![]() All relays and fusing live in a single, waterproof fusebox and the fuel pump wiring / relay / fusing is big enough for pumps that can handle 1000whp or more right out of the box (10ga wire, 30amp circuit). Reach the battery under the hood or in the trunk with 4 gauge power & 10 gauge ground wires. Read moreĪll wiring is composed of TechFlex woven, self-extinguishing wrapped, hi-temp TXL & GXL automotive grade wire with OEM Delphi & TE connectors. MS3Pro ULTIMATE GM LS 58x Plug and Play includes an MS3Pro ULTIMATE ECU, TunerStudio software and the most rugged & durable GM 58X custom harness available.ĭeveloped from the MS3Pro 1st Gen platform, the Ulti. MS3Pro ULTIMATE with GM LS 58x Plug and Play Harness From: $2,099.99 Beyond the standard requirements to run your LS engine, what additional inputs (information coming into the ECU from things like sensors & switches) & outputs (commands from the ECU to control solenoids/ relays/ valves/ additional equipment) do you need? If you’re not sure, contact our Tech Team and tell us more about your combo and horsepower goals- we can help.Ĭhevrolet/ GM Gen 3 & Gen 4 Plug & Play Options:.Will you be running hi or low impedance fuel injectors? What does this mean? MS3Pro ULTIMATE will control both, while MS3Pro EVO will only control the more common high impedance injectors.Choosing between EVO and ULTIMATE essentially come down to two basic questions: Both are well equipped for controlling these engines, including the stock VVT (variable valve timing) on equipped Gen 4’s, as well as optional 4L60E/4L80E transmission control if you won’t be running a powerglide. Now that you have identified your power plant, the good news is that AMP EFI offers TWO powerful, affordable plug & play solutions for GM LS Gen 3 (24x) & Gen 4 (58x) engines with a simple drop on harness for either MS3Pro EVO or MS3Pro ULTIMATE ECU’s. LS ENGINE IDENTIFICATION GUIDE courtesy of Summit Racing So, first things first- Let’s identify EXACTLY what LS engine you have by answering a few basic questions: ![]() However, not knowing some subtle differences can propel you down a more expensive, time consuming road. They are also widely available and share a lot of common traits, making many of their parts interchangeable. Your goals may change over time.GM Gen 3 and Gen 4 LS engines are capable of BIG power due to the vast selection of OEM and aftermarket parts & electronics. You'll get support from their experience, and you won't be as limited in the things you wish to change or do. ![]() Thanks for all the help guys If most of your friends have gone Megasquirt, you should probably do the same. For later on I do have one that is the MAF setup so it seems like I could be able to throw a mild cam in it no problem. Honestly though I mostly just want to change some simple things such as I am running a non comp controlled trans and emission delete and stuff like that. I have no idea on tuning everyone else I know that has done this has gone with a aftermarket ecu (magesquirt v3) or has gone carbbed. For the time being will install it as stock as possible, but a combo of not really wanting to run 4 O2 sensors (since I don't have a cat set up) and my greed for speed I wanna look into tuning the stock ECU. ![]() I am sorry if this is in the wrong spot but I just bought a LS 5.3 swap (all wiring an ecu out of the donor truck) from a salvage yard for my 87 El Camino. ![]()
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