Modding and performance tuning parts for the Nissan VG30DETT engine!

All you need to know about "VG30DETT Modifications"

VG30DETT Modifications Guide

How to modify and upgrade the Nissan VG30DETT

"Comprehensive guide to performance parts and tuning the Nissan VG30DETT engine!"

Our friends at TorqueCars often are seeing threads about how to improve the VG30DETT from people inquiring about getting more power from the VG30DETT and wanting to know what are the premier VG30DETT mods that work. So let us look into Nissan VG30DETT parts and outline the best modifications on this great engine and point out some problems along the way.

Our aim here is to look at VG30DETT tuning and report on the premier modifications. Nissan VG30DETT make a good tuning project and with a few sensible mods like ECU maps, turbo upgrades and camshafts you will definitely improve your driving experience.

When talking about the optimum parts for your VG30DETT engine, we are going to concentrate on the ones that give the best value for money.

VG30DETT induction kits

Improving air intake on the VG30DETT

You need air and fuel for an engine to work. If there is a lack of fuel then it will run lean, if there is too little air it runs rich resulting in lost power which risks damage to the VG30DETT. We'll pick up on fuelling later in this article but for now we shall look at air supply.

So the primary aim to any engine upgrade task to feed more air into your VG30DETT but this has a knock on effect with the air flow sensor.

It is not unusual that there's a limitation in the air flow sensor MAF/MAP on the VG30DETT when considerably more air is being fed into the engine.

We note 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor was restricting bhp at a much lower level.

Engine intake manifolds flow the during the engines suck phase from the air cleaner and allow it to be drawn into the engine and mixed with fuel.

The shape and rate of flow of the air Intake manifold can make a noticeable change to fuel delivery on the VG30DETT.

It's not uncommon that intake are in dire need of an upgrade, although some manufacturers provide reasonably good intake.

Increasing the VG30DETT valve size, doing a bit of port work and head flowing will also lift power, & importantly will give you raising the power increase on other upgrades.

VG30DETT performance cam tips.

Different VG30DETT engines respond better to more aggressive cam durations so set your engine up on a rolling road.

The ECU mapping and fuelling also will say much on the power gains you'll make.

A longer valve duration can alter the power band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations.

Altering your VG30DETT cam will make a dramatic difference to the engine power band. Choosing a higher performance cam profile raises the power band accordingly.

NB: Fast road cams tend to boost the performance across the rev range, you could drop a little low end power but your top end will improve.

Competition cams, boost the top end band but as a result the car will not idle smoothly and low end power nearly always suffers.

On a typical daily driver you must carefully try to optimize your engines power to your typical driving style.

You will never find a VG30DETT Motorsport cam is a pleasure to live with when driving around busy urban areas.

Stage 1, 2 and 3 mods for the VG30DETT

Stage 1 VG30DETT parts:

Drilled & smoothed airbox, Intake headers, Sports exhaust manifold, Panel air filters, Fast road camshaft, Remaps/piggy back ECU.

Stage 2 VG30DETT parts:

Ported and polished head, induction kit, Sports catalyst & performance exhaust, high flow fuel injectors, Fast road cam, fuel pump upgrades.

Stage 3 VG30DETT parts:

Internal engine upgrades (head flowing porting/bigger valves), Engine balancing & blueprinting, Twin charging conversions, Competition cam, Adding or Upgrading forced induction (turbo/supercharger), Crank and Piston upgrades to alter compression.

The VG30DETT engines respond well to upgrades and thanks to their popularity there is an increase of parts and performance parts around.

A remap helps release the full potential of all the tuning parts you've done to your VG30DETT.

You will typically expect to see gains of approximately 20-30% more power on turbocharged vehicles and you can expect to see around 15% on NASP engines, but power output usually differs on the tuning parts you've done and the condition of your engine.

Turbo modifications on the VG30DETT

Tuning tips and articles Engine tuning Transmission tuning Care care Intake & exhaust mods Improve handling Forums

To get a turbo working on a NASP engine there is a lot involved, from lowering compression ratio to improved fuel supply and mapping, so we have found a great guide to helpavoid the common pitfalls or end up with an unfinished project because you were not told what you were getting into by doing this on the VG30DETT.

The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains.

When your car has a turbocharger modifications are more reliable and most turbo engines are built with strengthened components.

There are reliable limits for every engine, with some being over specified and some only just able to handle stock power

See where you'll find these limits and upgrade to more solid crank and pistons to handle the power.

We see many tuners spending a fortune on turbocharger upgrades on the VG30DETT only to suffer the humiliation of seeing the VG30DETT throw a rod on it's first outing after it's been enthusiastically driven.

Large upgraded turbochargers commonly experience a bottom end lag, and low capacity turbochargers spool up more quickly but won't have the peak end power band gains.

In the last 10 years the world of turbo units is always developing and we commonly find variable vane turbo units, allowing the vane profile is altered according to speed to lower lag and increase top end power.

Twin scroll turbo units divert the exhaust flow into a couple of channels and flow these at differently designed vanes in the turbo charger. They also improve the scavenging effect of the engine.

Beefing up the air intake by adding a supercharger or additional turbo will help you achieve very large power gains, although more complex to configure. We have this article on twincharging if you want to read more.

Tips about fuel supply on the VG30DETT

You will need to ensure that the engine is not starved of fuel so will need to ramp up the fuelling when you start exceeding 20% of a bhp and torque hike. Don't forget to over specify your injector capacity.

As a rule of thumb add 20% to the flow rate when fitting an injector, this allows for injector deterioration and allows some spare capacity should the engine require more fuel.

Don't forget that different fuel grades will usually require different settings, a high octane fuel will burn more efficiently than lower octane fuel for example. A car will trim fuel supply to keep within the ideal air fuel mix but at the extreme ends you may need to adjust your injector capacity, or the mapping or you'll get flat spots and potential lean or rich fuel issues..

Recommended VG30DETT performance exhaust upgrades

We'd only recommend you look to improve your exhaust system with an upgraded one is if your exhaust is actually causing a restriction in flow.

On most factory exhausts you'll find your flow rate is still ok even on modest power gains, but on a serious tuning project with a big boost in power you will certainly need to get a better flowing exhaust.

Please dont run with the largest exhaust you can source you'll slow the exhaust rate - the best for power gains are usually between one and a half to two and half inches. Your exhaust design, the bend angles and construction are what have more effect on flow rates than your pipe width to a certain extent. So the exhaust design is a big factor.

Typically exhaust restrictions can be located the catalyst and filters installed, so adding a higher flowing sports alternative will help avoid this restriction.

Decats (NB:catalysts reduce harmful engine emissions) is illegal in most countries and regions.

Faults issues and things to look out for on the VG30DETT

Like most engines an VG30DETT, should have few issues if it gets properly serviced and looked after.

We cannot stress enough the need for oil changes with the correct grade of oil on the VG30DETT, failure to do this will exacerbate engine wear, on a tuned VG30DETT this is more important than ever and close attention should be paid to your maintenance schedule.

If you are interested in learning more or getting impartial tuning advice for your VG30DETT why not pop over to the forums at TorqueCars where you can chat about VG30DETT tuning options and read about others projects who may be planning to do similar modifications on their VG30DETT.

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