dbw - BlownByTwins

Block diagram of the Emtron KV12 cruise control path from speed error through the cruise PID, TMF and DBW to the engine, with front axle average speed as feedback

Tuning Cruise Control on a 1,000+ bhp Toyota Supra

How to read a cruise control log on a torque-based Emtron KV12: one sample log from a 2JZ Supra, six checks that derive what P, I, D and base torque are really doing, and the formulas to redo them for your own gearing.

Chart comparing the true geometric open area of an 82 mm butterfly throttle against a linear table, showing the real curve sitting far below the straight line across the lower range

Engine Management Mk4 Supra Tuning

Throttle Body Effective Flow Area: Building a Correct Area vs Position Table

Open any modern standalone ECU that runs a throttle-based air model and you'll find a table mapping throttle position to flow area. Open a dozen real calibrations and a good…

R34 GTR

Rajab Racing Intake Manifold

So after a little chasing, I was able to get in contact with the guys over at Rajab Racing about putting one of their intake manifolds on the car. Awesome.…