Collected my MX5 from BBR today...
Engine spec is now:
BBR 'Super 200' spec cams
BBR custom EcuTek remap
Racing Beat 4-1 stainless exhaust manifold
Milltek exhaust system (mid pipe including 200 cell cat, and backbox)
Pipercross panel filter
The lower lines show how it performed when it went in to BBR, this was before the cams were fitted, the car also had a different map (not a very good one), and a dip in power between 4k and 6.5k rpm caused by a faulty variable inlet manifold runner control mechanism. This fault took a while to diagnose, not something common on these cars..
Before - 174.5 bhp and 150lb ft
After - 200.3bhp and 166lb ft
The curve shows the gains are substantial across the rev range, peak torque at 3450rpm makes it pretty effortless to drive, and it even drives like a standard car at very low revs (will roll along with no throttle in 1st/2nd gears in traffic etc). It drives more smoothly, and is a good bit faster as well.