MSQ repository. Critique.

[740ATL]

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[JohnMc]

Just looking at the VE table, I'd suggest doubling those values and halving the req fuel. The way MS calcs the injector timings doing that would give you better resolution.

[The Aspirator]

I'll contribute too.

Lets see here, I've got an '83 242 that has a B23 with F pistons so the compression is 9.5:1, toight squish.
Ported 398 head, custom intake manifold, ported 90+ exhaust mani
M46 with 3.91 rear end (welded hehehe)
3" exhaust
Powerstroke intercooler
T3/T4 turbo, something like 44ar .50trim coldside, .63trim hotside
A-cam advanced 6*
46lb CFI injectors at 3bar
MS1 extra 029y3, V2.2 board modified for sequential coil-on-plug
4 chevy LS1 coils and custom wires (multicolored = moar hp)
MS boost control (works awesome)
2 wire idle valve (still gotta tune this better)

Right now the car is pretty well sorted, it's smooth through the entire powerband and the AFR's stay right where they should. I'm sure it's making 220-250whp. If anything I need to tune the idle bins better, and that's the easiest to do! I haven't had this turbo above 200kpa yet, I'm scared for my M46, so ignore those bins. I usually get 20mpg beating on it all the time, 22-24 if I'm a nice boy around town, and 25-30 if it's all freeway for a full tank. I haven't done any datalog tuning for a long time, that's something I've wanted to do for a while now. I have a feeling that my rev limiter is kicking in sooner than 6500, or maybe the engine just wants to rev higher ;-).

These maps haven't been dyno tuned, but I did have this engine on a dyno over a year ago and it made 235/250, I still have those maps if anyone is interested. The following maps could probably use some more aggressive ignition advance in boost, because it's quite conservative. Although I've noticed that this engine seems to ping at much lower advance numbers than stock engines, hence the low numbers. But Mike your numbers are pretty low too.

Hope this helps someone else get started! Feel free to ask questions. Actually this gave me an idea, I need to have an MS section on my website, chronicling what I've done.

http://www.cravingboost.com/cars/megasquirt13.jpg
http://www.cravingboost.com/cars/megasquirt14.jpg

[Karl Buchka]

John, it seems you missed posting the actual MSQ. ;-)

My setup is mostly stock, but there aren't really any other setups like this around, so I figure I'll post it.

1979 242DL
Longblock is a bone stock B5234T from a 1994 850 Turbo
2002 S60 T5 (ME7) intake manifold and 850 throttle body
Stock IC
Conical housing 15G with a mildly ported hotside
3" downpipe to 2.5" single muffler exhaust
'White' S70T5M injectors (350cc @ 3bar)
960 ignition coils, 960 power stages
MSnS-E, V3.0 PCB, 029y4 firmware
Five ignition outputs, VR primary trigger, Hall secondary, launch control, fan control, tacho out
Stock crank trigger, slightly modified cam trigger
JAW EGO controller
T5-WC tranny, sprung hub 6-puck clutch disc
3.54 gears (I think)

The fuel map pretty damn close up to 220kpa and 6600rpm. Lambda at idle is dead on 1.0, by full boost and redline (6500rpm) it's right around 0.82. The spark map is conservative at best. The car pulls cleanly and doesn't ping, but it could probably do with some more spark advance. All tuning has been done on the street with 93 octane E10.

Warmup and (TPSdot) accel are also pretty well dialed in. Car has had no issues starting and acts properly on throttle application. There's no idle motor. Cold idle is ~900rpm, hot idle is ~1400rpm.

I have no idea what kind of gas mileage I get. I don't have a fuel level indicator, a speedo, or an odometer. It certainly doesn't inhale gas, but it's no Prius either.

Probably forgetting something. Comments, questions, etc are welcome.

Karl

http://forums.turbobricks.com/attachment.php?attachmentid=5160&stc=1&d=1219432697

http://forums.turbobricks.com/attachment.php?attachmentid=5161&stc=1&d=1219432737

[the poi]

This is a horrible MSQ repository thread, there's barely any MSQs in here!



OH GOD, I'M PART OF THE PROBLEM:run:


(I'll post mine tomorrow after I finish tuning PID idle)

[Boris740]

http://www.cramptonstation.com/megasquirtandspark.htm

[The Aspirator]

John, it seems you missed posting the actual MSQ. ;-)Ack, I even had the file name copied and everything, just forgot.
http://www.cravingboost.com/cars/megasquirt-John-highres-cop-07-18-08.zip

[qwkswede]

Engine info.
2.6 Liter B23 short block.
9:1 compression Ratio
16V Penta Head
U Intake cam, PZ exhaust Cam.
1000CC injectors (Low Z with resistors)
Garrett GT30R turbo (3076R)
Wasted spark ignition, ford 4 post coil pack.


--Megasquirt info:
V2.2 board
MSI - Extra with the 029hr10d high res code.
Using the wheel decoder on a 36-1 trigger wheel.
Hall sensor Input from the crank trigger.
Idle Control with an LH2.2 idle valve.
E-fan control
Shift Light outputs

These maps are my current gasoline maps. I run on E85 about 1/2 the time lately. My car has pulled down 22mpg on these maps. I run around at 200kpa or less. The cells above that are not tuned. The car makes somewhere around 300-350rwhp on this tune.

5222
5223

[740ATL]

One more thing I was thinking guys... perhaps in addition to the msq, we could import the VE/Spark tables as vexes... obviously converting the *.vex file to a ZIP first so it can be posted....

