Thikpo SMT-108-Pro
A budget gauge-and-flow-meter machine for vacuum and intake leaks. EVAP testing needs a separate regulator.
Amazon $93.99$93.99
The Thikpo SMT-108-Pro is the better automotive smoke machine overall, rated 3.4 to 2.9. The Thikpo SMT-108-Pro leads on value and measurement. The Thikpo SMT-108-Pro costs $106 less ($93.99 vs $199.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Foxwell ST203
A gauge-equipped machine for intake, turbo and exhaust leaks. Skip it if EVAP codes are the main job.
Amazon $199.99$199.99
Which should you buy?
- Choose the Thikpo SMT-108-Pro for value ($93.99 vs $199.99) and measurement (pressure gauge, flow meter vs pressure gauge).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every no EVAP mode stated automotive smoke machine; a clear win is highlighted. How we rank explains each one.
| Factor weight | Thikpo SMT-108-Pro | Foxwell ST203 |
|---|---|---|
| Overall rating | 3.4/5 | 2.9/5 |
| Value 30% | 75 $93.99 | 44 $199.99 |
| Pressure coverage 25% | 36 up to 15 PSI | 43 up to 17.4 PSI |
| Measurement 20% | 80 pressure gauge, flow meter | 40 pressure gauge |
| Features 15% | 45 built-in air pump, fluid included | 50 built-in air pump, air-only mode |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Thikpo SMT-108-Pro | Foxwell ST203 | |
|---|---|---|
| Pressure and smoke | ||
| EVAP mode | No | No |
| Output pressure | 10-15 PSI | 11.6-17.4 PSI |
| Pressure display | Gauge | Gauge |
| Flow meter | Yes | - |
| Air-only mode | - | Yes |
| Power and fluid | ||
| Air source | Built-in pump | Built-in pump |
| Power | - | 12V battery |
| Smoke fluid | maker fluid or baby oil | mineral oil |
| Fluid included | Yes | - |
| In the box | ||
| Cap plugs | 7 pieces | 23 pieces |
| Warranty | 1 year | 1 year |