a cheapo home build 2.7 costs alot more than £650! To build one PROPERLY without reusing old shells, pumps, rings etc would cost the thick end of £1500.
Its also widely regarded that stainless exhausts give little or no gains over a standard genuine BMW exhaust and as you can use a standard 3 peice BMW exhaust with the BTB2 there is no need to spend the extra £400 or so on a stainless exhaust.
Fact of the matter is that the BTB2 give the best gains on its own for a bolt on item. A chip will give 5-10bhp and similar torque, a cam on its own not alot as it needs a chip/remap to work and a stainless exhaust 2-3bhp if anything at all.
Remember, 15bhp and 20lbft from the BTB2.
I've said all i need to in the past about the HT manifold.