Telephone (01280) 702389, Fax (01280) 705339
Our MX5 Turbo conversion, commissioned by Mazda UK, brings a new dimension to effortless power and driveability. The technically advanced MX5 turbo kit comprising some 68 parts had to endure over 300 hours dyno testing to extreme conditions plus thousands of miles road testing to prove durability. The heart of the conversion is the Garrett T25 turbo controlled by BBR's advanced engine management control computer. Our turbo conversion kit does not affect the 3 year Mazda UK warranty and is available from 60 selected Mazda dealers.
Cost fitted: Approximately £2,500 including VAT.
Max speed: Std 121mph / BBR 130mph
0-60 : Std 8.7sec / BBR 6.8sec
Power : Std 114bhp / BBR 150bhp
Torque : Std 100lbft / BBR 154lbft (both at 5500rpm)
Featuring: * Garrett T25 turbocharger with integral wastegate control and water cooling * Exhaust manifold cast in high temperature alloy with stainless steel heat shield * Air-to-air intercooler and associated pipework - cast to match existing engine finishes * Competition-standard hoses throughout * Auxiliary engine management computer * Boot phase fuel injection control with 3-dimensional mapping * Super (98 octane) and premium (95 octane) unleaded fuel grade switchover for optimum performance * Standard catalyst retained * Stainless steel exhaust downpipe * Modified sump * BBR Turbo badges * New induction system brace * Modified power steering, water and oil system pipwork * Maximum output: 150bhp at 6500rpm * Maximum torque 154lb ft at 5500 rpm.
"The MX5 Turbo - it impressed us. The new turbo engine package is, not to beat about the bush, staggeringly good, acheived without compromising any of the details that make the original MX5 so appealing" Fast Lane December 1990.
"The real story here is the excellent BBR Turbo conversion - it's fun time! Snap the gear lever through its gate at 6,000rpm and in no time at all your hair will be standing on end. The engine delivers the goods in a superbly consistent rush and with no lag. You could be fooled into thinking there was a normally aspirated 2 litre engine under the bonnet. Power is listed to 150bhp - +32%, so overtaking becomes effortless as the cars looks always promised" Performance Car January 1991.
As an addition we offer our full Phase 2 conversion which brings power up to a shattering 230+ bhp.
THis involves a full engine rebuild with low compression pistons, gas flowed and modified cylinder head, hi flow injectos, modifications to the air flow mass meter, fitting a large capacity intercooler, a full BBR 2.25" stainless steel exhaust system and extensive modifications to the engine management system, plus limited slip differential, full BBR suspension pack and BBR twin stainless steel 'targa' bar.
Power is raised to 232+ bhp with 218lb ft of torque, giving 0-60 mph times of around 5 seconds and 0-100mph in 11.2 seconds!
Cost fitted: £7,495+VAT (including the phase 1 kit).
I recently finished the upgrade of my BBR turbo (Phase I) to a BBR Phase II turbo. I installed the BBR (Phase I) turbo about 2 1/2 years ago. For those of you who may not know the original installation was warranted by Mazda in the U.K. for 3 years or 60,000 miles. It ran at about 5.5-6 lbs of boost and had an intercooler which was located behind the radiator and an air-air oil cooler. The turbo is both water and oil cooled and there is an auxiliary ECU which connects to the Mazda ECU which monitors a variety of parameters including boost and controls a variety of engine functions including timing as a function of boost. The performance claim was about 155 hp and 150 lb-ft of torque with about 85% of the maximal torque at 3,000 RPM. The BBR Phase I turbo is approved for use in all 50 states in the U.S. The derivability is excellent and there is virtually no turbo lag. There is a switch which attaches to the BBR ECU which is mounted in the armrest/storage compartment which alters the timing so the engine can use 87 octane (with slightly less power at very high RPMs) instead of 92 octane.
There was a marked improvement in performance after the Phase I turbo installation compared with the stock car. I didn't test 0-60 times because I didn't want to put any unnecessary stress on the engine and drivetrain. The 50-70 times were for stock: 5th gear, 12 seconds; 4th gear, 8.5 seconds, 3rd gear, about 6.5 seconds. After the turbo installation the 50-70 times were: 5th gear, 6.5 seconds, 4th gear 4.8-5 seconds, 3rd gear, 3.7 seconds. 60-80 times are even faster because there is higher boost at higher RPMs. All in all a marked improvement without any decrease in gasoline mileage.
After several years I decided to go for the Phase II upgrade. BBR charged $1,000 for the upgrade. This includes installing an new intercooler in front of the radiator and removing the one behind the radiator. Bill Cardell at the Dealer Alternative did a great job installing the new intercooler and removing the old one. I then sent back the auxiliary ECU which was redesigned and reprogrammed for higher boost and for remapping the air-fuel delivery at higher boost. The Phase II can run at 10 lbs of maximal boost. I have mine set at 8 lbs. The 50-70 times now are: 5th gear, 5 seconds, 4th gear, 3.7 seconds, 3rd gear, 2.6 seconds (tested at 80 deg F). I have no idea what the new hp and torque values are but they are obviously much greater than the original Phase I BBR turbo. All this without overheating, knocking, or any decrease in gasoline mileage. Not bad. The people at BBR seem to really know what they are doing.
Herb Samuels
Stainless Steel 'Targa' bar Not actually a roll bar, but looks like one.
Price: DIY £295+VAT, Fitted £345+VAT.
Suspension pack Includes progressive ride road springs, Koni adjustable shocks and front anti-roll bar.
Price: DIY £595+VAT, Fitted £645+VAT.
Non-Catalytic stainless steel silencer
Price: £149.50+VAT
Hi-Flow K&N air filter (included with Turbokits)
Price: £26.95+VAT