Modding tuning and best performance upgrades on the BMW S58B30T0 engine!

Car tuning tips:S58B30T0 Modifications"

S58B30T0 Modifications Guide

How to modify and upgrade the BMW S58B30T0

"Comprehensive guide to tuning the BMW S58B30T0 engine!"

Our friends at TorqueCars are regularly getting messages about how to improve the S58B30T0 from people inquiring about getting more power from the S58B30T0 and wanting to know what are the things tuners recommend when it comes to S58B30T0 upgrades. So let us look into BMW S58B30T0 modifications and outline the best upgrades on this great engine and point out some problems along the way.

The BMW S58B30T0 are awesome to work on and with carefully picked performance upgrades like remaps, turbo improvements and camshafts you will noticeably enhance your driving experience.

Let us review and look at S58B30T0 tuning and report on the premier modifications.

Just because particular mods are appear in lots of S58B30T0 projects it doesn't mean you should fit it, we shall focus on the ultimate mods that will give your S58B30T0 the biggest power gain return for your cash.

Without us subscribing to the common myth of 'if it's shiny and makes more noise it must be good' you seem to get in many tuning magazines and on car forums'.

S58B30T0 induction kits

Improving air intake on the S58B30T0

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

So the aim to any engine tuning task to pull fuel and air into the S58B30T0 engine but this has a knock on effect with the air flow sensor.

It is common that there's a limitation in the air flow sensor MAF/MAP on the S58B30T0 when a lot more air is being pulled into the engine.

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

Headers take the on the suck phase from the filter and allow it to be sucked into the engine cylinders with fuel for the squish phase.

The size of bore and shape and flow characteristics of the Plenum can make a large improvement to fuel atomisation on the S58B30T0.

Commonly we find the plenum chambers are begging for a performance upgrade, although some car makers provide reasonably well designed plenum chambers.

Big valve conversions on the S58B30T0, getting port work and head flowing will also raise torque, and importantly will raise potential for a better torque increase on other parts.

S58B30T0 performance cam tips.

Each engine responds better to more or less aggressive camshaft durations check your engine on a rolling road.

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

A longer valve duration can alter the torque 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.

Significant air intake, and exhaust improvements on the S58B30T0 can be made from camshaft upgrades. Changing the camshaft profile alters the intake and exhaust durations on the engine and can dramatically change the engines power and power output.

NB: Fast road cams normally increase the power through the rpm band, you may lose a little low down torque but your top end will be better.

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

On a daily driver you need to optimize your bhp range to your driving style.

I'd be gobsmaked if you find a S58B30T0 Motorsport and race camshaft is a pleasure to live with when on the daily commute.

Stage 1, 2 and 3 mods for the S58B30T0

Stage 1 S58B30T0 parts:

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

Stage 2 S58B30T0 parts:

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

Stage 3 S58B30T0 parts:

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

The S58B30T0 power plant respond well to upgrades and thankfully there is a lot of modifications and tuning parts about.
Tuning tips and articles Engine tuning Transmission tuning Care care Intake & exhaust mods Improve handling Forums

Mapping will help release the full potential of all the tuning mods you've done to your S58B30T0.

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 will differs on the tuning mods you've applied and the condition of your engine.

Turbo modifications on the S58B30T0

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 S58B30T0.

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 a car is fitted with a turbocharger upgrades are simpler to install and we find turbo engines are made using strengthened components.

However engines will have power limits

It is important to find these limitations and fit better quality components to handle the power.

There are many guys spending a loads on turbo charger upgrades on the S58B30T0 only to suffer the humiliation of seeing the whole thing go up in smoke soon after it's been completed.

Larger upgraded turbochargers often experience low end lag, and low capacity turbochargers spool up quickly but don't have the peak rpm torque gains.

In the last 10 years the market of turbo chargers is always developing and we now see variable vane turbo chargers, permitting the vane profile is altered according to speed to lower lag and increase top end performance.

Twin scroll turbo chargers divert the exhaust flow into a couple of channels and feed these at differently profiled vanes in the turbocharger. They also help the scavenging effect of the engine.

Beefing up the air intake by adding a supercharger or additional turbo will help you achieve very large bhp gains, although more complex to setup. We have this guide to twinchargers if you want to read more.

Tips about fuel supply on the S58B30T0

You will need to ensure that the engine is not starved of fuel so will have to ramp up the fuelling when you start exceeding 20% of a torque hike. Care modifiers usually say to over specify your injector capacity.

As a rule of thumb add 20% to the flow rate when buying an injector, this accounts for injector deterioration and provides some 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 S58B30T0 performance exhaust upgrades

You may need to boost your exhaust system with an upgraded one is if the existing exhaust is actually creating a restriction in flow.

On most factory exhausts you'll see the flow rate is still 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.

Sports exhausts can help balance the flow of air through the engine.

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

The usual suspects causing problems in your exhaust flow rate can be located the catalysts installed, so adding a faster flowing 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 S58B30T0

Like most engines an S58B30T0, 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 S58B30T0, failure to do this will exacerbate engine wear, on a tuned S58B30T0 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 S58B30T0 why not pop over to the forums at TorqueCars where you can chat about S58B30T0 tuning options and read about others projects who may be planning to do similar modifications on their S58B30T0.

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