| Toyota OEM Mild Steel | Janspeed Mild Steel | Janspeed Stainless Steel | Magnex Stainless Steel | Mongoose Stainless Steel | |
|---|---|---|---|---|---|
| Cost (£approx) | 350.00 | 350.00 | 325.00 | 335.00 | |
| Warranty | 3 years? | 1 year? | Lifetime? | Lifetime | Lifetime |
| Build quality | Average | Excellent | Excellent | ||
| Flexipipe | Yes | None | Yes, shorter than OEM | Yes, length please? | |
| Fitting | Bolts straight on | May require slight rolling of exhaust notch in the rear valance, and slight trimming of offside rear exhaust mount (clearance for the thick triangular tailpipe support/mount is tight) | May require slight adjustment of clamp which hold exhaust hanger nearest to the flexipipe section to make sure it is hanging freely without touching anything. | ||
| Remove heat-shield under rear boot? | No | No | Sometimes, although adjustment of clamp holding exhaust hanger nearest to the flexipipe section should make sure exhaust is clear of the heat-shield. | ||
| Approx power gain over OEM | 0 | 5% | Small | Small | |
| Sound - tone | Not particularly sporty | Metallic and raspy at low revs, deep and resonant at high revs | Deeper note than OEM | Deeper note than OEM | |
| Sound - loudness in the cruise | Not particularly loud | Somewhat louder than OEM | Slightly louder than OEM | Slightly louder than OEM | |
| Sound - loudness at full throttle | Not particularly loud | Very loud indeed! | Louder than OEM, but not deafening | Similar to OEM | |
| Trackday noise tests | 102dB, so illegal for Bedford, Bruntingthorpe, Castle Coombe, Goodwood and Thruxton. | ||||
| Notes | Tend to corrode away shortly after 3 year warranty has expired! | Tend to corrode away shortly after 1 year warranty has expired! |