Hey guys im new here. And desperately need help 1992 camaro rs with an 87-95 tbi truck replacement engine
headers, 3 inch exhaust. Im going to be removing the ecm. Havent decided if i will remove completely or move wiring off to the side. Im installing fitech efi easy street 600hp system along with a dual plane weiand intake and hei dist 3 or 4 questions
can i wire the fuel pump power wire from the new system directly to the stock relays wiring?
Can i also do this with the fan relay? The system controls fuel pump and will send the proper voltage to prime and turn on the pump but will this work since i am removing the stock wiring to everything but the required things to basically run a carb and those relays? World class T5 transmission. So no issues there. And can anyone help me figure out exactly what wiring i need to remove and what can all be kept please. Any help is appreciated i cant really find much and im losing it! Haha. Thanks guys!

 

Can you post a pinout sheet for the FItech wiring ?

I'd probably splice the FItech into the factory harness as needed. The polarity of the fuel pump circuit may require an additional relay, some aftermarket ECU's short a ground for fuel pump control, whereas the GM wiring requires +12.

I guess, you could remove the factory engine harness completely, and just pass through the wires you need into the cabin (power, ground, tach, etc).

-- Joe

 

Now, if i remove the factory harness for the ecm will that leave the starter, dist, and other necessary wires to make the car actually start? Thanks again in advance

 

also running hei so no spark box

 

Understand, you probably won't gain much if any, running the FI Tech.. It will support 600HP, but you have pretty much a stock engine.

Is there anything wrong with the TBI you have now? (I may have missed it)

 

ecm fried itself, and it still needs 350 injectors and a tune
just figured if im throwing 500 into getting a new ecm, tune and injectors when im going to end up putting heads and a cam in it i might as well get a system i know how to tune myself for 700 instead of ordering a new tune anytime i do something to it and add the 4 barrel and benefits of the efi system itself.

 

PLEASE stop making new threads asking the SAME question. If you have Alzheimer's disease and can't remember that you posted the SAME QUESTION, please write down what you did so you can remember an hour later.

You have posted the same question 10 TIMES.

STOP IT.

If you don't know what you are doing with a diagram and wire cutters then leave the job to someone that does. Everyone has THE SAME answer for you. Get a diagram and F*cking READ it.

GD

 

https://www.ebay.com/itm/Engine-ECM-...4AAOSwDuld8Q7m


https://www.ebay.com/itm/Standard-TJ...i:183489015138


and a tune for $75 , cheap way to go

 

no sh++ about the wiring diagrams. Thats not my auestion. Dont look at the thread if it bothers you so much no need to be a huge douche cause someone cant tell me if i pull the whole ECM harness. will the alternator and starter connections be left out of the c100. THATS THE SAME QUESTION IVE BEEN ASKING ITS SIMPLE AS YES THOSE WIRES ARE RAN FROM THE ECM ITSELF OR NO DUDE. NO NEED TO BE RUDE. CAUSE EITHER WAY I STILL HAVENT GOTTEN A STRAIGHT OUT ANSWER. i dont need anything from the ecm besides those wires. Why would i diagram. It if its as simple as pulling the ecm harness if someone could tell me. Im not wasting 12 hours combing over wires if i can literally just pull the ecm and be left with what i need. And if people like you didnt act like clowns about it. Its a simple yes or no answer.

 

Thanks for the links and advice ill definitely check into it if its gonna be significantly less cost wise

 

Think you missed the point. You only have to post ONE thread and wait for a response. Even better you can use the search function to look up this info. You're not the first to ask this and the answer to what you seek is within this forum. You just have to be patient and wait for someone who knows to respond, or make the effort to actually search it out yourself. You made 85 different threads asking the same thing, even made multiple threads in the same sub-forum like some half-a$$ed spammer. You came off like a little kid asking the same thing over and over. Don't get mad because you got called out on it. Patience friend, no one is trying to ignore you but those who can answer you directly might not visit the site every five minutes. Good luck with your project I hope you get it sorted and running.

 

It's not one thread, it's TEN threads. All asking the same dumb question. You are spamming the forum and it's annoying and it's just dumping useless threads into a database where it will be that much harder to use the search feature to find anything useful.

There is no "yes" or "no" to your question. If you haven't already noticed - no one is answering you because despite you DESPERATELY wanting it to be, this is not a yes or no answerable question. YOU CANNOT DO THIS without consulting the diagrams. You really think that a computer controlled engine is going to be "just fine" if you go hog wild and just start disconnecting things? NO - things will not function. Some will, and some wont. You need to read and understand the diagrams. If you aren't willing to do this, then NO AMOUNT of pleading with the forum here is going to make that car run. PERIOD.

Trust me - don't anger the Third Gen gods. It won't end well.

And Tuned Performance is absolutely correct. For the pitiful 160 HP you are going to have at the wheels with that garbage TBI truck power plant, you may as well get a $50 used ECU and a tune to run it. It will run just fine with the 305 TBI unit with a proper tune. Assuming it is mechanically sound and you have setup the TBI correctly.

GD

 

[QUOTE=GeneralDisorder;6371611]
i dont think you understand what im trying to say here though. im replacing the computer completely with a new one with an independent harness that controls the engine completely. I just needed to know if the starter wiring and alternator ran to the ecm. I found the alternator wiring. I still cant trace back the starter wiring. I just needed to know if unplugging the original computer will disconnect power to the starter and if ill need to wire that back my self. Ive done thus job on my 68 chevelle. It had no computer harness to remove. So everything was already connected that i needed.
im not trying to clog the forum i just needed a little guidance. Does anyone know if ill have to rewire the starter? The car was my dads. He passed last year but he knew everything about these cars. So i used to call him anytime i needed to know information like that so i apologize guys. Just a little lost here. I wont post anymore im sorry if theres anyway to remove the threads ill make sure i do. Thanks

 

also its a perfomance 310 hp crate engine before i did anything to it, now with headers, dual exhaust. Minor cam (came in it. Not sure specs) and a weiand street warrior dual plane

 

If your only question is the starter at this point - why not just disconnect the computer and find out if it still works? Disco computer.... turn key. Why wait around for hours for someone to reply here when you can find out for yourself? No engine? No problem just hookup the starter and ground the starter body through the frame.... or just check for voltage with a meter on the solenoid wire..... lots of quick tests you can do to move on without waiting for us.

Crate motor.... ok so 200 HP at the wheels. LOL. Still don't need FiTech. The stock TBI will do just fine.

GD

 

He's a new user so his posts were moderated. He may not have realized they were active. I've deleted the duplicates.

With that said, the Fitech ECU is a lot easier to tune than the 20-30 year old TBI ECM, and the throttle body is nice too.

-- Joe

 

No, that's all part of the 'engine harness' unfortunately. I think you're best bet is to splice things together.

You can dissect your engine harness, and remove everything you don't need for the FItech install. The FiTech really only needs power and ground from the OE harness, and splice the fuel pump, fans, etc.

-- Joe

 

thanl you i really appreciate it and thats exactly what happened. Im wiring everything together now