lokokkee

Check out this site, which is the first time I come across a titanium back box. Too bad not available for Scoob yet. Only half the weight of a stainless steel equivalent (around 5 kg vs. 10 kg). Saw a video demonstrating their unusual exhaust system which has a small turbo fan embedded in the tail pipe. The swirling exhaust gas apparently will exit faster than a smooth flowing one. This was supposedly proven by timing the outflow of a measured quantity of water in an inverted bottle and then repeating the same after giving the water a few good swirls. The latter took only about half the time as before. Thought it is not a fair illustration as swirling the water imparts outside kinetic energy to it, whereas putting a small turbo fan in the exhaust adds no external energy (law of conservation of energy?). Alternatively, maybe swirling the exhaust gas speeds it up and reduces the back pressure, giving an increase in bhp. They also gave RR test results before and after fitting of said back box and show significant improvements in bhp, so maybe they are onto a good thing afterall.

http://www.gpsports-na.com/muffler.htm
Note: this is their site in English, the original site is in Japanese. The video is not available from their site, it came as a free VCD with a Taiwanese car magazine (in Chinese and Japanese, unfortunately) that did a factory visit and review of their system.

[Edited by lokokkee - 4/1/2003 8:31:54 PM]

NeilT

yes, we supply our Afterburner in Titanium form and have it on our WRX03 at present. Its ultra lite - weighing about the same as a small carrot details here http://www.scoobyworld.co.uk/trolley...#afterburnercf

Click on product title for large pic of it.

Hope this helps

Neil

[Edited by NeilT - 4/2/2003 10:03:43 AM]

beryllium

blitz make a titanium backbox.

Jools

Lokokkee,

I have a titanium exhaust on my Type UK Prodrive Sti-7. It is made by Subaru Sti and I got it through a UK import dealer, who got it from Japan.

It is standard fitment on the Sti-7 S202, which we don’t get over here.

Jools

ustolemyname??stevieturbo

iTrader: (1)

I seen a Titanium exhaust that came of a crashed Jap STI7 in a local breakers. It was damaged unfortunately. You seriously would not believe the weight of it.
The entire system weighed about the same as a normal de-cat downpipe. Bloody light, and quite cool lookin

lokokkee

The top photo is the turbo fan at the end of the tailpipe, which supposedly can lead to better extraction of exhaust gas.
The bottom photo shows the (top) original Civic Type-R backbox weighing 8.44 kg, (middle) stainless steel Spec D Pro replacement at 4.62 kg and (bottom) Spec Ti titanium model at 1.88 kg, less than a quarter of the OEM one.

TBMeech

They look quite restrictive imo, quite a few bends in the pipework leading up to the backbox, personally I wouldnt go for it, compare the pics to say a HKS Hiper which has far less bends in it...

RomeoNoob

check out www.invo-auto.co.uk

they do a range of titanium back boxes and were the first company to introduce the back boxes into the uk.

they specialise in scoobys, hondas, and mitsubishis