Want to bypass computer completely

Hi.
I have a friend who isn't too mechanically inclined that let someone work on their 2004 Tundra SR5 and the person completely screwed up/removed most all of the relays that make the darned thing run.
Because of this diagnosis is practically impossible as is finding and replacing every relay in the truck
I was wondering if it wouldn't just be a whole lot easier to just get rid of the computer entirely, go to an aftermarket crank fired ignition of some kind and simply do away with the computer entirely.
We live in an emissions exempt county so inspection isn't an issue, but I'm sure she would still like to run as clean as possible.
I would greatly appreciate any help the members out here have to offer. I'll monitor this post regularly in case anyone has questions and thank you in advance to any and all who are willing to help.

 

This s/b really interesting.

So how will the engine's A/F mixture be determined? Or are you taking out the fuel injection and replacing with a carb?

How will the engine know when to fire each spark plug?

It might be easier to buy some vehicle pre-80s.....

 

"Pre 80's...?"
And so this is why I posted the thread. To see just what it would take to do something like this.
(Hadn't thought about fuel but was thinking some kind of MSD crank fired ignition system for the spark though.)

 

Paperweight now

 

You'd be better off finding a running parts truck and swapping everything over.

The electrical system is tied into the entire truck. It runs the dash, controls the accelerator/throttle body (no throttle cable on 04), controls the ignition, fuel pump, fuel injectors, 4wd (if it has it).

There's also no aftermarket parts to support what you're trying to do.
If you were hell bent on doing it a SBC swap would probably be the "easiest" way to do it.

 

sure you know - Before 'puters were put into autos.....

you're better off repairing it to the way it was intended to operate.

So are you still letting your ignorant friend mess with your cars?

 

It would be easier to convert it to hamster power.

 

Gonna need some very “inclined” but

http://megasquirt.info/

 

Okay, well I guess I got my answer.
The short answer is, no.
Thank you to all who submitted replies. I learned quite a bit.. And I appreciate the help.
I'll let my friend know to start looking for a parts truck and we'll go from there.

That is unless someone out here knows where we could get just the relays we need all at once without costing an arm and a leg? That would be awesome. Thank you

Oh. Johnsonman__ lol. It wasn't me. I drive an Acura. It was a girlfriend if mine who let this idiot work on her truck. Lol