Boost Gauge vs Egt Gauge: Which One Should You Buy?
Boost gauges watch turbo pressure while EGT gauges watch exhaust gas temperature, and the listings here show how each side reads and displays, and how the EGT side warns.
On this page
Top picks at a glance
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- 1
AEM 30-0306 X-Series Boost Pressure Gauge 52mm9.7/10View on Amazon - 2
GlowShift Tan Pod & 3-Gauge Diesel Kit Fits 99-07 Ford Super9.6/10View on Amazon - 3
GlowShift Gray Pod & 3-Gauge Diesel Kit Fits 99-07 Ford Super9.6/10View on Amazon - 4
DriSentri Boost GaugeView on Amazon - 5
OBD2 Gauge DisplayView on Amazon - 6
SINCO TECH Car Digital Gauge 52mm Blue LED Automobile Meter…View on Amazon - 7
Black 52mm 2" Turbo Boost Gauge 0-30 PSI Pressure VacuumView on Amazon - 8
Auto Meter 4305 Ultra-Lite Mechanical Boost GaugeView on Amazon - 9
LKRXW Car Boost Gauge 2" 52mm Auto Turbo Boost Gauge MeterView on Amazon
Verdict: Pick a boost gauge if the job is watching turbo pressure. Pick an EGT gauge if the job is watching exhaust heat and getting an alarm at high temperatures. The boost examples here cannot show exhaust temperature, and the EGT examples here cannot show boost pressure, so the choice follows the reading the driver needs.
A diesel owner watching a turbo on a hard pull wants to know what the turbo is doing and how hot the exhaust is running. boost gauge vs egt gauge frames that choice: a boost gauge watches pressure, while an EGT gauge watches exhaust gas temperature. The listings here give examples on each side, from a mechanical boost kit to a digital pyrometer kit.
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JJCOCO 1800°F Pyrometer Exhaust Gas Temp Gauge Kit
A pyrometer kit reading to 1800°F with a Type K sensor, LED digital display, analog needle and high-temperature alarms.
Pros
- Reads to 1800°F with a Type K sensor
- Programmable high-temperature alarms with flashing display and buzzer
- Peak recall shows the highest reading at a glance
- 90° bend sensor with heat-shielded wiring for harsh locations
Cons
- No boost pressure reading
- No warranty term is stated
- Accuracy of ±1.5% is the maker claim, not a stated certification
- Spec table color is Red only, unlike the Green+Red listing
GlowShift Tinted 7 Color 60 PSI Diesel Boost Gauge
A mechanical diesel boost gauge kit reading 0 to 60 PSI, with a 52mm black dial, tinted lens and a hose and fitting kit.
Pros
- Reads 0 to 60 PSI for diesel turbo and supercharged engines
- 7 color modes and 2 color cycle modes match dashboard lighting
- Kit includes hose, compression fittings, visor and mounting bracket
- Dimmer wire drops brightness by 30% with headlights on
Cons
- Mechanical design needs a boost hose run to the gauge
- No EGT reading, so exhaust temperature stays unknown
- No sensor included; readings come through a mechanical hose
- No peak recall stated in the listing
JJCOCO 1800°F Pyrometer Exhaust Gas Temp Gauge Kit
A pyrometer kit reading to 1800°F with a Type K sensor, LED digital display, analog needle and high-temperature alarms, in Green+Red.
Pros
- Reads to 1800°F with a Type K sensor
- Programmable high-temperature alarms with flashing display and buzzer
- Peak recall shows the highest reading at a glance
- Green+Red color scheme for a different dash look
Cons
- No boost pressure reading
- No warranty term is stated
- Accuracy of ±1.5% is the maker claim, not a stated certification
- Spec table states no weight, unlike the Red listing
DriSentri Boost Gauge, 6032BL 2" 52mm 12V Blue LED
A 12V boost gauge meter reading 0~30 PSI with a blue LED dial, a sensor and a bolts pack.
