The 15 Y/O Turbo M42 Build Thread (Now Holley EFI Terminator X Controlled)

[Dj Buttchug]

I am going to start a new project and start from scratch with the "correct" trigger/timing settings and go from there. We'll see how it goes. Won't be a for a few days though as it takes forever to build the tune up from scratch using the megamanual as a you go.

LOL wish I was smarter.

We are in this together. Im going to have to do the exact same thing it looks like. I cant believe my car made almost 270 whp like this

Once I get my car idling ill send you my bases

[wazzu70]

Well, I would see what some MS experts have to say as to why your car can run decently well being so far off. Your fuel seems really really high to me which leads me to believe its compensating for being injected at the wrong time in the cycle. Your car will run with really retarded ignition, it just will be lethargic.

I will try and look through both your tunes and send you something that you can test out.

I have the front of my engine torn down now for repair, so ill snap a picture of the toothed wheel set at TDC so people can see I'm not talking crazy :)


The M42 gets very little love, so it would be nice to get a solid MS config for people to work up from. Also, my project moves slow, so I can keep busy by getting others sorted out :)

Maybe one of you can start a thread on the MS forum to get some assistance.

[Dj Buttchug]

I need to know what the stock ignition timing for this engine is. Ive looked all over and all I can find is 8 degrees advance. If this is correct we can use that as a start for settings.

In other news I marked my teeth up so I can see whats going on while cranking. I might have to plug in my stock ecu, then crank. Who knows. #1 on my list right now is to get the timing dead on.

[wazzu70]

You mean timing advance during cranking?

I have mine set to 10deg which is a fairly standard setting.

[Dj Buttchug]

yes, I would assume it wouldnt be more than 10 degrees thats why I kind of believe 8.

If one tooth is 6 degrees (like we established earlier) I should be able to figure out the settings pretty quickly.

RIP to my super OG snapon timing light. It got run over about a year ago. Sure wish I had it now. I went down and picked up a budget one for 30 bucks at HB. It has good reviews. hopefully it works

[wazzu70]

My timing light is a non-adjustable cheapy. Im sure whatever you got will be just fine!

[Schnitzer318is]

Wish I wasn't remodeling my house... :(

Have no time for car... maybe when the wife goes back to work next week. She's on mandatory vacation (one week must be taken yearly) and I don't have time for any auto projects with the list of honey-do's she's throwing at me. LOL

[Dj Buttchug]

Wish I wasn't remodeling my house... :(

Have no time for car... maybe when the wife goes back to work next week. She's on mandatory vacation (one week must be taken yearly) and I don't have time for any auto projects with the list of honey-do's she's throwing at me. LOL

hah! she must understand all things turbo related must come as first priority!

[wazzu70]

My wife not even let me have tarbo

So, I have some good news about trigger settings. I still don't get the MS trigger settings, but you guys had it right. The trigger angle is supposed to stay at 60 and has nothing to do with where tooth #1 is in relation to TDC.

You use this spreadsheet to enter the information in the wheel decoder:

http://www.msextra.com/doc/ms1extra/MS_Extra_Software_Manual_files/wheeldecoder.xls

Look in the manual here under wheel decoder:

http://www.msextra.com/doc/ms1extra/MS_Extra_Software_Manual.htm

Learn something new every day. The documentation in the program could certainly be more clear....but whatever.

Sorry for the confusion :loco: Since I led you on a goose chase, I translated some of my tables into things that may be useful for you to try in relation to cranking

Crank settings for a 3.2ms req_fuel:


Afterstart Enrichment:


AFR Targets:


Timing:


Start with the cranking and afterstart settings and see how that works. If it starts better, then update the AFR table. Use the VE analyser tool to autotune your VE table.

If you want to try the timing map, I'd pull a few degrees out of it across the board (take 3 deg or so out) and try that out slowly upping it a degree at a time.

[Schnitzer318is]

I'll have to go over those settings... I know the spark settings are right but not sure about the decoder ones. Their example is one tooth off mine for a couple of the settings.

EDIT: That AFR table is going to be a little rich during cruising won't it? I have my table set so that in cruising the EGO correction is trying to keep it at around 16.

[wazzu70]

You could choose to lean it out a bit at cruise for slightly better fuel economy if you want. Its not necessary though.

It never hurts to double check the trigger settings with a timing light. At least you know you are not way off though now!

[Dj Buttchug]

wow. Nick you are a boss. way to dig deep for us. Theres a few things im going to try as well. Ill report back and post up whats working. Im out of town over the weekend so it may not be till monday.

Nick and Joseph, thank you for all the help!

[wazzu70]

No problem, just trying to learn MS software and help you guys out!

I think the cranking and afterstart will make the most difference. Hopefully you can get quick easy starts.

[Dj Buttchug]

So went back to the 60-2 settings. Something weird to note. My car will start if bump start it every time regardless of engine temp. It can be dead cold and a bump start fires it right up.

Any thoughts brahs?

[LJ851]

Usually a hard start while cranking is from voltage drop, either a weak battery or a starter circuit that is drawing a lot.