BMW F32 Tuning

"Tuning guide to the greatest BMW F32 modifications."

The coupe version of the BMW 4 Series was known as F32. The vehicle remained in production from 2013 to 2020.

It was launched to replace the coupe and convertible variants of the BMW E92 and E93. The car had a lot of resemblance with the F30 (BMW 3 Series).

A site visitor recently commented asking for more information on the F32 and how to tune it up and modify it, so we've created this web page to go over what we feel are the primary areas we rate and are the best modifications you can do to this car. The F32 is proving to be an awesome car tuning project.

During the years of its production, the F32 was offered in a total of 18 different variants which included 12 gasoline and 6 diesel models.

The gasoline engines had power ranging between 184 HP and 306 HP whereas the diesel models had power between the range of 184 HP and 313 HP. The different variants of the car included:

Petrol- turbocharged:

Diesel- turbocharged:

Gasoline Variants power and transmission varies

  • 420i 6MT having 184 HP and 199 lb-ft at 1250 to 4500 RPM;
  • 420i 8AT having 184 HP and 199 lb-ft at 1250 to 4500 RPM;
  • 420i 6MT having 184 HP and 199 lb-ft at 1250 to 4500 RPM;
  • 420i xDrive 8AT having 184 HP and 199 lb-ft at 1250 to 4500 RPM;
  • 428i 6MT having 245 HP and 258 lb-ft at 1250 to 4800 RPM;
  • 428i 8AT having 245 HP and 258 lb-ft at 1250 to 4800 RPM;
  • 428i xDrive 6MT having 245 HP and 258 lb-ft at 1250 to 4800 RPM;
  • 428i xDrive 8AT having 245 HP and 258 lb-ft at 1250 to 4800 RPM;
  • 435i 6MT having 306 HP and 295 lb-ft at 1200 to 500 RPM;
  • 435i 8AT having 306 HP and 295 lb-ft at 1200 to 500 RPM;
  • 435i xDrive 6MT having 306 HP and 295 lb-ft at 1200 to 500 RPM;
  • 435i xDrive 8AT having 306 HP and 295 lb-ft at 1200 to 500 RPM.

Diesel Variants power and transmission varies

  • 420d 6MT having 184 HP and 280 lb-ft at 1750 to 2750 RPM;
  • 420d 8AT having 184 HP and 280 lb-ft at 1750 to 2750 RPM;
  • 420d xDrive 6MT having 184 HP and 280 lb-ft at 1750 to 2750 RPM;
  • 420d xDrive 8AT having 184 HP and 280 lb-ft at 1750 to 2750 RPM;
  • 430d 8AT having 258 HP and 413 lb-ft at 2000 to 3000 RPM;
  • 435d xDrive 8AT having 313 HP and 465 lb-ft at 1500 to 2500 RPM.

We see people often wasting money on their F32 doing the wrong mods and then having to start over. Follow our tips to avoid making the common mistakes

Tuning tips and articles

F32 Handling/Suspension upgrades

Improving the handling for car enthusiasts first priority in your F32 tuning project.

Good suspension tweaks that greatly improve handling for the F32 include a couple of degrees negative camber and 1-1.5 degrees of toe (set out to improve cornering or in for better stability) on the front wheels.

Drop the car by as much as 21mm - 43 mm. and fit modified stiffer dampers, bigger drops will need other modifications in most instances.

NB: A BMW with EDC (Electronic Damper Controls) is likely to generate error messages when coilovers are installed.

However, Eibach Pro-Tronic Electronic Suspension Module gets rid of this issue and thus eases the process of installing an aftermarket coilover kit.

The Eibach Pro Street S Coilover Kit for F32 can be used for lowering your F32.

The suspension upgrades can lower your car and reduce the body roll. With several options available in the market from brands including KW, Eibach, H&R, AC Schnitzer and BC Racing you can choose from the following suspension modification options for your F36:

  • Lowering Springs
  • Anti-Roll Bar
  • Cup Suspensions Kit
  • Coilover Kits

F32 Brake upgrade options

StopTech Sport Big Brake Kit
If you are looking for a braking kit for your F32, the StopTech Sports Big Brake Kit is a great option.

