What peak boost is shown on this dyno sheet?

The table shows a peak boost of 21.99 psi occurring at 97 mph and 4774 rpm, and the boost graph peaks around 22 psi (scale tops at 22.2 psi).

What vehicle/run is this dyno sheet for?

The Run ID is 'KOVACH STG3 SRT4-2', in folder 'UMS', dated 26-Apr-2007 12:10:42.

Where and on what equipment was this dyno run performed?

It was run at Xact Dyno in Tempe, Arizona on a Dynapack chassis dynamometer, using software RHAS-SP V1.3-03E (4WD - Motor Vehicle 2000+4000).

What boost is shown at the top of the run?

At 5939 rpm / 121 mph the sheet lists 16.72 psi of boost, with the run ending at 6000 rpm and 122 mph.

What is the gear ratio and boost gain listed?

Both ratio fields show 3.448; vacuum gain is 0.0 and boost gain is 5.3.

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SRT-4 Stage 3 Dyno Sheet - 22 psi Boost Curve, Xact Dyno Dynapack 2007

Dynapack Xact Dyno Chart Manifold Boost Pressure vs RPM Peak 16.72 psi

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Dynapack chassis dyno graph plotting manifold boost pressure (and vacuum) vs RPM, peaking around 16.72 psi boost at 5939 rpm on a turbocharged 4WD run.

AI caption April 2007 · Photo 525 of 673

This is a chassis dynamometer printout from Xact Dyno (Tempe, Arizona), produced on Dynapack chassis dynamometer software (RHAS-SP V1.3-03E, 4WD - Motor Vehicle 2000+4000). The sheet plots manifold pressure (MAP) versus engine RPM from roughly 1775 to 6000 rpm. The upper graph shows boost pressure in psi, peaking around 22 psi in the 3400–4800 rpm range before tapering to roughly 17 psi at 6000 rpm; three overlaid traces (dark blue, light blue, yellow) compare runs, with the dark blue run building boost noticeably earlier (spooling by ~2900 rpm versus ~3200 rpm). The lower graph shows vacuum in inHg, holding near 0.0 throughout the pulls. The data table reports for the yellow-highlighted run: 0.00 vacuum, 122 mph, 6000 rpm, ratio 3.448, with 16.72 psi boost at 121 mph / 5939 rpm; the green-highlighted run shows 0.00 vacuum, 122 mph, 6000 rpm, and peak boost 21.99 psi at 97 mph / 4774 rpm, boost gain 5.3. The run is identified as Folder: UMS, Run ID: KOVACH STG3 SRT4-2, dated 26-Apr-2007 12:10:42. Despite being filed under a 1996 Ford Probe, the Run ID indicates a Stage 3 Dodge SRT-4.

This document covers 2007, which may differ from this 1996 Ford Probe.

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Frequently asked questions

What peak boost is shown on this dyno sheet?: The table shows a peak boost of 21.99 psi occurring at 97 mph and 4774 rpm, and the boost graph peaks around 22 psi (scale tops at 22.2 psi).
What vehicle/run is this dyno sheet for?: The Run ID is 'KOVACH STG3 SRT4-2', in folder 'UMS', dated 26-Apr-2007 12:10:42.
Where and on what equipment was this dyno run performed?: It was run at Xact Dyno in Tempe, Arizona on a Dynapack chassis dynamometer, using software RHAS-SP V1.3-03E (4WD - Motor Vehicle 2000+4000).
What boost is shown at the top of the run?: At 5939 rpm / 121 mph the sheet lists 16.72 psi of boost, with the run ending at 6000 rpm and 122 mph.
What is the gear ratio and boost gain listed?: Both ratio fields show 3.448; vacuum gain is 0.0 and boost gain is 5.3.