Tuning
Thread Starter
Heel & Toe
Joined: Aug 2022
Posts: 20
Likes: 7
From: Maryland
Tuning
Figured I’d make a post about this. I have an 85 corvette, and I’ve read and heard that the ECU’s in 85’s are either tricky to tune or just not worth tuning for a multitude of reasons. I imagine it’s possible to tune them, so I just figured I’d ask if it’s worth swapping a 86+ ecu in, getting a stand-alone like a megasquirt, or just keeping the 85 and getting a chip. Thoughts?
Pro
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
2022 C4 of the Year Winner - Modified
Finalist 2020 C4 of the Year - Modified
That depends. Why do you need it tuned, are you planning on doing extensive mods?
I have Holley EFI in my 85 but used it because I was turbocharging it. The Holley does what I need for managing boost much better than the stock EFI or an 86+ ECU would.
You can still find tuners that can burn you a new PROM but they are getting harder to find.
I have Holley EFI in my 85 but used it because I was turbocharging it. The Holley does what I need for managing boost much better than the stock EFI or an 86+ ECU would.
You can still find tuners that can burn you a new PROM but they are getting harder to find.
Thread Starter
Heel & Toe
Joined: Aug 2022
Posts: 20
Likes: 7
From: Maryland
I plan on doing enough that i’m going to need to be able to tune it reliably. At some point i’d like to turbocharge it but that’s way off in the future. Is the Holley EFI system worth the price?
Pro
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
2022 C4 of the Year Winner - Modified
Finalist 2020 C4 of the Year - Modified
Also: there isn't an off the shelf turbocharger system for our cars. You'll either have to go with a remote mounted turbo or fabricate/have fabricated a system of your own. (I built the twin turbo setup in my 85 myself.) There are centrifugal supercharger kits still available if you're planning on running boost.
