Modding upgrading and tuning the Toyota 1ND-TV engine!

Tuning guide "1ND-TV Modifications"

1ND-TV Modifications Guide

How to modify and upgrade the Toyota 1ND-TV

"Comprehensive guide to performance tuning the Toyota 1ND-TV engine!"

TorqueCars are regularly getting emails requesting info on how to improve the 1ND-TV from people wanting to know what are the best 1ND-TV upgrades. So let us look into Toyota 1ND-TV parts and outline the best modifications on this great engine and point out some potential pitfalls along the way.

Let us consider 1ND-TV tuning and show the best upgrades. Toyota 1ND-TV are awesome to work on and with carefully chosen motorsport modifications like remapping, turbo improvements and camshafts you will definitely maximize your driving experience.

The greatest 1ND-TV parts on an engine are obviously the ones that give the best power gain for your hard earned cash.

We won't be swayed by popular 1ND-TV parts, they need to be cost effective.

1ND-TV induction kits

Improving air intake on the 1ND-TV

You need fuel and air 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 Pushing air into the 1ND-TV engine is the aim to any engine tuning task.

You'll commonly see there's a limitation in the air flow sensor AFM/MAP on the 1ND-TV when considerably more air is being sucked into the engine.

You'll see that 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited bhp and torque at a much lower level.

Engine intake manifolds take the during the engines suck phase from the intake filter and allow it to be pulled into the engine cylinders with fuel for the squish phase.

Shape and flow rate of the Air Intake manifolds can make a noticeable effect on to fuel atomisation and engine efficiency on the 1ND-TV.

Commonly we find the intake manifold are needing performance upgrades, although a few manufacturers provide decently flowing intake manifold.

Larger 1ND-TV valves, getting port matching and head flowing will also improve bhp, & more importantly will allow you to get a greater bhp increase on other upgrades.

1ND-TV performance cam tips.

Different 1ND-TV engines respond better to more aggressive cam durations check your engine on a rolling road.

The map and fuel pump and injectors also have a large bearing on the bhp gains you'll achieve.

Extending exhaust or intake 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.

Altering your 1ND-TV cam will make a dramatic difference to the engine torque. Choosing a higher performance cam profile raises the torque accordingly.

NB: Fast road cams commonly increase the performance throughout the rev range, you may lose a little bottom end power but high end rpm power will be lifted.

Motorsport cams, increase the high end rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers.

In a typical daily driver you need to match your torque band to your cars usage.

I'd be shocked if you have found a 1ND-TV Competition camshaft is a pleasure to live with when in heavy traffic.

Stage 1, 2 and 3 mods for the 1ND-TV

Before we break the best tuning upgrades down into stages of tune, let's list the most effective tuning upgrades for you.

  1. Suspension Upgrades - always improve your cars handling
  2. Brake Upgrades - Even before adding power improve those brakes
  3. Intake - make sure the intake is not restricted, use filters and intake upgrades to improve this
  4. Exhaust - as with 3 ensure there is not restriction in the exhaust, cats are the usual bottleneck
  5. Tunes - remapping, piggyback ECU's and aftermarket ECU's can all make decent gains
  6. Fuelling - when you've increased power you'll need to match this with more fuel
  7. Turbo upgrades - Improving the intake with a large turbo and better flowing intercooler will be the biggest power gain you'll see (but one of the most complex).

This video guide to tuning cars is a great starting point to work from in your project.

Stage 1 1ND-TV parts:

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

Stage 2 1ND-TV parts:

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

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

Stage 3 1ND-TV parts:

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

The 1ND-TV units respond well to upgrades and thanks to their popularity there are plenty of mods and tuning parts about.

A remap allows a tuner to release the full potential of all the mods you've done to your 1ND-TV.

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 your results usually depend much on the mods you've carried out and the condition of your engine.

Turbo modifications on the 1ND-TV

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 1ND-TV.

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.

If your motor has forced induction upgrades are going to net you a larger power gain and most turbocharged engines are made using more solid components.

However every engines will need better parts at higher power limits

Research these limitations and upgrade to better quality crank and pistons to utilize the power.

We've seen people spending a loads on turbocharger upgrades on the 1ND-TV only to have the motor explode when it's completed.

Larger turbos will usually suffer no power at low rpm, and small turbos spool up more quickly but do not have the peak end torque gains.

Thanks to new tech the choice of turbo chargers is always improving and we are seeing variable vane turbo chargers, permitting the vane profile is altered according to speed to lower lag and increase top end power.

Twin scroll turbo chargers divert the exhaust flow into 2 channels and push these at differently designed vanes in the turbo charger. They also increase 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 complex to setup. We have this article covering twinchargers if you want to read more.

Tips about fuel supply on the 1ND-TV

When you increase the bhp and torque you will need to ramp up to the fuel system.

More bhp and torque needs more fuel. We strongly recommend you to over specify your injector capacity.

As a rule of thumb add 15% when specifying an injector, this takes into account 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 1ND-TV performance exhaust upgrades

You only need to to boost your exhaust system with an upgraded one is if the current exhaust is actually causing a restriction.

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

Don't go with the largest exhaust you can buy this will reduce the exhaust flow rate - the best exhausts 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.

Usual exhaust restrictions come around the catalyst and filters installed, so adding a faster flowing high performance alternative will help avoid this restriction.

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

Faults issues and things to look out for on the 1ND-TV

Like most engines an 1ND-TV, 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 1ND-TV, failure to do this will exacerbate engine wear, on a tuned 1ND-TV 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 1ND-TV why not pop over to the forums at TorqueCars where you can chat about 1ND-TV tuning options and read about others projects who may be planning to do similar modifications on their 1ND-TV.

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