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Description
Product Description
- Up to +8bhp throughout rev range
- Up to +7NM Torque throughout the rev range
- Induction kit and inlet hose included
- Improved induction noise
- Full instructions
- Prepreg 2x2 twill formed carbon fibre
- Lifetime warranty
This product is a direct replacement for OEM part numbers 13718601678, 13718605164, 13718601682.
When our development team analysed the OEM airbox and inlet tract on the BMW M140i kindly loaned to us from The Performance Company, we could see some obvious gains that could be had across the platform. As such we wasted no time in comparing the B58 powered M140i with a B48 powered BMW 230i and were able to locate some useful similarities between the two. Therefore, we came up with a multiple part solution to maximise all areas.
The Development Journey
Step 1: UK and some EU spec F chassis BMW’s have a blank which stops the low-pressure zone that builds up in front of the radiator from entering the inlet tract. We created FMINLD2, a carbon fibre sculped duct to replace the blank, and route more air into the tract towards the airbox.
Step 2: Now that this greater quantity of air has entered the airbox, we need a greater surface area of filtration to maximise the airflow towards the engine. Therefore, we decided on a high-flow performance cone filter and used our development of other upper airbox induction kits to inform our design process to create FMINDK55.
Step 3:The weak link was now the OEM inlet hose with its sound resonator and accordion ribs which cause turbulence and slow down the airflow. We created a multi-ply smooth silicone to significantly reduce turbulent airflow, and to handle tuned vehicles with ease.
We used SolidWorks CAD, 3D prints and numerous dyno sessions to truly unlock the power. Simulation testing played a large part in the design process to help maximise the airflow.
We were able to experiment with the airflow entering the chamber from the inlet tract into the lower airbox, by changing the position of the filter, the size and location of the louvres and other variables to ensure that the intake is maximising performance.
The 3D printed prototypes helped with comparing our simulation testing to real world driving conditions.
Please see our video on YouTube which shows dyno testing of our final prototype. This is a valuable comparison that is used in the top tiers of motorsport, now being brought to your vehicle.
The Carbon Fibre
Using carbon fibre brings obvious benefits of strength, lightweight and aesthetics. However, a part that is often forgotten is its low thermal conductivity, which means it reduces heat soak and transmission of said heat to nearby items. Keeping Inlet Air Temps (IAT’s) low is often a difficult part of developing induction systems, so replacing metal or plastic inlet solutions for FMINDK55 will help decrease IAT’s and increase the volume of air supplied to your vehicles engine that is compressed by the turbo charger.
This has a better effect on performance when cool as this is to provide the engine with more oxygen (denser air), thus improving the combustion in each cylinder. In addition, by regulating and reducing the air temperature, it also increases the reliability of an engine by keeping the AFRs (Air Fuel Ratios) in each cylinder at a safe level, which in turn, can increase an engines power due to the air being cooler. A bigger bang is then created within the cylinder, providing the correct amount of fuel is added. This can equate to an increase in BHP and torque.
The Inlet Hose
The sound resonator and accordion ribs on the OEM inlet hose cause significant turbulence to the airflow causing a detriment to the engine’s potential performance. Our improved solution gives you a host of performance upgrades, including:
- Improved induction noise.
- Multi ply silicone construction improves longevity over that of the OEM hose.
- 5 ply silicone construction will be able to handle strain of engine mapping far better than OEM hose.
- Increase of diameter at airbox end from 85mm to 90mm.
- Lifetime warranty.
Testing
Testing was completed using Performance Remap in Gloucester with their VTEC 4 wheel drive dynamometer. This was to ensure all our data has been achieved with results as accurately as possible by an independent tuner. The results below speak for themselves, also with the added benefit of being a very easy component to fit with no specialist tools this is superb, affordable modification for the BMW enthusiast.
INDK55 picks up peak performance gains as well as smoothing out the curve throughout the rev range. Between 3500RPM and 3900RPM there is an increase of around 7NM, which is where the vehicle is happily in boost and utilising the increase of cold, de-restricted air. This is at the exact point in the rev range where you will feel the punch of power, either in day to day driving when you’re picking up throttle, or at apex to corner exit where you get back on the power!
The BHP curve with FMINDK55 is smooth and consistent, with a slight increase in power that coincides with the 7NM gain discussed above. However, the most notable gain is from 5900RPM onwards, where there is a significant increase compared to stock. This increase shows a much flatter curve, rather than the drop shown by the stock setup where the engine effectively runs out of air. This is an increase of around 8BHP and lasts for 700RPM all the way to redline.
