Thanks for the reply.just what I needed to know. I do have the oe ecm but at this time I guess I'll rebuild the dizzy that's in it. The speeduino sounds interesting but maybe above my computer...

Good day all.maybe someone can answer this.I have a distributor from a 92 4.9L Deville engine.ordered parts to rebuild. Realized after that the star wheel for the pickup on this has a missing tooth...

14392
14391
143901438914388
This is 92 Cadillac 4.9 engine with a dodge 2 inch throttle body 700r4 behind it in a 3600lb s15.
7427 mpfi

Haven't been able to post much.finally got the time to fix exhaust manifold leak.it cracked beside my weld.been trying to get things right on this a while now.my break switch being loose was...

Ran into a few issues this past weak.heater hose leak.changed fluid and hose.next data log my blm at idle were 145.start driving it went right to 172 and stayed there.wouldn't stay in closed loop.o2...

13463
13464
13465
13466
Data log is about 35km drive some hiway some city and is a freshly modded bin.chip changed after warm up and battery disconnected. Check engine light came on after...

Well I've put about 1500kms and am just looking at some logs.I'm not getting tcc lockup.I get a true reading for tcc lock-adjust but false on tcc applied.I know it's not locking as it's easy to tell...

Loving the way this set up runs compared to the tbi set up.I'm using the torque converter from the 2.8L and not liking it that much.the stall is too hi so it feels like it's meant to rip the tires...

Well I won't get to drive this till tomorrow but I do have it running and going into closed loop and no codes so that's awesome. I don't know if the knock sensor failed or was the wrong one.the one I...

Thanks for that.I did reset 2 times and got the same code before setting the timing and the same code after and after clearing codes once timing bypass plugged back in.it seems the code comes only...

Got the usb to ttl functional.very cool.thanks for that tip. Got it idling.it ran Decent until I set the timing. It was at 30 and I put it to 10.plugged bypass back in and no change.like no advance.I...

That's the info I was after.thanks for your time.that will let me see what's up.the engine won't run with out pushing throttle so I'm suspecting iac not wires correctly.plus timing not set.hopefully...

13400this is the first cable I made for the 7747.I'm not getting a connection to 7427.do I need to have this 2 transistor set up13401any help is appreciated. Thx

Ok got my wiring figured out.had made a mistake on starter wires.had acc wire with crank wire on solenoid when it was supposed to be on the battery + lug.so at key on check engine light comes on then...

I decided id burn my chip again.see if any change. Still no check engine light at key on but it did fire up and run for about 20 seconds so I must have spark and fuel.guess ill look closer when done...

Finally got a bit of not so freezing on the fingers weather. I tried a start up today after lots of wiring and connecting everything and at key on I have no check engine light and do not hear fuel...

Harness repin complete. Had left over wires.a couple from last swap.C1 C2 from A.I.R.C9 crank signal.C12 ETM.B9 EVRV. Still have a bunch to do and just waiting on the weather. :happy:anyone know what...

Thank you Dave w. Once I get it fired up I'm sure I'll be asking more questions. The tbi was my first tuning experience over the last almost year logging and making changes. So this is a first time...

13345 this mod is the one I was asking about.pin 2 to pin 5 jumper.I was not questioning if the sense resister jumper was needed.just the memcal mod.I've done both.I'm supposed to repin my harness in...

Thanks Dave w.The sense resister jumpers and memcal mod are the 2 things I did do long ago.it's been sitting in a box waiting for this conversion. But since doing those 2 mods I read the memcal mod...

Dave w I forgot to ask this.is the memcal jumper required. It's done along with the sense resister jumpers but I've since read it's not necessary. Is this true.pcm is 7427 from a 95 c1500 with auto...

Thank you for your time.hopefully this all works.

Thanks Dave w.I do have the cadillac harness.I cut the injector harness wires today off the plug and separated the wires to the injectors to prepare for soldering onto the tbi harness wires.can you...

Good day.I'm in the middle if engine and transmission swap and also going from tbi to mpfi.can anyone give me some info on which way to wire injectors.I'm unsure if it's 4 on one side and 4 on the...

Hello again. Well I've run into a few mechanical issues in my new set up.the 4.9 had 5 broken exhaust manifold bolts in the heads.then 2 spark plugs twisted 9ff leaving the threaded part in the...