| Year | 2015 |
| Date | 20-Mar |
| Volume | 214 |
| Issue | 4,504 |
| Page | 434 |
| Category | Internal Combustion |
| Part | 10 |
| Title | Internal Combustion Theory and Practice |
| Author | Ron Wright |
| Notes | A retired technical college teacher provides an in-depth course in I/C. Differential throttles with primary and main throats, exhaust manifolds, exhaust pressure waves, pipe length, application to induction system |