That way if you don't have MSII, or High res, you can load the maps by simply importing them into your msq.

just a suggestion.

BTW... I like where this is going... thanx for the participation guys! :)

Mike

[the poi]

Hokey, here's mine. 2.8 b6284t, holset hx35w, toob exhaust manifold. These maps are for the 63lb injectors at 3.5bar, so effectively 67lb. My maps for my 46lb CFIs were pretty good, and these are a re-tune of those for the new injectors. I really haven't done much tuning on it, because I'm planning on just doing everything all at once correctly once I get the manual trans in the car. They're pretty good right now, except accel is "messed up". This is because EGO correction goes to 0% when you enter accel enrich, but my current setup needs to correct idle up to about 20%, so it always stumbles when I hit the gas. The correction is apparently necessary because the injector opening time is about 80% of my command pulsewidths, and either temperature or something else I can't think of is really messing with the calculations. But whatever, hopefully I can fix it without having to go to staged injection.

http://www.pbase.com/765ti/image/102886744/original.jpg

http://www.pbase.com/765ti/image/102886746/original.jpg

edit://VEX in the zip!

[The Aspirator]

Holy cow, ms2 has a 16x16 fuel table!? That thing is huge, must be a pain to tune.

[Karl Buchka]

Holy cow, ms2 has a 16x16 fuel table!? That thing is huge, must be AWESOME

Exactly.

[JohnMc]

But MS interpolates between the cells, instead of just picking the closest one. So the extra cells aren't as useful as you might think. On some other systems that merely pick a cell, you really do need as many cells as possible. In MS, you just need lines in the graph where the curve is actually changing, not the VE values.

[RvolvoR]

suppository?

[the poi]

Holy cow, ms2 has a 16x16 fuel table!? That thing is huge, must be a pain to tune.

I have 5 columns to tune my idle!

[Karl Buchka]

I have 5 columns to tune my idle!

You should reduce your req_fuel and increase your VE values. More precision and that you know.

[500dollar744ti]

http://www.pbase.com/765ti/image/102886746/original.jpg

edit://VEX in the zip!

oh jeez, you really had to use partial degree advance numbers. silly engineers. :-P

[the poi]

oh jeez, you really had to use partial degree advance numbers. silly engineers. :-P

The spark map generator I used did that, i swear! When I tune it properly on a dyno I'll use whole numbers.

[500dollar744ti]

when i get a chance to copy the maps from my laptop i'll post them... currently i have the most killer, smooth, torque rendering tune on my b230ft, it is soo perfect right now that i salute myself. however my v8 turbo is another story. :lol:

[JohnMc]

OK, here's the latest on my car, post dragstrip detune (don't need to be running 25 - 27 psi on my daily commute! Also, no need to run it piggy rich either.

93 B230FT
531 head with 38mm exhausts, Cometic MLS HG
Browntops (maxed out, I'm gong to put on some 46# CFI's soon, soon)
16T (also about maxed out, EBC duty cycles at the track were aroun 98, 99%, so it was pretty much no wastegate action)
3" exhaust
Large NPR
IPD turbo cam, adjustable timing gear set slightly advanced
MSNS-E - hr_10g, wheel decoder running bosch module running MSD 6A running a Blaster 2 coil, IPD wires
BPR8ES plugs set at .027
EBC (GM Typhoon solenoid)
Oh yeah, and the idle is currently farked. I really think it was some bug that came up during a firmware update. I used to have it working very well, but I think it was after a firmware update that it started doing a weird thing where it reverts to some weird idle DC when it should just be bumping it up 1. The weird value seems to be some sort of high water mark for idle DC for the whole time its been running, a quick off/on with the ignition key resets the cycle until it slowly develops again. The A/C exaggerates the issue by making higher DC cycles which jump start the whole weird situation.

[qwkswede]

Hey Chris. Any idea what kind of power you are making on that setup yet? I'm considering a whiteblock of some sort for an upcoming project. Just curious what the precedence is for 500hp 6 cylinder Volvos.

Hokey, here's mine. 2.8 b6284t, holset hx35w, toob exhaust manifold. These maps are for the 63lb injectors at 3.5bar, so effectively 67lb. My maps for my 46lb CFIs were pretty good, and these are a re-tune of those for the new injectors.

[The Aspirator]

Holy cow John, the browntops must be absolutely pegged. I'm pushing the CFI's with over 90%. And lol at the 99% boost duty, don't think I've had mine above 50-60. Whaddya run at the track?

[qwkswede]

Yeah, whats it run? I should post up an e85 map too. I have seen 90% duty cycle on my e85 tune and 1000cc injectors. I may have to step up to 1600s if I ever want to run over 20psi. its pretty interesting. Too bad the clutch can't take it.

[JohnMc]

Holy cow John, the browntops must be absolutely pegged. I'm pushing the CFI's with over 90%. And lol at the 99% boost duty, don't think I've had mine above 50-60. Whaddya run at the track?

13.8@100 was the best a week or so ago. And apprently I ran it a little too hard, because it threw a rod this morning under some modest boost (15 psi?).

The wideband never showed it going lean, even neasr the end of a long 3rd gear pulls at WOT and 24 psi.

[The Aspirator]

:-( Suuuuuuuuuck. Sweet time though. By the way I saw you were mentioned in Rolling while I was reading it the other day!