3.4 HILUX v6

If you want more low down torque I would have thought a t/d diesel is the way to go, but you can't change cars hey..? I wouldn't be playing with stroker kits and the like on an engine like that, you could risk losing the Toyota reliability. You would be perhaps best served by getting a custom exhaust manifold built to suit along with some other exhaust mods. The exhaust manifold should be coated with somethign like High performance coatings to reduce heat. This could easily give you 15% more low down torque. I have the new Lux Turbo Diesel and the low down torque is sensational.

This is from a previous post of mine when asked about a Prado a week or so ago:

You can change the main muffler for a straight through type. Will increase the noise a bit though.

Check out www.lcool.org and there are links to a Yahoo group. There has been messages on there about performance improvements. Basically they are the muffler ($400 or less), a UNICHIP ($1250+) or a supercharger($$$$$$). The later is the best, some will argue that the other two don't have any real noticable effect.

I own a 3.4 V6 Hilux, and changed the muffler. Its a bit noisy now, but it does go slightly better. The Hilux would be much different in the noise department than the Prado, as the Hilux has virtually no sound deadening.

I believe there are even extractors on the market now, but they are expensive to fit due to the tight confines of the engine bay.

I was going to get a UNICHIP, but my lease is up in a year, so i don't think I will bother. Would be good to drive one with a UNICHIP to see what its like though.

Supercharger is the way to go, brings it up to nearly the power of the new 4lt V6 Prado, but it would cost heaps, like $5k at least.

Andrew