- Oct 1, 2015
- Reaction score
- Westchester NY
To the relief of at least one of you out there.....
I’m thinking that I may just retire the Electronic Lean Burn system.
Yep... take it all off carefully, put it and all my spares in a box and send it to the back of the back of the garage. Oh I’ll keep it and it goes with the car but that 43 year ignition control system is just not up to giving me the power possible from the rebuilt to ‘69 spec 440. And there is no easy way to tune it so that it can.... period.
I do get glimpses and it’s kind of cool. Like when I slowed down to take a fast turn and hit the gas and she burned a little rubber (on one side). But then the computer retards the advance and won’t bring it back up fast enough (by design) to put out the power this thing is capable of. It’s really not the system; it’s the built in hard wired programming that it came with. The technology was pretty bleeding edge and precursor to actual fuel and ignition control that would come soon enough. In order to eliminate pinging at highway i have to have the timing set just right. Everything needs to be just so.... and I really do love the kickdown and throaty sound of that Thermoquad when I nail it... it’s just that I never know exactly what I’m going to get. It does take very little pedal to get and hold speed now. If I drive like an older sane person then I would never be able to tell. But that’s not me.
Options I’m Currently exploring:
Option 1) Remove the ELB ignition sustm and replace it with the older electronic ignition system and dizzy that comes in a kit for about $200.
Advantages: easy and fairly cheap to do. Stripping the sensors and ELB add-ons to the Thermoquad will not affect its performance (or glorious sound). Could probably do it in a day or two. I know the system backwards forward and upside down, have the actual diagnostic equipment for service (just because I’m really insane). It is in line with the rest of the Mopar fleet (or flotilla according to my bride). I could adapt the ignition module into the current computer control box to keep at least the aesthetic.
Disadvantages: it’s not very fuel efficient. It’s a step back. It doesn’t take any advantage of the good things the ELB could do.
Option 2) Pull the ELB and Thermoquad (much to Stan’s final relief) and install a Holley Sniper EFI system.
View attachment 455141
Advantages: beyond the obvious... extremely high cool factor, drivability, performance, reliability, comfort, predictability. Takes advantage of the current ELB distributor.... which satisfies the nostalgic in me. (really uses what Chrysler was trying to do to its full advantage with both fuel and timing control) It’s evolutionary not radically different. I can do it fairly easily at the shop over a few days. I’ve rebuilt fuel
Injection systems in my Cadillacs so it doesn’t intimidate me at all. It come with pre set profiles you can actually tune.... meaning hours of fun and digital readout to play with. It’s a throttle body system so it will make some cool sounds, just a little different. And..... will look like a Thermoquad which satisfies the aesthetic requirements I live by. May be a sign if things to come for the fleet as parts get more rare and harder to find.
Disadvantages: mo money (about $1500 all in I figure), mo time to do which will require planning and logistics (and you all know how much I hate to do that) will lock me into the beast a while longer than I had planned.
thoughts, ideas.... gentlemen?
all are welcome on this discussion.
Of course either will require it’s own thread once I make a decision.