As a lot of people know, I'm finally taking the plunge into an engine swap on my baby - 1988 Fiero BASE COUPE (NO OPTIONS)

I scored an already built 3.4L with fiero top end from another Fox Valley Club Member

second, as of this morning I am going to be the proud owner of Fierioguru's Brand New FWD Getrag set up he sold a while back to another Pennocks Member.

I'm buying new cables from Rodney Dickman

etc etc etc.

I NEED HELP WITH THE COMPUTER!!!!!!!

what year Fiero V6 Computer will work best with the 3.4L Camaro/Firebird swap?

I have no use for a knock sensor as I wont be putting a supercharger or turbo on (I think...lol)
as for tuning, I do want to be able to have someone tune it for me (adjust fuel trim, etc...though I have no clue about tuning)

Let me know ASAP as my swap begins after this next weekend.

thanks in advance!!!

Steve

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F.I.E.R.O. - Fantastically Imaginative Engineering Racing Object

I'm here to Help, just ask

www.fquick.com/GTXBULLET
Certified Tech/Mechanic (Restorations, Modifications, and Maintenence)
1967 Volkswagon Fastback Type 3 Fully Restored Rust Free California Car
1988 FIERO Coupe "IRON DUKE" 5-Speed (the show car ;-) )

Any year Fiero V6 ECM will support a 3.4L P/R engine quite well. A bit of chip tuning may be required to optimize fueling but that's the only thing needed. Some installations even get by with the stock program.

quote Originally posted by Dennis LaGrua: Any year Fiero V6 ECM will support a 3.4L P/R engine quite well. A bit of chip tuning may be required to optimize fueling but that's the only thing needed. Some installations even get by with the stock program.

but I thought there were slight differences between the years...like 1985 versus 1988...etc.

85 computers have the ability to use a knock sensor if it is programmed in. So I would get an 85 ECM just for that reason in case you want to use it in the future

The only hard and fast rule is that an 85 computer must use an 85 chip.
An 86-88 computer must use an 86-88 chip. (The 86-88 V6 computers are all the same part number. Chips are interchangeable across the three years.)

What's been done to the engine?
For a basically stock 3.4 with the Fiero intake system, I would probably run the stock injectors, but run an adjustable fuel pressure regulator, with the pressure bumped up a little. The other (more expensive) alternative is to run 17lb pintle type injectors. Accel injectors are pintle type.
With this setup, the stock chip should be close enough.
The stock 3.4 Camaro injectors are disk type. They may run okay, or they may cause a hunting idle.

If it's built up, you can run 19# Ford Mustang injectors (also pintle type.)
They will still require a bit of chip tuning, since even with a built up 3.4, they still supply a bit too much fuel.

You're going to like the later Getrag. I have the same tranny in my 4.9 car.

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Raydar
88 Formula IMSA Fastback. 4.9, NVG T550

Praise the Lowered!

quote Originally posted by Raydar: The only hard and fast rule is that an 85 computer must use an 85 chip. An 86-88 computer must use an 86-88 chip. (The 86-88 V6 computers are all the same part number. Chips are interchangeable across the three years.) What's been done to the engine? For a basically stock 3.4 with the Fiero intake system, I would probably run the stock injectors, but run an adjustable fuel pressure regulator, with the pressure bumped up a little. The other (more expensive) alternative is to run 17lb pintle type injectors. Accel injectors are pintle type. With this setup, the stock chip should be close enough. The stock 3.4 Camaro injectors are disk type. They may run okay, or they may cause a hunting idle. If it's built up, you can run 19# Ford Mustang injectors (also pintle type.) They will still require a bit of chip tuning, since even with a built up 3.4, they still supply a bit too much fuel. You're going to like the later Getrag. I have the same tranny in my 4.9 car.

I'm going to be using the Camaro Injectors. the engine runs nice and smooth without issues. if it doesn't have an adjustable regulator on it I'll put one on.
where's the best place to buy? and what setting should I run the regulator at?
Thanks!!

I have a 3.4 swap in my car, which I am turboing slowly.

My advice is to get a 1227730 when you do the swap. You can run the original code, then if you choose to go turbo you can implement turbo grand prix, or $59, which is what I run. It's an improved version of $58 which is the Xtreme/Syclone turbo 4.3 code.

I have an adjustable regulator and it's not the solution in my opinion. It makes my engine run either too rich down low or too lean up high. Tuning is the best way to go, even with this modest change.

The '7730 allows you to use a romulator easier (I use the moates ostrich 2). It has a faster data stream if you choose to tune off blm's instead of a wideband o2. It's way more supported than the old stuff, and has provision for a knock sensor. It's also way easier to come by if you blow one up somehow.


