extractors for landcruiser 4.5ltr

If it is factory fitted like the 80 series, it has them standard. The 2.5 system will cost $300-$350 approx from exp. Economy will improve slightly, so will power - unless like me you give it a bit more juice because it sounds great.

This is like Diesel/Petrol Auto/manual Toyota/Nissan Etc..

Some say yes gives me 400hp.. others say it doesnt do crapola.

I installed some on my GQ, and it did nothing, sounded marginally better, but others say they have put them on their GQs and can smoke up 44's..

Personally, I would save my coin for a Turbo(which I ended up with! So did the bloke I sold the extractors too!)...

If you install extractors, you need the exhaust, which all up is no change from $600-1000 depending on what you do and want.

And as the other bloke said ends up you stick the slipper into it more to hear the noise more than power and then you lose economy!

I fitted extractors because the Suzuki headers normally crack. Mine had and been rewelded, but the bigger problem was that the exhaust studs were constantly making themselves come loose, meaning reassembly of the exhaust with new gaskets after every 4wd trip if you wanted the damn thing to run properly...

I wanted a full sports exhaust system, but was recommended against it, with the shop claiming that I'd lose back pressure and thus torque.

My understanding of this is that a free-er flowing exhaust (say 2" instead of 1 1/2" stock) will generate more power everywhere for less fuel.

After I've got it rego'ed up here in sunny queensland then I'll get a full sports system - by then I'll probably have crushed the rear muffler again on a nice big rock.

Extractors without the full exhaust system being changed make little difference. Change the whole system or don't bother, or better yet fit a turbo.....

Try going for a larger diamater exhaust first. I did and while fuel economy did not improve much it had more power, oh and get rid of the muffler for a more free flowing one.