Corrected to SAE J607 · 15°C · 1013 mBar

Results, with the working shown

Full sheets, complete curves, correction standard visible. Including the runs that did not go the way we wanted.

New on the record · sheets published

2023 Chevrolet Corvette C8 Stingray, Magnuson supercharged: +120 whp at 6,500 rpm over the kit calibration

The kit calibration peaks at 5,707 rpm and gives back 94 hp by 6,500. Ours holds on — 120 more wheel horsepower at 6,500 rpm.

537.1
Magnuson calibration · 91 octane: 555.5
DEFI calibration · 91 octane: 579.0
DEFI calibration · E30

Read the result and the sheets

Dyno overlay of the DEFI E30 calibration against a Magnuson 91-octane calibration pull on a supercharged C8 Corvette, with the DEFI curve holding power to the end of the pull — DEFI E30 calibration (colour) over the second Magnuson 91-octane pull (white, Ref 809.2). The white power line turns down after its peak; the green one does not.

The build record

Every vehicle tells a different story

Some customers arrive wanting horsepower. Others need drivability, troubleshooting, a calibration for parts already fitted, or a complete engine management solution. These are the ones we have published numbers for — what went on the car, what the dyno read, and why it read that.

9: builds published; Street, muscle and competition
+62.5: hp, largest gain; 2023 Corvette C8 Z06, E85
646.6: hp, highest measured; 2023 Corvette C8 Z06, E85
1: measurement, no tune; Published anyway — that is the point

Browse by what the car is for

Every car we have published a number for

InductionOrder by

Chevrolet
5.5L LT6 flat-plane V8
2023 Chevrolet Corvette C8 Z06
The LT6 goes soft near 5,500 rpm on the factory calibration. On E85 our calibration fills it — 91 more wheel horsepower right there, and 62.5 at the peak.
0650 hp — same scale on every card
Baseline
584.1 hp · 380.9 lb-ft
Final
646.6 hp · 444.3 lb-ft
Gain
+62.5 hp · +63.4 lb-ft · +10.7%
646.6 hp measured at the hubs on E85 (factory baseline) · baseline on the factory calibration
- DEFI calibration, written in 91-octane and E85 versions
Read the breakdown
No photograph of this car on file.
5.5L LT6 flat-plane V8
2024 Chevrolet Corvette C8 Z06
Fifty-nine horsepower out of a naturally aspirated engine that was already barely restricted.
0650 hp — same scale on every card
Baseline
587 hp · 392 lb-ft
Final
646 hp
Gain
+59 hp · +10.1%
646 hp measured at the hubs on 91 octane
- Soler Engineering 91mm throttle bodies
- High-flow catalytic converters
- JLT cold air intake
Read the breakdown
VQ35 V6, Vortech supercharger at 8 psi
2006 Infiniti G35 drift car
Fifty-three horsepower, and almost none of it from adding boost.
0650 hp — same scale on every card
Baseline
357 hp · 260 lb-ft
Final
410 hp · 300 lb-ft
Gain
+53 hp · +40 lb-ft · +14.8%
410 hp measured at the hubs on Ignite E85 · baseline as the car arrived, not factory stock
- Vortech supercharger, 8 psi
- Headers
- Cat delete
- Full exhaust
- Ignite E85 fuel
Read the breakdown
Chevrolet
6.2L LT2 V8
2021 Chevrolet Corvette C8 Stingray
Nineteen horsepower from calibration on pump gas, forty-seven on E85 — within a few horsepower of the last Stingray we put on this dyno.
0650 hp — same scale on every card
Baseline
424.3 hp · 386.9 lb-ft
Final
471.8 hp · 428.8 lb-ft
Gain
+47.5 hp · +41.9 lb-ft · +11.2%
471.8 hp measured at the hubs on E85 (factory baseline) · baseline on the factory calibration
- DEFI calibration, written in 91-octane and E85 versions
Read the breakdown
No photograph of this car on file.
Chevrolet
6.2L LT2 V8, Magnuson supercharger
2023 Chevrolet Corvette C8 Stingray, Magnuson supercharged
The kit calibration peaks at 5,707 rpm and gives back 94 hp by 6,500. Ours holds on — 120 more wheel horsepower at 6,500 rpm.
0650 hp — same scale on every card
Baseline
537.1 hp · 510.2 lb-ft
Final
579 hp · 549.6 lb-ft
Gain
+41.9 hp · +39.4 lb-ft · +7.8%
579 hp measured at the hubs on E30 (Magnuson baseline on 91 octane) · baseline on the calibration supplied with the Magnuson kit, on 91 octane
- Magnuson supercharger system
- DEFI calibration, written in 91-octane and E30 versions
- E30 ethanol blend for the final runs
Read the breakdown
No photograph of this car on file.
Chevrolet
6.2L V8
2018 Chevrolet Silverado 1500 6.2L
Thirty-eight horsepower at the peak. The better number is underneath it: 43 more at 5,000 rpm and more torque everywhere a truck actually works.
0650 hp — same scale on every card
Baseline
366.9 hp · 388.8 lb-ft
Final
405 hp · 438.4 lb-ft
Gain
+38.1 hp · +49.6 lb-ft · +10.4%
405 hp measured at the hubs on E85 (factory baseline on 91 octane) · baseline on the factory calibration, on 91 octane
- DEFI calibration for E85
Read the breakdown
No photograph of this car on file.
Cadillac
6.2L LSA supercharged V8
2013 Cadillac CTS-V
Why the horsepower moved more than twice as far as the torque.
0650 hp — same scale on every card
Baseline
454 hp · 427 lb-ft
Final
483 hp · 440 lb-ft
Gain
+29 hp · +13 lb-ft · +6.4%
483 hp measured at the hubs on 91 octane
- Cold air intake
- Cat delete
- HP Tuners calibration
- 91 octane fuel
Read the breakdown
No photograph of this car on file.
Cadillac
6.2L LT4 supercharged V8
2016 Cadillac CTS-V
A finished figure with no baseline recorded — so no gain is claimed.
0650 hp — same scale on every card
Measured
521 hp · 525 lb-ft
Gain
no baseline recorded
521 hp measured at the hubs on 91 octane
- aFe cold air intake
Read the breakdown
No photograph of this car on file.
Ford
2.3L EcoBoost turbo four
2019 Ford Mustang EcoBoost
A measurement, not a tune — and the best explanation on this page of why your number looks low.
0650 hp — same scale on every card
Baseline
224 hp · 254 lb-ft
Tuned figure
not applicable — factory calibration
224 hp measured at the hubs on 87 octane · baseline factory calibration in place, 87 octane in the tank
- Blow-off valve
- Cat-back exhaust
Read the breakdown
No photograph of this car on file.

