BMW Performance Chips & Software for BMW 3 Series E46 (1999-2005)

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Performance tuning for your BMW gives it more efficient and effective ECU mapping which favor power delivery over comfort. BMW tuning legend Jim Conforti produces incredible software tunes for nearly every model to give drivers a noticeable upgrade in their car's capabilities. The Turner Chips, Shark Injectors, Sprint Boosters, and Burger Motorsports tuning software and handheld devices are all right here for you to give your BMW the engine management change it deserves.

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Turner Plug-and-Play IAT Relocation Kit
Turner Motorsport - Corporate Logo
T#:391751
Part#: 014579TMS
In Stock
Sale - Save 11% $116.95
Starting at $104.20
Free Shipping
Sale - Save 11% $116.95
Starting at $104.20
Free Shipping

All vehicles will lose some degree of performance due to heat soak under the right operating conditions.  Engine management systems constantly monitor operating conditions and modifying parameters based on sensor inputs. BMW integrated the intake air temp sensor in the MAF housing on models such as the E39 M5, and, being sandwiched behind a hot radiator and in some applications next to an even hotter valve cover, this is less than ideal for performance applications. Absorbing excess heat from its surroundings, the MAF can’t shed it fast enough, and the ECU reads an inaccurately high intake air temperature. Compensating for this false hot air measurement, the ECU pulls timing and runs a richer fuel mixture, resulting in a significant loss of torque.

What can you do?  Locate an intake air temp sensor in a location where it can properly measure incoming air temps and where it's less prone to heat soak. Mounting the sensor further away from the heat source and isolating it from the MAF housing, it can both resist the effects of heat soak longer and respond to temperature changes more quickly.  The result is you’ll experience reduced torque loss and more consistent power output when you’re pushing your engine hard. 

The Turner engineering team was initially skeptical of the claimed performance benefits of this modification. They first set out validate the functionality and performance benefit of a temp sensor relocation. Replicating stop-and-go traffic heat soak in a 2001 540i was a simple task in a controlled environment - their dynometer. First the car was heat soaked to simulate being stuck in traffic or moving at low speeds by running the car four times on the dyno with the dyno's cooling fans disabled. The fans were then turned on for three more runs to observe the recovery rate once air flow was reintroduced. The test: following this procedure once with a stock IAT, and once with their relocation kit in place. 

The result? Turner recovered 11lb-ft torque at 2500rpm through use of their relocation kit, with even greater recovery to be found for M5 owners. Here are the heat soak-related torque losses Turner experienced:

Stock IAT location:
18rwtq at 2500rpm
10rwtq at 3000rpm
9rwtq at 3700rpm

Turner IAT Relocation:
7rwtq at 2500rpm
5rwtq at 3000rpm
5rwtq at 3700rpm

**Click here for installation instructions**

The Turner engineering team designed a complete plug and play kit (unlike all other options on the market) that makes for quick, easy, and reversible installation. Weather-sealed connectors keep out the elements, while sheathed wiring offers a clean appearance underhood. With a harness nearly 3 feet long - the Turner IAT relocation kit offers flexibility in positioning, but not too long that you're left with unsightly excess wiring. Turner recommends positioning the sensor in a location away from engine heat, but still within the intake ducting to achieve accurate intake temp readings - such as the far side of the base of the airbox. Vehicles with cold air intakes with cone-style filters can even position the sensor in the end of the filter. Simply drill a hole in your (cool) location of choice and plug in the harness. More information including installation instructions and some good examples of sensor mounting locations can be found in our DIY PDF. 

We include everything you need to relocate your IAT, just select your desired sensor brand below - Genuine BMW or original equipment Beru.

Also the perfect plug-n-play option for anyone looking to upgrade their intake to utilize an Alpha-N tune!

Note for vehicles with M62 engine: applicable to 1999 and up

Sprint Booster V3 Drive-by-Wire Enhancement Module For 2001+ BMW
Sprint Booster - Corporate Logo
T#:391871
Part#: SBBM1003
In Stock
Starting at $289.99
Free Shipping
Starting at $289.99
Free Shipping

When BMW began using the "Drive-by-wire" throttle system in 2001, a lot of people cringed. The Drive-by-wire system uses electronics to replace the mechanical cable throttle of the past. This means the electronics between the accelerator pedal and motorized throttle must interpret what your right foot does, and ultimately decides how the engine will respond. Although advanced in it's technology and engineering, many of us agree that the Drive-by-Wire equipped BMWs feel unresponsive and lack the crisp, sharp throttle response that older BMWs had with a traditional throttle cable. That's where the Sprint Booster comes in.

The Sprint Booster is an in-line "plug and play" module, that remaps the Drive-by-Wire throttle curve to be much quicker than stock programming. It removes the "lag" or delay that exists in the stock electronic mapping. The result is sharper, quicker throttle response and immediate power delivery.

NEW! The Sprint Booster V3 are now out!

This update brings with it some exciting new features that give you a much wider choice of selections including:

  • 36 Acceleration Programs
  • Valet Mode
  • Pedal Lock Mode
  • 3 year Warranty


We found the difference to be NIGHT AND DAY, and were instantly smitten by the snappier feel the Sprint Booster gave to both a stock BMW as well as on a modified BMW. What's more - the Sprint Booster installs in just a few minutes at the back of the gas pedal. Simply release pedal from the pedal base by unlocking the locking tab, pull the pedal up/foward, unplug the harness, and plug in Sprint Booster. Here's an example of how simple the install is -- installation on an E46 3 series. Full for 3 series installation instructions, click here.

How does it work? The Sprint Booster listens to the pedal input signal, and sends an improved signal to the ETC (electronic throttle control) which has been amplified or "boosted", so that the throttle is more responsive throughout the entire rpm range.


This product qualifies for FREE FEDEX GROUND shipping within the 48 contiguous United States.

The Sprint Booster is available for the following BMWs:
2008+ E82/E88 1 Series including 128i & 135i
2016+ F87 BMW M2
2001-2006 E46 3 Series including 325i, 325Ci, 330i, 330Ci
2001-2006 E46 M3 coupe & convertible (manual & SMG!)
2006+ E90/E91/E92/E93 3 Series including 325i, 325xi, 328i, 328xi, 330i, 330xi, 335i & 335xi
2008+ E90/E92/E93 M3 coupe, sedan & convertible
2012+ F30 BMW 320i 320i xDrive 328d 328d xDrive 328i 328i xDrive 335i 335i xDrive - Sedan
2013+ F31 BMW 328i xDrive 328d xDrive - Wagon
2014+ F34 BMW 328i xDrive GT, 335i xDrive GT - Gran Tourismo
2013+ F32 BMW 428i 428i xDrive 435i 435i xDrive - Coupe
2013+ F33 BMW 428i Convertible 428i xDrive Convertible 435i Convertible 435i xDrive Convertible- Convertible
2014+ F36 BMW 428i Gran Coupe 428i xDrive Gran Coupe 435i Gran Coupe 435i xDrive Gran Coupe
2015+ F82 BMW M4
2001-2003 E39 BMW 525i 530i 540i
2004+ E60/61 5 Series including 525i, 525xi, 528i, 528xi, 530i, 530xi, 535i, 535xi, 545i, 550i & M5
2004+ E63/E64 6 Series including 645i, 650i & M6
2002+ E65/E66 7 Series including 745i, 745Li, 750i, 750Li & 760Li
2003+ Z4 & MZ4 Roadster & Coupe including Z4 2.5, 3.0 and M
2001+ X3/X5/X6 SAV (all)