You can select the color of the calipers, as well as choose from the drilled or slotted discs.

For dramatically improved stopping put better high friction brake pads and match this with better brake discs.

As a word of warning please note that some performance brake pads can be noisier and will have to be hot before they are effective.

On a road car the brakes are occasionally used, therefore will not be effective so select brake pads which have a low working temperature.

Our aim in engine tuning should be to increase peak power and torque at the top end.

Enjoy your F32 to the full with our great modding advice - do the right mods in the right order.

The best power gains come from larger engine sizes. The more you start with the bigger the return on investment so engine swaps are good value mods for small engined cars.

F32 Power mods.

These mods upgrades are usually carried out by our members, decide how far you want to push your car before you get going.

Getting the best sports modifications for your planned usage of the car is a time and money saver. Stage 3 competition upgrades just won't work well on the road and will make the car undrivable.

Typical stage 1 mods often include: Sports exhaust, Panel air filter, Suspension upgrade (drop 21mm - 43 mm.), Alloy wheels, Remap, Lighter flywheel.

Typical stage 2 mods often include: high flow fuel injector, Power/Sport clutch, Fast road cam, fuel pump upgrades, Ported and polished head.

Typical stage 3 mods often include: Sports gearbox, Engine balancing, Adding or upgrading forced induction (turbo/supercharger), Competition cam, Internal engine upgrades (pistons/head/valves).

You really need to keep as much low end power as you can and aim to achieve a long power band rather than a narrow top end power hike.

Remapping is the way to go on the F32, and there are quite a few tuning modules for the F32, making for a simple power upgrade.

Here are some of the modifications that we have been recommended by our members and readers for your BMW F32. We'd love to hear your suggestions so we can add them to this article.

Sprint Booster V3 for the F32 model. It can be used for increasing the performance of your F32.

Tuning Modules

For tuning your BMW F32, two tuning modules offer great performance, these include:

  • Remus Powerizer Tuning Module

The Remus Powerizer tuning module can easily increase the power and torque of your vehicle by at least 20 units.

For example, the module for the 420i raises the power from 184 BHP to 214 BHP.

  • AC Schnitzer Tuning Module

The AC Schnitzer, like the Remus Powerizer, significantly improves the performance of your vehicle.

  • F36 Sprint Booster V3

Like other BMW models, the Sprint Booster V3 works great for the BMW F36 as well. It is a great part considering its relatively low price.

However, the component is different for manual and automatic versions of the car so getting the correct item is vital.

F36 Advantages Of This Plug & Play Product

The plug and play nature of the spring booster shows instant results by reprogramming the acceleration signals to your stock ECU.

An added advantage of using a component of this sort is that it does not void the warranty of your car.

  • F36 Thor OBD II

The Thor OBD II Wi-Fi Dongle is another great option that can be used for tuning all BMW F Series models.

  • TDi Tuning Car Tuning Boxes

Going for the TDi Tuning car tuning boxes is another excellent option if you want to increase the power and torque of your vehicle by up to 40%.

The whole point of our pointers is to provide a brief overview of modifying mods and point you in the right direction!!

Our forum is best place to go if you need more detailed advice and tips on your tuning project, the best tuning kits and all aspects of modding cars.

The single most cost-effective mechanical sports parts you can do to your NASP engine is to fit a fast road cam. If you can't source a performance cam in your area, then you might find someone who can regrind your stock cam to a more desirable profile.

The exhaust & intake valve timings play a big role in your cars power band, but be careful here, getting this wrong can upset the idle and make the car challenging to drive in traffic. You'd need to follow a cam upgrade with other mods and finish with a reflashed ECU for the best performance gains.

You will need to ensure that the engine is not starved of fuel so will need to uprate the fuelling.