The M230i tested on the dyno was completely stock, but with a tuned vehicle you will see greater percentage gains as the vehicle will be able to utilise the large increase in volume of cold air.
FMINDK55 is part of our acclaimed Hi Flow range and will ensure that your vehicle is getting critical cold air. Not only is the Forge part a better option for performance, but the carbon fibre really helps to give the engine bay some character. The weave of the carbon has been optimised to match the carbon on the intake manifold, which really shows the level of detail we put into our designs. The high-quality carbon fibre is prepreg 2x2 twill formed in an autoclave from billet tooling and finished with an anti UV gloss gel coat. The Forge Motorsport lifetime warranty* on all hardware products shows the trust we have in the quality of our products while they are being enjoyed on your pride and joy.
The kit comes complete with everything you need for installation which can be carried out in around 1 hour, including a set of full colour instructions. For such an easy to fit product it truly does create some remarkable gains. If you are looking at whether FMINDK55 fits a vehicle not specified in our compatible vehicle listing, please check if your OEM upper airbox has a channel for the strut bar to fit through, if it does FMINDK55 will not fit your vehicle. Please contact us with a photo of your engine bay if you have any questions.
This induction kit will not fit vehicles with the 306bhp B48. This induction kit only fits B46/ B48’s fitted with the MAF design as below, not the temperature sensor variants.
Induction Kit and Inlet Duct Package
FMINLD2 is a simple bolt-on product which is easy to fit in approximately 45 minutes with no specialist tool, drilling or cutting required. Not only is the Forge part a better option for performance, but the carbon fibre really helps to give the front of your BMW a pleasant aesthetic appearance. The high-quality composite fibre is manufactured from 100% prepreg 2x2 carbon fibre twill formed in an autoclave from billet tooling and finished with an anti UV gloss gel coat.
Get 10% off FMINDK50 and FMINLD2 when bought together (code automatically applied at checkout)
*Please note - the filter is excluded from the Forge lifetime warranty*. We can confirm this part fits with the Speed Engineering lower airbox.
Complimentary Products
Please Note: In line with our policy to constantly review, revise, and improve our product range, the appearance of the product you receive may differ from the one advertised.
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Compatible Vehicles
Instructions
Induction Kit for BMW B46/B48 (120i, 125i, 220i, 230i, 320i, 330i, 420i, 430i)
Warranty
Warranty Infomation
All Forge Motorsport products come with a limited lifetime warranty. All warranty claims must be accompanied by the original proof of purchase to enable us to help you. Failure to supply this proof will result in your claim or enquiry being denied.
For further information, please call our customer service team on +44(0)1452 380999 or email info@forgemotorsport.co.uk.
Do not use aggressive (acidic) car cleaning products, particularly traffic film remover solutions or shampoos to clean your intercooler, radiator or oil cooler. The use of these products can damage Forge Motorsport cooling systems and invalidate your warranty. These are often found at car washes. A light, warm, soapy solution (free of harsh acidic cleaning compounds) should be used to clean you cooler and thoroughly rinsed away. We recommend that you should inspect your product on a regular basis for bent and/or crushed fins. Any bent fins should be carefully straightened to allow ambient air to pass through the core face. At the time of installing your Forge radiator, an approved coolant must be used and added to the coolant system. Be sure you never mix coolant and always use distilled water.
Shipping
Shipping
USA Deliveries
All Deliveries are sent via Fedex. We cannot guarantee delivery timelines as all orders are up to shipper schedules and routes. Delivery fee is a Flat Rate of $20 fo all orders over $20. Orders below that value are costed out based on weight. Signature required may be added to your package. Orders can not be re-directed, held, or re-scheduled.
Shipping outside of the Lower 48- Duty Charge Information
All Forge products are sold with a Delivery Duty Unpaid (DDU) status and an import tariff may apply to your order. Customers will be contacted by the Customs and Excise authority in the destination country regarding payment prior to delivery, and it is important that correct contact telephone number and email information be submitted with the order to facilitate this part of the delivery process.
Our shipping methods ensure safe and timely delivery of your new Forge products. For further information on cost and delivery times, please contact Forge using the info@forgemotorsport.com email address if you require any more information. We reserve the right to change the delivery service and company at any time.
***Once a product has left our warehouse and is in the possession of the shipping company, any claims must be made directly with that shipper however we can assist with most cases.
