88 computer swap questions


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Joined
Mar 10, 2026
Messages
11
Points
1
City
Chino Valley
State - Country
AZ - USA
Vehicle
Ford Ranger
Drive
4WD
Engine
2.9L
Transmission
Manual
Total Lift
Stock
Total Drop
Stock
Tire Size
235/75R15
Alright, I’ve got an 87 ranger xlt with the 2.9, 4x4, manual transmission, and an emissions delete. Egr has been removed and plugged, with all other vacuum holes sealed. But, as I’m sure you guys could have predicted, it runs like trash now. After doing some reading on here I started thinking about the 88 computer swap to fix the problem. But with that comes a load of questions.
1. Is it plug and play or do I have to bring any other parts from an 88 to the party?
2. How specific do I need to be with the part numbers? I know transmission and engine matters but beyond that, what else do I need to compare?
3. Will I need to do anything else to the engine/wiring or can I just slap the computer in there and start it up?
4. Who should I buy it from? Rock auto has stuff for $80 but people on eBay are selling for $150 plus.
5. If I’m going to buy this thing is there a better swap/out there or is this the best bang for my buck without changing little to any hardware?

I’m so ready for my truck to run well. I’m close, I can taste it.
 
Alright, I’ve got an 87 ranger xlt with the 2.9, 4x4, manual transmission, and an emissions delete. Egr has been removed and plugged, with all other vacuum holes sealed. But, as I’m sure you guys could have predicted, it runs like trash now. After doing some reading on here I started thinking about the 88 computer swap to fix the problem. But with that comes a load of questions.
1. Is it plug and play or do I have to bring any other parts from an 88 to the party?
2. How specific do I need to be with the part numbers? I know transmission and engine matters but beyond that, what else do I need to compare?
3. Will I need to do anything else to the engine/wiring or can I just slap the computer in there and start it up?
4. Who should I buy it from? Rock auto has stuff for $80 but people on eBay are selling for $150 plus.
5. If I’m going to buy this thing is there a better swap/out there or is this the best bang for my buck without changing little to any hardware?

I’m so ready for my truck to run well. I’m close, I can taste it.
Also, what is the difference between California Emmis and federal emmis? Would one be preferable over the other?
 

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