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MegaSquirt Map Information Sharing (all code versions)

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It was a great Summer with megasquirt.  Did quite a few miles, a long road trip, a track day at Watkins Glen, and lots of car shows.  The car ran great all Summer long with almost no fiddling with the maps.  It even starts up great in all weather conditions. So I figured I would share my latest map which I named "GREAT".

 

MSII v2.687, stock L28et longblock, intercooled, T3/T4, LC1 WBO2, 440cc high imp injectors, dual pressure sensors, 4bar MAP sensor, no idle control, 18psi boost, EDIS6.

!!!!!!!!!GREAT!!!!!!!!.zip

Edited by cygnusx1

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Read through the three pages of discussion, still a little timid.

 

I'm trying to figure out the initial timing map to start off with since I'm not entirely sure about the L28's timing nuances.

 

Here's the build:

 

1976 N/A 2.8L

Cammed by previous owner, unknown specs - idles at ~64 kPa at the moment at 800-900 rpm

Stock injectors AFAIK (5 whitish topped, one green topped)

EDIS6 controlling 3 GM-DIS coils

Innovate LC1 WB02

6-2-1 header

55mm Altima throttle body

MS2extra (latest firmware) on a v3.0 board

 

The car seems to idle ~14.5 AFR at ~900 with a VE of only 21-22. Everyone else seems to have their VEs up into the 50s and 60s; so I'm worried somethings wrong.

 

As for the timing, someone posted this earlier; think this is a good place to start?

TurboTiming.jpg

 

Thank you.

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I thought of a better way to share my msq. Watch in full screen so you can pause and take the numbers down if you need them.

 

 

Megasquirt/Datsun - Fuel and Spark map Built in Megatune (www.diyautotune.com)

 

EMS: Megasquirt II

Firmware: 2.687

MAP: 4 bar sensor

Wideband: LC1 Innovate

Idle contoller: none

IAT: GM

Coolant Sensor: 280ZX Head Temp Sender

TPS: 240SX

Injectors: Ford Lightning 42# high impedance 440cc

Turbo: T3/TO4B hybrid

Intercooler: 18x3x11 Spearco

Engine: Datsun L28ET F54/P90 (stock long block)

Throttle Body: 240SX with spacer

Exhaust: 2.5" downpipe and back

BOV: Vented TurboXS

Ignition: Ford EDIS-6, 36-1 trigger wheel, dodge coil pack.

Car: 1976 280Z

Flywheel: Fidanza

Boost: 18psi

Knock Sensor: none

 

 

This map is NOT dyno tuned, but is street and track tested. Untested under severe loads past 5500 rpms.

Edited by cygnusx1

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Hello, Just for others. I just got mine running from these maps. But only the 2.8xxx code. My car would barely run on the 2.6 (too rich). Don't know why. Anyway, I hope to post my tune soon. I have a 74 260z l28et, .40 over je forged, 1mm metal gasket, p90, 450cc rx7, 40psi, 60-1 turbo, z31 direct coil, ebay intercooler, ms2 3.57, autometer wideband. Recently converted from nistune-It sucked!

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I rebuilt my motor, stock with a 0.020 over bore. I spent a lot of time re-tuning after the rebuild. This map is running well for me. There are a lot of changes since my last submission. I dialed in EGO Control by experimenting with transport delays, to dampen out the corrections, so they are stable. I also fixed up the cranking enrichments and the after starts. The AFR map has also been tweaked for better driveability. It's not focused on economy. I am leaving economy off the table for this car. I don't like the way it runs when I try to get econo lean AFR's.

 

EMS: Megasquirt II

Firmware: 2.687

MAP: 4 bar sensor

Wideband: LC1 Innovate about 3" past the turbo.

 

 

Idle contoller: none

IAT: GM

Coolant Sensor: 280ZX Head Temp Sender

TPS: 240SX

Injectors: Ford Lightning 42# high impedance 440cc

Turbo: T3/TO4B hybrid

Intercooler: 18x3x11 Spearco

Engine: Datsun L28ET F54/P90 (stock long block)

Throttle Body: 240SX with spacer

Exhaust: 2.5" downpipe and back

BOV: Vented TurboXS

Ignition: Ford EDIS-6, 36-1 trigger wheel, dodge coil pack.

