Exhaust upgrades ?

G'day mate,

I'd try looking here: Navara forum

Cheers,

Kevin........ :)

Not a direct reply but I wonder if a bigger exhaust is universally beneficial ? I have a 2008 Prado and have been told by two people at separate times from Dieselcare that any performance improvement would be negligible. I already have a Steinbauer chip. Have locked on Pradopoint and a lot of them have big exhausts but seems a bit vague/inconclusive ?

I have a 3lt Navara and put a bigger exhaust and snorkel- max size was 2 3/4 inch - with a mandrell bend.
Increased torque and power by 16% - fuel consumption remained the same - cost about $2700 3 years ago

Dougie

interesting post Doug i'm considering an exhaust for my black Prado i,ve recently purchased and have be told it will increase power about 10% and minor fuel economy, will watch further postings
thanks and good drinking

With any turbo'd engine, the less restriction in the exhaust, the better.
For your 2.5L, a 2 1/2" or 3" turbo-back exhaust will be a good thing.
As for no mufflers... just make sure you dont get droning in the cabin. You can have a large, free-flowing exhaust with mufflers.... just go for an inline, straight thru muffler and/or a hotdog type resonator to stop it droning in the cabin.
As for fuel economy and power benefits, most newer ECUs have a "fuzzy logic" that will allow a little power increase with a free-flowing exhaust, but to get the most out of it, having the ECU adjusted to suit on a dyno (or to a lesser extent buy an off-the-shelf generic "power" chip) is without doubt the best option if money allows.

I am running a 3 inch exhaust on my 3litre Patrol with a 3 inch dump pipe and a 100 cell high flow cat straight after the dump with two high flow resonators one in the middle and one tithe back and the difference was incredible with a 200 degree decrease in exhaust gas temp and a good increase in power but more importantly let's the motor breathe easier therefore better fuel consumption, win all round, if you are thinking of leaving the original dump that has the cat on it you would be wasting your time and money go full system turbo to rear and you will not be sorry
Cheers
Treker