Pros
- Sensor included in the package, with a bolts pack
- Blue LED dial reads in darkness
- ABS and metal build, described as wear-resistant
- Suitable for 12V models, listed for car, boat, truck and ATV use
Cons
- Range caps at 0~30 PSI
- No warranty term is stated
- No EGT reading, so exhaust temperature stays unknown
- Spec table dimensions exceed the stated gauge diameter
Other tools worth a look
DriSentri Boost GaugeCheck price on Amazon
OBD2 Gauge DisplayCheck price on Amazon
SINCO TECH Car Digital Gauge 52mm Blue LED Automobile Meter…Check price on Amazon
Black 52mm 2" Turbo Boost Gauge 0-30 PSI Pressure VacuumCheck price on Amazon
Auto Meter 4305 Ultra-Lite Mechanical Boost GaugeCheck price on Amazon
LKRXW Car Boost Gauge 2" 52mm Auto Turbo Boost Gauge MeterCheck price on Amazon
boost gauge vs egt gauge Side by Side
| Product | Shop Score | Range | Display | Warranty |
|---|---|---|---|---|
| GlowShift 60 PSI Boost | 9.5/10 | 0 to 60 PSI | Analog, 7 color modes | Not stated |
| JJCOCO EGT Gauge Red | 9.5/10 | 1800°F | LED digital plus analog needle | Not stated |
| JJCOCO EGT Green Red | 9.5/10 | 1800°F | LED digital plus analog needle | Not stated |
| DriSentri Boost Gauge | 9.4/10 | 0~30 PSI | Analog, blue LED | Not stated |
Example figures are manufacturer rated, as published on each listing and collected 4 November 2026.
What each gauge watches
A boost gauge watches turbo pressure. The GlowShift example reads mechanical boost from 0 to 60 PSI for a diesel truck turbo or supercharged engine, while the DriSentri example reads 0~30in.Hg / 0~30PSI for cars, boats, trucks and ATVs. An EGT gauge watches exhaust gas temperature instead: the JJCOCO examples read to 1800°F with a Type K sensor, for gasoline, diesel or modified setups. Neither example here covers the other reading.
Range and display
Range is where the boost examples split: the GlowShift example covers 0 to 60 PSI, while the DriSentri example covers 0~30 PSI plus a vacuum scale to 0~30in.Hg. Display differs by side. The GlowShift example uses an analog dial with a black dial, an illuminated red needle, a tinted lens and 7 color modes plus 2 color cycle modes, with a dimmer wire that drops brightness by 30% when the headlights are on. The DriSentri example uses an analog dial with a blue LED light for reading in darkness. The JJCOCO examples pair a large red LED display with a sweeping analog needle, plus peak recall for the highest reading.
Alarms and warnings
Only the EGT side states alarms. The JJCOCO listings describe programmable high-temperature alarms with a flashing display, an audible buzzer and a red needle warning when exhaust temperatures reach critical levels. The boost listings state no alarms, so the boost listings here state no alarm function.
Fitting and power
Fitting differs by side. The GlowShift kit includes 1/8-27 NPT compression fittings, a 9′ nylon boost hose, a 2′ power wire, a gauge visor, a mounting bracket and bracket hardware, with step-by-step instructions. The DriSentri package includes a gauge meter, a sensor and a bolts pack, for 12V models. The JJCOCO kits include a 90° bend sensor, mounting hardware and a wiring harness, with heat-shielded wiring and anti-seize paste for turbo-downpipe or pre-cat locations. The JJCOCO listing describes self-installation with no professional tools required, stated as the maker claim.
Choose a boost gauge if
- You want to watch turbo pressure while driving
- You want a mechanical 0 to 60 PSI reading or a sensor 0~30 PSI reading
- You want a color-matched analog dial for the dash
Choose an EGT gauge if
- You want to watch exhaust gas temperature to 1800°F
- You want high-temperature alarms with a buzzer and flashing display
- You tune or diagnose gasoline, diesel or modified vehicles
Example gauges
For more choices, see the best boost gauge small and the boost gauge vs vacuum gauge comparison.
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Garage Fit Check
- Space: all four listings state a 52mm gauge diameter, so check dash or pod space for that size before ordering.
- Power: only the DriSentri listing states 12V power; voltage is Not stated for the other listings.
- Fittings: the GlowShift kit uses 1/8-27 NPT compression fittings, while the JJCOCO kits use a 1/8NPT Type K sensor.
- Before running work: confirm the gauge range fits the vehicle, since boost stops at 60 PSI and 30 PSI here and EGT reads to 1800°F.
FAQ: garage tools
Can a boost gauge show exhaust temperature?
No, not the boost examples here. They show turbo pressure only, so exhaust temperature stays unknown with a boost example alone.
Can an EGT gauge show boost pressure?
No, not the EGT examples here. They show exhaust gas temperature only, so boost pressure stays unknown with an EGT example alone.
What range does the GlowShift example cover?
The GlowShift example reads mechanical boost from 0 to 60 PSI, with a 52mm analog dial and a tinted lens.
Do the EGT examples warn at high temperatures?
Yes, per the listings. The JJCOCO examples use programmable high-temperature alarms with a flashing display, an audible buzzer and a red needle warning.
Does the DriSentri example fit 12V vehicles?
Yes, per the listing. It states suitability for 12V models and lists car, boat, truck and ATV use.
Related: the best boost gauge small and the best OBD2 gauge display for diesel trucks.
