Using the Tooth Logger and Composite Logger

The tooth logger and composite logger TunerStudio’s tooth logger and composite logger are powerful tools for troubleshooting problems with the MegaSquirt’s RPM input. These are both under the Diagnostic and High Speed Loggers menu. The tooth log records the time between individual pulses from the crankshaft position sensor. The composite log works similarly to a…

AMP EFI transmission control documentation

AMP EFI offers complete turn-key plug and play transmission controllers for GM / Chevy transmissions. Currently, we offer programmable 4L60E transmission controller and 4L80E transmission controller packages. You can also use a standard MicroSquirt ECU package and load it with transmission control firmware to control other transmissions, such as the Ford 4R70W and 4R100W. Converting the…

MS3Pro Failsafe Features & Engine Safeties

Certain engine failures, like a broken timing belt, are beyond any ECU’s control. However, MS3Pro can detect other failures and take action—either shutting down the engine to prevent damage or making adjustments to keep it running until the issue is resolved. These failsafes are available across the MS3Pro and MS3 series (V3.0, V3.57, PNP, Gen…

PAY OVER TIME, ON YOUR TERMS

DIYAutoTune has partnered with Affirm to offer our customers easy, affordable financing for your engine management system needs! Instant decision, no hidden fees or surprises. See below for more information and frequently asked questions. Choose 3, 6, or 12 Monthly Payments CLICK HERE to Prequalify Now How to make a purchase with Affirm: Shop with…

DIYAutoTune/AMPEFI Dealers – The Best in the Business!

Find Your Local Authorized DIYAutoTune Dealer DIYAutoTune has developed strong relationships with qualified dealers of our MS3Pro, MSPNP, and MegaSquirt products worldwide, many of which can provide turn-key solutions for race programs just like yours! Contact a trusted dealer in your area today!   Become an MS3Pro / MSPNP / MegaSquirt Dealer Today! Join our…

Using the Chevy Vortec ignition module

A basic ignition module While some MegaSquirt versions have ignition modules built in, many versions do not, including the MicroSquirt, wire-in MS3Pros, and many others. These have 5 volt logic level spark outputs instead. If you need to run a distributorless ignition where the coils need an external ignition module, our QuadSpark is a great…

Using the HSD-4 High Side Driver

HSD-4 High Side Driver Module Overview The HSD-4 high side driver module provides four high side drivers for solenoids that need 12 volt power instead of ground. Wire a ground triggered output from an MS3-Pro, MicroSquirt, or MegaSquirt to the HSD-4’s input, and it will supply a 12 volt output with up to 8 amps…

MS3Pro LS Plug and Play Harness Alternator Lead Extension

SKU: HRN_MS3Ph-LSAlt

30″ extension for GM LSx alternator subharness.  Our harness will require this if used with Camaro, Firebird, GTO, or CTS-V accessory drives. You can also use this with aftermarket brackets that move the alternator to a low mount position or relocate it to the passenger side. We’ve populated all four wires, so this extension isn’t…

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DIYPNP Sequential Injection

Sequential Injection The MS2/Extra 3.0.3 and higher code allows for 4 channel sequential injection with a DIYPNP. This can run sequential injection on a 4 cylinder, or semi-sequential on a 6 or 8. To use this, you’ll need our DP_SEQMOD-K add on board. It attaches to the proto area with the included 10 pin header;…

DIYPNP Sequential Injection

Batch versus Sequential Fuel Injection Check out Chapter 4 in the EFI Tuners Guide for more information on the benefits of sequential versus batch fuel injection. DIYPNP Sequential Injection The MS2/Extra 3.0.3 and higher code allows for 4 channel sequential injection with a DIYPNP. This can run sequential injection on a 4 cylinder, or semi-sequential…