Modding tuning and best performance upgrades on the Nissan YS23DDTT engine!

Car tuning tips:YS23DDTT Modifications"

YS23DDTT Modifications Guide

How to modify and upgrade the Nissan YS23DDTT

"Comprehensive guide to performance parts and tuning the Nissan YS23DDTT engine!"

Popular tuning sites like TorqueCars are frequently getting emails asking about how to improve the YS23DDTT from people inquiring about getting more power from the YS23DDTT and wanting to know what are the optimum YS23DDTT modifications. So let us look into Nissan YS23DDTT parts and outline the best modifications on this great engine and point out some common pitfalls along the way.

The Nissan YS23DDTT are good project engines and with carefully picked modified tuning mods like ECU maps, turbo kits and camshafts you will really increase your driving fun.

This pages aim is look at YS23DDTT tuning and highlight the greatest modifications for your car.

The best YS23DDTT mods on an engine are usually the ones that give the best gains for your money.

We won't be swayed by popular YS23DDTT mods, they need to be cost effective.

YS23DDTT induction kits

Improving air intake on the YS23DDTT

You need air matched to fuel for an engine to work. If there is little supply of fuel then it will run lean, if there is not enough air it runs rich losing power . We'll pick up on fuelling later in this article but for now we shall look at air supply.

So Pulling more fuel and air into the YS23DDTT engine is the whole point to any performance tuning project.

It is not unusual that there is a restriction in the air flow sensor AFM/MAP on the YS23DDTT when a lot more air is being fed into the engine.

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

Intake manifolds carry the air flow from the filter and allow it to be drawn into the engine cylinders with fuel for the squish phase.

Shape and rate of flow of the Headers can make a substantial difference to to fuel mixing and power on the YS23DDTT.

Commonly we find the intake are crying out for aftermarket parts, although some makers provide well optimised intake.

Big valve conversions on the YS23DDTT, getting port work and head flowing will also lift performance, & importantly will afford you an improved performance increase on other mods.

YS23DDTT performance cam tips.

Different YS23DDTT engines respond better to mild cam durations so view each engine as unique.

The map and fuel pump and injectors also have an effect on the bhp gains you'll make.

Longer valve durations can alter the bhp 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.

The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large power band gains are on offer for camshaft upgrades.

NB: Fast road cams tend to boost the performance through the rpm range, you may sacrifice a little bottom end torque but 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.

A Motorsport cam won't do well if driving around busy urban areas.

You should ideally optimize your power band to your driving style so for a daily driver stick with a shorter duration YS23DDTT cam

Stage 1, 2 and 3 mods for the YS23DDTT

Stage 1 YS23DDTT parts:

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

Stage 2 YS23DDTT parts:

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

Stage 3 YS23DDTT parts:

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

The YS23DDTT engines make great tuning projects and thankfully there are plenty of mods and tuning parts about.

A remap helps to establish the full potential of all the mods you've done to your YS23DDTT.

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 figures achieved may rely on the mods you've carried out and the condition of your engine.

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

Turbo modifications on the YS23DDTT

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 YS23DDTT.

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

When your car is turbocharged, mods are simpler to install and you'll see that turbocharged engines use better components.

There are weak spots for every engine, with some being incredibly solid and some only able to handle stock power

We recommend you find these restrictions and fit higher quality components to cope with the power.

There are many drivers spending a loads of money on turbocharger upgrades on the YS23DDTT only to experience the engine explode on it's first outing after it's finished.

Large upgraded turbo chargers will usually suffer a bottom end lag, and low capacity turbo chargers spool up really quickly but don't have the high rpm torque gains.

Over the last 20 years the selection of turbo chargers is always improving and we commonly find variable vane turbo chargers, permitting the vane profile is altered according to speed to lower lag and increase top end bhp.

Twin scroll turbo chargers divert the exhaust flow into two channels and flow these at differently angled vanes in the turbo charger. They also boost the scavenging effect of the engine.

Beefing up the air intake by adding a supercharger or additional turbo will help you achieve very large performance gains, although more challenging to get working. We have this feature on twinchargers if you want to read more.

Tips about fuel supply on the YS23DDTT

You will need to ensure that the engine is not starved of fuel so must pay attention to the fuelling when you start exceeding 20% of a bhp and torque hike. It makes sense to over specify your injector capacity.

As a rule of thumb add 15% when fitting an injector, which takes into account injector deterioration and gives a bit of spare capacity should the engine need 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 YS23DDTT performance exhaust upgrades

Only look to boost your exhaust system with an upgraded one is if your current exhaust is actually creating a flow problem.

On most factory exhausts you'll find the flow rate is fine 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.

Sports exhausts equal out the flow of gases through the engine.

But if the exhaust pipe is too large, ie: over two and a half inches diameter, you will lose a lot of your flow rate and end up losing power and torque.

Usual exhaust restrictions come around the catalysts installed, so adding a freer flowing high performance alternative will help avoid this restriction.

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

Faults issues and things to look out for on the YS23DDTT

Like most engines an YS23DDTT, 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 YS23DDTT, failure to do this will exacerbate engine wear, on a tuned YS23DDTT 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 YS23DDTT why not pop over to the forums at TorqueCars where you can chat about YS23DDTT tuning options and read about others projects who may be planning to do similar modifications on their YS23DDTT.

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