i was wondering if there is any difference in a low mount and high mount turbo setup apart from apperance. as I'm slowly starting to buy part to convert my na as i'll be going a straight gas research setup. Cheers

highmount has better flow im pretty sure.

It depends which turbo you are going to put in place. Custom manifold will flow twice as good as a standard manifold which will reduce lag. High flow top mount manifold. High flow low mount manifold. Some original photos have not been recovered yet.

T04e

Low mount ftw! Not only does it look dead stock/standard you'll avoid hassles from cops/epa. High mount supposedly flows better because it's in a position were it can breath more, but unless it's going to be engineered go low mount. My2c.

i say Hi mount.. looks tough and draws attention, also gets better airflow. ill be goin hi mount once i got my CT. Some original photos have not been recovered yet.

i'm preety sure you don't need it to be engineered as the Vl came out turbo, as we all know. plus i did a quick read of the epa guide lines. about keeping it legal. straight gas doesn't need a canister http://epanote2.epa.vic.gov.au/EPA/Publications.NSF/2f1c2625731746aa4a256ce90001cbb5/c90ec843f3bbbe8fca256d9f00181c59/$FILE/1031.pdf

^ Wrong about that. Any aftermarket turbo must be engineered to make it 100% legal. The difference between it being lowmount and highmount is, lowmount they assume its a t3, whereas a massive t4 highmount staring at them in the face is straight away a defect/epa notice. Your choice, if you run that risk and you get caught then your the one that'll have to deal with returning it all back to stock to pass the pits. Highmount is however better for performance as has already been mentioned. In its your hands dude, im just telling you how it is Some original photos have not been recovered yet.

how is high mount better? the gas has to go up in the manifold, to the turbo, Then back down in the dump with big angles. with low mount the dump pipe is much straighter and the gas has a more straight forward flow path. it would also be alot easier to fit a 3.5-4" dump to a low mount setup and also the cooler pipes. your all saying "breathing", put a pipe on the intake of the turbo is its got fresh air all it wants. I like himount as you can see everything and inspect for damage, oil/water leaks and just make sure everything is 100%. its also alot better to work on.

Highmount looks tuffer to be honest lol, each to their own. I prefer low mount, meh. Avoids hassles from the wrong kind've people.

true that, decisions decisions

most cops wouldnt no the difference between a t3 or 4 if it hit them in the face. true story my mates dad has a XY with a 302 in it its been rego's as a 6 cyl for the last 7 years, cop pulld him over looked under the hood and seen "302" writen on the carbie he says "yep standard V6" cya later. so it just depends on the po po, most would give you a canary just for it being a hi mount coz it looks illegal to them.. and that good enough!

lol, i was told that it doesn't need an engineers, but if someone can prove it wrong ill take it on the chin

If a cops notices any mods he or she might ask for a mod plate(engineers certificate.) If they see anything other than standard they start asking questions. If you kept the turbo in the low mount position fewer questions will be asked I assure you. In most States of Australia, when a production vehicle is modified in a manner that affects its original compliance with the Australian Design Rules (ADRs), it must be certified by a recognised engineering signatory. The signatory will examine the modification and ensures that all changes continue to meet the ADRs and related local motor vehicle regulations. This is to ensure a minimum safety standards are adhered to and to validate the vehicle's registration. The certificate is a legal document that can also be used for insurance purposes. 1995: Federal Government makes the laws governing vehicle standards but the state authorities, `Vic Roads' in the case of Victoria, issue various guidelines interpreting the standards. Regulation 801 requires that one must not modify a vehicle `except with the approval of, or in accordance with guidelines issued by Vic Roads'. Some common modifications have been explicitly approved and notices are available covering them. Many modifications also require an `Engineers Report' to be submitted by `an appropriately qualified engineer'. The general principle seems to be that a vehicle must be "at least as good" as when originally built, in terms of safety, emission control and so on. If the vehicle is substantially modified, this principle must still apply.

^ True. My point exactly. Highmount Aftermarket Turbo = Looks Tuff, With the Higher Risk Of Defect/Epa Lowmount Aftermarket Turbo = Basically Undetectable, Minimal Chance Of Defect/Epa Attention. Up to you Some original photos have not been recovered yet.

wank factor ^