C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

tuning on a single plane efi

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Old Mar 15, 2013 | 01:30 PM
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Default tuning on a single plane efi

So I am building my engine now. And I was planning on big sbc but I cant seem to find any quality 400s in the area so im just gonna do a 383. (I know saying just sounds dumb lol).

I still plan on efi single plane with an elbow and 90mm tb.

Only problem is what do I have to go about to tune the 85 computer. I plan on big cam as well. Is there a certain tuner anyone would recommend for the 85 or idk. Im really wanting to stay fuel injected.

(Im still just piecing everything together so I can build it at once)
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Old Mar 15, 2013 | 01:46 PM
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If you are going that radical, I don't think you will be happy unless you have full control of your system using a Fast, Accel or other engine management system.
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Old Mar 15, 2013 | 03:06 PM
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Originally Posted by 383vett
If you are going that radical, I don't think you will be happy unless you have full control of your system using a Fast, Accel or other engine management system.


Last edited by tunedport85inject; Mar 15, 2013 at 03:13 PM.
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Old Mar 15, 2013 | 03:48 PM
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Be aware that EZ does not control spark. you would need a diff distributor or run spark off stock ECU and fuel only off EZ.

dynamicefi... check it out.... uses your stock ECU with a port fuel mod
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Old Mar 15, 2013 | 03:50 PM
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You can tune the 1985 computer or switch to a 1986 computer and get it working well. Either one will work but you will have more support and data logging ability with the 1986 computer. A 1986 computer with a Blower Works (3" 3-1/2, or 4") MAF allows you the ability measure air flow past 1000 grams per second so you can tune almost any combination.

I have tuned a wild 434 running a 4" maf from blowerworks and it drives very well.

Last edited by bjankuski; Mar 15, 2013 at 04:45 PM.
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Old Mar 15, 2013 | 04:41 PM
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From: Glenbeulah Wi
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Originally Posted by Rohn
Be aware that EZ does not control spark. you would need a diff distributor or run spark off stock ECU and fuel only off EZ.

dynamicefi... check it out.... uses your stock ECU with a port fuel mod
EZ EFI leaves a lot to be desired, no spark control and very basic fuel control, adjusting cold start and accelerator enrichment is very crude. It works for mild tunes but I believe it is too basic for wild tunes.
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Old Mar 15, 2013 | 05:56 PM
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the reason why i added the holley dominator vid...
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