Chay

quote Originally posted by Raydar: The other (more expensive) alternative is to run 17lb pintle type injectors. Accel injectors are pintle type.

Where did you get this info? A few months ago I went searching for *new* (not remanufactured) injectors for my 2.8. I looked at the Accel injectors and all of the small volume injectors they make are disc type. Read the description here: http://store.prestoliteperf...com/17lb-single.html

Bosch makes both pintle and disc type injectors, but I have not located a 15# Bosch injector that is a pintle type.

Any Fiero V6 ECM will work. 85 must use the 85 chip, 86-88 must use a 86-88 chip. The 85 is a different ECM but has the same parameters, and the 85 code functions the same as the later years. the only real differance is the 88 chip, not ECM just the chip, has no rev limit, not necessarily a good thing. (can be changed in tuning)
But to start you may want to find a manual chip, as then your shift light will work. (can also be changed in tuning)
.
.
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Here is a question relating to injectors, what type are the 3800sc injectors? disk or pintle? anyone know.

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"DRIVE IT LIKE A FIERO"
'84 Fiero, engine to be determined
'87Blue GT 3.4L Swap Completed!!!!!!!! Boosted!!!!!!!
^^^^ Now in the Construction Zone^^^^
Las Vegas Fiero Club Parts/Sales/Service/Club
Fiero Road Club Of Northern Nevada

[This message has been edited by sardonyx247 (edited 11-07-2011).]

The stock 3.4 Camaro injectors are disk type. They may run okay, or they may cause a hunting idle.

Was wondering about this myself. I did the 3.4 swap built up, run 7730 but I have had a hunting idle ever since I but the truleo and 17# injectors in. Was wondering what about the disc type that would cause this, just maybe this is happening to me.

And sorry to butt in.

I know absolutely nothing about programming, and tunning.

I'm use to carbs and distributors. and doing it with a timing light/by ear.

I've owned 10 fieros now. rebuild some engines, torn 3 apart, swapped stuff over...but never anything in the computers...

I have a manual 85 computer on it's way along with the whole engine harness for trade for one of my auto ECM/PCM's and harness.

the camaro 3.4L injectors are what I'm going to use. I don't have an unlimited budget. nor do I want to spend a couple hundred dollars on injectors.

I know the engine runs great, has no hunting idle, and needs nothing as it sits right now.

the only modification I'll be doing most likely is the 1.6 Roller Rockers and NO AFTERMARKET Cam.

I NEED SIMPLE DISCRIPTIONS of tunning. like WHERE DO I GET IT DONE?

There are a couple of people here who will burn a chip for you if you ask. I'd start a new thread on that specifically.

If you don't want to put in the effort to tune your car, you will likely not get the 100% performance out of it. It IS an effort, and requires spending some money, and I understand if you don't want to go that route. I think the effort is justified if you plan to do 2 or more cars instead of just 1. I'm building 1 car and have 2 boats etc, etc so it was worth it to me.

Plus, what are the chances a 3.4T will end up being enough for me? Don't know yet...time will tell.

Chay

quote Originally posted by lateFormula: Where did you get this info? A few months ago I went searching for *new* (not remanufactured) injectors for my 2.8. I looked at the Accel injectors and all of the small volume injectors they make are disc type. Read the description here: http://store.prestoliteperf...com/17lb-single.html Bosch makes both pintle and disc type injectors, but I have not located a 15# Bosch injector that is a pintle type.

You're right. Looks like they changed them.
The pics that they used to show looked just like the Fiero injector, only they were mostly yellow in color. Had the "derby hat" pintle cap, etc.
Pintle type injectors may be getting difficult to find. They're 25 year old technology.
I found my 19# Bosch injectors at FiveO Motorsport. They were basically the stock replacement for a 98 4.0 Jeep six banger.
They might be able to source some 17s.
http://www.fiveomotorsport.com/

Others have suggested Fuel Injector Connection, but I believe that they have been less than honest with some of the folks in our club.
They have been selling V8 BMW injectors as 17 lb injectors. I did a web search for the part number, and the spec sheet stated 15#.
I scanned one of the cars that has those injectors installed, and BLMs were running ~140-150.
I'm going to scan the second car this weekend. We shall see.

UPDATE!!!

I just bought the correct 1988 Flywheel (SACHS)
and a set of Ceramic Coated Trueleo Headers and 2.5" y/downpipe

any thoughts on what clutch to get?
I don't want a hard clutch pedal. I was thinking a stage 1 clutch as it's plenty, good up to 220hp or so. and since I'll be running around 175-190 once it's exactly how I think it should be, then a stage 1 should work perfectly.

I've looked at F1, XTR, Centerforce, and a couple others. F1 seems like what I'm looking for for quality and performance. comments?

[This message has been edited by gtxbullet (edited 11-11-2011).]