Car: 1976 280Z

Flywheel: Fidanza

Boost: 14psi

Knock Sensor: none

CurrentTune.zip

Edited by cygnusx1

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Here's my fuel only tune for a N42/N42 build:

 

MS2E (2.1.0 code)

270/280/460 cam

10:1 compression

Nissan turbo injectors (~290cc)

MSD6A coil fired.

GM IAT and CLT

LC-1

 

http://www.mediafire.com/download.php?lk0lr4kg8oe2m83

 

Solid tune. Good enough that I'm no longer fiddling with it. Has not been dynoed.

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It was a great Summer with megasquirt. Did quite a few miles, a long road trip, a track day at Watkins Glen, and lots of car shows. The car ran great all Summer long with almost no fiddling with the maps. It even starts up great in all weather conditions. So I figured I would share my latest map which I named "GREAT".

 

MSII v2.687, stock L28et longblock, intercooled, T3/T4, LC1 WBO2, 440cc high imp injectors, dual pressure sensors, 4bar MAP sensor, no idle control, 18psi boost, EDIS6.

 

 

Just used your tables for my startup/break in and its pretty good. I havent flogged on her yet but Ill let you know. Its running on ms2extra latest code with an N42/N42 NA-T conversion using turbo pistons, a very shaved head of unknown static compression with 77 n/a cam, stock t3 custom emusa intercooler with 3 inch piping with an msa downpipe w/o exhaust and using srt8 14 mm high impedance injectors on a modified n42 intake.

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Is anyone else out there running MS2X 3.2.1 with the DIYAutotune 12-1 disk and have it running well? Mine runs pretty pretty good, but I can tell there is room to improve.

 

I'm interested in checking out your settings if you would mind posting it.

 

Thanks!!

my 280zxt PDF.pdf

Edited by macambra

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I am running a MS2-Extra (MS2357-C) Firmware 3.1.1. Is there anyone with a base .msq for a stock block and head l28et. I would like it to run pretty rich for now because I don't know exactly what mods the previous owner did. I am still researching the parts and items on the car. I just bought the car and the guy I bought it from did a hack job on the wiring so he couldn't get it back running. I plan on taking it to get it tuned and dyno'd once its up and running.

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My setup is basic. Has an intercooler, stock injectors (PWM), diy trigger wheel, and ford cops. Just some minor changes and should be good for you. Could probably use more timing in certain areas.

Edited by loy

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Thought I might as well put my map on here.

 

Specs on my setup are as follows:

 

MS3/MS3X

L28ET F54/P90 head

DIY CAS wheel

RB26 TPS

RB26 444cc injectors/ RB26 ballast resistors

Chrysler 420A air intake temp sensor

Zeitronix sourced MAP (50psi)

L28ET CHTS

Ford COP w/ RB25 igniter @2.0ms dwell

DIY boost soleniod tuned to 13psi @ 55% duty cycle

 

L28et_boost_12psi.zip

 

 

The fuel map still needs cleaned up, its getting about 10.5afr at 12psi and 5000rpm

 

Edited by winstonusmc

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Does anyone have a timing map to share that is proven for 300whp and at what psi? I'm running msII v3 on my l28et with a t3/t4. I'm still running the stock turbo cam as well. I'm currently at 260whp and 308tq at 15psi. I don't want to crank the boost to achieve the 300whp if possible because I want this thing to last a while.Thanks guys

Edited by Nelatl

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I am still tuning my MS3, but my highest timing is approximately 38-40 degrees from 3000 rpm up, and I set my initial timing to 18.  At the moment I have considerable retard built into the higher manifold pressures, so my timing is currently set to 29 degrees at maximum boost midrange rpm, and drop to only about 15-17 degrees at maximum boost up to 6000+ rpm.

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Can someone post a basic N/A set-up?

 

my specs:

L28 (3.0 stroker, mild performance build)

Fuel ONLY

Stock ignition

Stock injectors/manifold

MS2 with 2.60000 firmware

 

I just need to compare the base settings and VE table to make sure I don't have something out in left field. I know I'll have to get it dialed in afterwards.

 

thanks :-)

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Not sure if I should put this in this thread or not but can anyone take a look at my datalog and tune give me some advice one getting my l28et running better. The motor is pretty much stock and I am using a MS2 3.57 with the newest firmware and a DIY trigger wheel.

 

You should start a new thread in the MS forum. For one thing, most of us run much higher timing you do. I'm running 41° at cruise and 25° at 180 KpA.

 

You can also lean out your cruising AFRs to something closer to 14:7.

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