Case study · full sheets on file

C8 Corvette Stingray — stock, 91, then E85

One car, one session, three calibrations. The pump-gasoline tune is worth +21.7 hp over stock. Moving to ethanol takes it to +46.8 hp — which is a real gain and also a real trade, because E85 costs fuel economy and is not available at every pump.

1BaselineStock calibration427.9hp @ 6170 rpm
291 octanePump gasoline tune449.6hp @ 6261 rpm
3E85Ethanol calibration474.7hp @ 6219 rpm

Peak torque 443.6 lb-ft on the final run. Baseline 427.9 hp, final 474.7 hp, both corrected to SAE J607 at 15°C · 1013 mBar.

How we measure

Before and after dyno curves overlaid for a C8 Corvette Stingray, showing the gain from a DEFI Motorsports calibration

Baseline dyno pull for a stock C8 Corvette Stingray before calibration

Dyno result showing the horsepower gain on a C8 Corvette Stingray after a DEFI Motorsports tune

C8 Corvette Stingray dyno sheet from DEFI Motorsports in Corona, California

Mainline ProHub dyno sheet for a C8 Corvette Stingray tuned by DEFI Motorsports, showing the full horsepower and torque curves

Second Mainline ProHub dyno sheet for a C8 Corvette Stingray with run conditions recorded

On the hubs

Pulls from the cell

Different platforms, same equipment and the same method. Sound is off by design — what matters here is the mounting, not the noise.

What is not on this page yet

The 9 builds above carry the figures the shop recorded. The stock-to-E85 C8 Stingray session is fully documented, and 4 builds have its sheets published — but those screenshots still do not show the correction standard, and the rest are peak numbers without the ambient conditions or the correction standard that produced them. That is exactly the thing this site argues you should not accept from anybody, including us. Every customer leaves with their own sheet, so the material exists; it needs collecting, with the conditions block visible rather than cropped.

Want your car on this page?

Every customer leaves with their full sheet whether or not it ends up here. Publishing is your call, and we ask permission in writing before anything goes up.

(951) 405-4465