any gains from snorkel?

[rodeoboy]

Hey guys I am thinking of buying and installing a snorkel on my 3ltr turbo diesel .. Is there any noticeable performance gains from doing this?

[MrRevhead]

Much improved mileage when in water

On it's own I don't think you'd feel much, it depends on how restrictive the factory intake is and if you have done any other mods.

[topgun94]

i noticed gains from a snorkel in fuel economy.
I then installed a pod filter into the original air box and noticed better better and the engine would build RPM quicker.

[geeves]

It made a huge difference on the old bighorn but that had a diabolical inlet settup. The later Wizard and Bighorn have a much better standard settup so airflow wont change much. I assume the even newer Rodeo is good as well. Even so the fact that you get cold outside air must help a little and as the air comes from higher up the air cleaner should stay cleaner longer.
Ecconomy should improve but not by enough to cover the cost of the snorkel

[rodeoboy]

OK so an update ... Had the snorkel installed on my ra rodeo and there hasn't been any noticeable gains so I'm striving for any type of performance gain as it drives like a slug ... Might try that pod filter idea and see if that works ...

[geeves]

high flow filter bigger exhaust. fit boost guage and adjust boost to 15psi at full throttle and 2500 revs fit egr guage adjust fuel till you get a little smoke at full throttle then back off. Keep an eye on egt. (can you adjust fuel on this engine?)
advance timing half a degree or so
fancy engine chip

[MrRevhead]

But first, is it running correctly?
What do you mean by driving like a slug? Compared to what?

[isuzurob]

cant adjust fuel on them, smash the cat out of the exhaust behind the turbo, also if its a slug compared to others the airflow meters and injectors play up

[geeves]

DP chip advertise regularly in Aus on 4wdtv

[rodeoboy]

Will look at a performance chip but a little skeptical as they are so expensive and dont pormise any large amounts of performance gains

[geeves]

How much is a large amount?
Assuming you wagon is 100kw then 5% is 5kw which is a lot as chips also increse torque range and ecconmy at the same time.
As said before though compare yours to another similar wagon You may have a fault that needs addressing

[isuzurob]

like i said there were faults with some of the new zealand ra 4jh1-t with lack of power, were caused by blocked cats, injectors with incorrect tips from new, airflow meters, and some egr, egr can be thrown away