Swaim Performance Solutions, LLC We are a performance shop conveniently located between Huntsville and Birmingham. Specializing in EFI conversions and EFI tuning using our 2wd chassis dyno with Eddy. Swaim Performance Solutions, LLC We are a performance shop conveniently located between Huntsville and Birmingham. Specializing in EFI conversions and EFI tuning using our 2wd chassis dyno with Eddy Brake. BMW tuning packages and upgrades Birds signature B-Series Packages combine exclusive power, chassis, brake and differential upgrades designed for road performance. We work with the world's leading tuning brands, industry consultants and professional drivers to achieve pure driver appeal and superior performance from our cars.

BMW tuning packages and upgrades

Birds signature B-Series Packages combine exclusive power, chassis, brake and differential upgrades designed for road performance. We work with the world's leading tuning brands, industry consultants and professional drivers to achieve pure driver appeal and superior performance from our cars.

About Birds

Birds is an independent BMW specialist and tuning company based in South Bucks, United Kingdom. Our history with BMW..

Autocar and Birds have collaborated over the past 6 months on a project car, a BMW F21 M135i, by upgrading many different aspects of the model which are all included in the Birds B1 Complete Conversion package.

Audi Auto

The contents of the Birds B1 Complete Conversion:

• The Quaife ATB limited slip differential
• Birds own B-Series Sport Suspension kit..

'The meaty engine responses are sharp without being edgy and delivered without the faintest hint of reactive nerves from the chassis. Although the helm answers inputs alertly and accurately, it filters out the rigours of bumpy roads with poise..'

Read EVO Magazine's full review of our M235i, equipped with our signature B-Series Sport Suspension kit.

'Our M135i out-punches the M2 by 25bhp and 51lb ft of torque, so it feels stronger through the mid-range and more urgent near the redline. But with less power to deploy to the road, and wider tyres with which to do it, the M2 does have better traction..'

Read Autocar Magazine's review of our B1 M135i upgrades and comparison to BMW's M2 here!

'Without exaggeration, the B2 conversion is transformative. There’s more composure in the ride quality and the uprated suspension is much better equipped to deal with uneven roads. The car actually smothers and absorbs the road surface rather than lolloping about all over it, giving you real confidence..'

Read more on Autocar's review of our Birds B2 M235i by following the link below!

Birmingham Bmw Auto Tuning For Sale

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'Working with BMW tuners Birds, we’re going to replace the standard, under-specified suspension with much higher-quality Bilstein components tuned specifically for the M135i, we’re going to fit a Quaife limited-slip differential and we’re going to lift power to somewhere approaching 400bhp. We might yet make a few other modifications, too..'

/cooking-with-love-torrent-download.html. Birds are the exclusive worldwide distributor for BMW and Mercedes Quaife ATB Differentials.

Birds B-Series Suspensions include specially valved Bilstein shock absorbers and accompanying bespoke Eibach springs, designed to improve ride and handling on U.K roads.