Using high octane fuel is another option if you find you are suffering from detonation or premature ignition on your BMW project after fitting other tuning upgrades. Uprating the injectors is another beneficial modification and will deliver sufficient fuel.

A fuel pump will only deliver a finite amount of fuel, so you may need to uprate this if your injectors are demanding more fuel.

F32 Intake and Exhaust Tuning.

Now we move on to the intake and exhaust and ensure proper flow through the engine. 

Air induction kits are only beneficial to boost power if the air intake is restricted! Adding an induction kit to most stock engines will see LITTLE LOW END POWER GAIN AT ALL.

If you have heavily modified your engine and it's need for air INCREASES DRAMATICALLY then an induction kit is the answer and will help remove this restriction.

Maximum power gains come from a full induction kit with a cold air feed on heavily tuned engines, this can be sited within an air box but a panel filter should suffice for most applications. TorqueCars suggest you use a panel air filter as these are easy to clean and maintain and generally perform better than paper ones.

Sports exhausts can help balance the flow of gases through the engine. But if the exhaust pipe is too large, ie: over 2.5 inches bore, you will lose a lot of your flow rate and end up lacking power and torque.

Although there are a variety of exhaust modification options for your F32, the ones from Eisenmann are the best.

The Eisenmann Performance Exhaust with 2x Tailpipes is a sure-shot way of giving your vehicle a bold look.

You can choose from the Sport (+5DB) or Race (+9DB) options depending upon your choice.

Or perhaps you would prefer a package of parts, and there are quite a few around, most will comprise of an intercooler, downpipe kit, and map, but please note that removal of the catalysts or even replacement with a sporty alternative is not legal in many areas or countries.

Wagner Tuning F-Series EVO1 N20 Competition Package

Although this package costs £1425, still the performance it provides is remarkable. So, if you are looking for a power and torque increase, this is the package you should install in your F32. But note that cat removal is not legal in most areas, but a performance catalyst option works virtually as well as a catless header.

Getting a professionally gas flowed head with larger valves can fully release the engines power. A good triple plate fast road upgraded clutch will help to keep that power going where it should. Never skimp or assume a standard clutch to cope. The best mods we would do for your F32 are Remapping or piggy back ecu, fast road cam and air intake and exhaust.

NASP engines do not achieve big power gains if you remap them, unless you have done extensive modifications. With turbocharged engines this is another story. A remapped turbo will give massive power gains and take full advantage of the strength of the block.

We've also come across some owners playing with twincharging applications and making some impressively high power hikes.

The most impressive power gains for NASP engines usually involve the addition of forced induction. Turbos are often harder to add than a supercharger. It is harder to map a turbo as the boost builds exponentially with revs.

It is more straightforward to map a supercharger because the boost is proportional to engine speed on a linear curve. Adding forced induction will usually require a lower compression ratio or water injection.

F32 Alloy wheel upgrades.

Alloy wheels can help the brakes cool down and are generally lighter than steel ones. Further improvements can be made to your cars handling with the addition of directional tread pattern tire. Large F32 alloy wheels can decrease performance. If you get big alloy wheels you will be changing your final drive ratio.

Because of this we would advise sticking to a maximum wheel size of 18 inches, although we know some of our members have fitted larger wheels with no problems. Your BMW F32 can be equipped with a variety of alloy wheels ranging in size from 17" to 20".

Most of the feedback we get states a preference for 17's and 18's in terms of handling characteristics, so although larger wheels look nice, they don't necessarily improve the handling in everyday driving. On a dry flat track there might be a case for bigger rims, but the added weight is not a good modification, especially as this weight is not supported by the suspension and will adversely affect the wheels turning response.

For more information on Tuning your car please join us in our friendly forum where you can discuss F32 options in more detail with our F32 owners. It would also be worth reading our unbiased BMW tuning articles to get a full grasp of the benefits and drawbacks of each modification.

Please help us improve these tips by sending us your feedback in the comments box below.

We love to hear what our visitors have got up to and which mods work best for them on each model of car. Comments are used to improve the accuracy of these articles which are continually updated.

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