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

[trackjunkie21]

checkin that soon. gonna have a few fittings made hopefully by the end of next week

Sounds good, I'll definately be picking some up ;)

[SpoolnDaapex]

What spark plugs are you running?

[Dj Buttchug]

What spark plugs are you running?

1 step colder than stock ngk

[Dj Buttchug]

spent some time diagnosing. tps resistance is 1300 ohm @ WOT Spec says no more than 1200... may have an issue here. also, i think my timing is off.

[Danny]

What are you doing for tuning?

[Dj Buttchug]

electromotive stand alone. 85lb injectors

Im still on stock motronic right now tho.

[Danny]

Okay reading your thread, M50 injectors are 17lbs, not 19lbs that the m42 requires. You are DEFINITELY short on fuel on top of that you should be running at LEAST 24lb injectors, I'd say some 29/30lbs from a volvo would be better.
If you want to run on stock motronic for a while it will work, but not well. Get some 24lb injectors with an RRFPR and run low boost.
Also one of your coil packs could be bad.

[Dj Buttchug]

damn i thought m50s were 19... hmmm maybe i should put my stock injectors back in.

Im not worried about leaning out. Im running maybe 5psi if that. I want to get broken in at first but the car falls on its face after 2.5 3k rev.

checked the coils they are all good.

[Danny]

CPS then maybe. But yes you should be very worried about leaning out. M42s run their injectors on the peak of over working, you add even as little as 5 psi and you'll be lean. WAY LEAN.

Believe me, I've done all of this.

[Dj Buttchug]

yee ive seen your thread . Fuck. I have 940 turbo injectors. ill try them tomorrow.

what you mean peak of overworking? close to max duty cycle? rite?

[Danny]

Yes, I just couldn't find the right words to describe it.

Also, are you just running straight up Motronic with no FMU at all?

[Dj Buttchug]

Maybe thats my issue then. I swear its like theres no fuel as soon as WOT. fuel pressure is good to a 43psi

[Danny]

Also, are you just running straight up Motronic with no FMU at all?

[Dj Buttchug]

ive driven almost 100 miles just around town under nothing but vacuum with nothing but stock motronic... RISkaay i kno but im not buyin shit im just gonna throw away when standalone comes aside from a fully adjustable FPR which i have not purchased yet

[Danny]

Just get some fatty injectors and run hella rich then