fire797 Posted January 14, 2016 Share Posted January 14, 2016 Has anyone tried using a stand alone EFI??? I have a 1989 Comanche and I have not hurt anything good about the Renix system. Looking to build a stroker motor and doing away with the Renix system..... Link to comment Share on other sites More sharing options...
cruiser54 Posted January 14, 2016 Share Posted January 14, 2016 You've been listening to the wrong people. Link to comment Share on other sites More sharing options...
shelbyluvv Posted January 14, 2016 Share Posted January 14, 2016 Howell makes a kit for the 258 using a GM TBI setup. It works really, really good too. Link to comment Share on other sites More sharing options...
johnj92131 Posted January 14, 2016 Share Posted January 14, 2016 Howell makes a kit for the 258 using a GM TBI setup. It works really, really good too. Yes, but it is NOT cheap. Link to comment Share on other sites More sharing options...
Marine1Texas Posted January 14, 2016 Share Posted January 14, 2016 Like above said, if you want to spend the money you can get much better then the Renix. Renix is very good, but just had design flaws that you have to make sure grounds are kep in check Link to comment Share on other sites More sharing options...
cruiser54 Posted January 14, 2016 Share Posted January 14, 2016 Install a stand alone system with poor grounds and you've gone nowhere, eh? Link to comment Share on other sites More sharing options...
Eagle Posted January 14, 2016 Share Posted January 14, 2016 Chrysler also used to (and maybe still does) sell through the Mopar Performance Catalog an MPFI conversion for the 258 engines. It was basically the Chrysler HO system used on the 1995 Wrangler 4.0L, packaged as a stand-alone conversion. Hesco also sold one -- which might have been the same system. None of them are inexpensive. Mopar: http://www.mopar.com/assets/pdf/performance/catalog/19561_JeepPerformanceCatalog_v02.pdf It'll lighten your wallet by about three grand. Link to comment Share on other sites More sharing options...
cruiser54 Posted January 14, 2016 Share Posted January 14, 2016 Chrysler also used to (and maybe still does) sell through the Mopar Performance Catalog an MPFI conversion for the 258 engines. It was basically the Chrysler HO system used on the 1995 Wrangler 4.0L, packaged as a stand-alone conversion. Hesco also sold one -- which might have been the same system. None of them are inexpensive. Mopar: http://www.mopar.com/assets/pdf/performance/catalog/19561_JeepPerformanceCatalog_v02.pdf It'll lighten your wallet by about three grand. I installed one of those on a Wrangler with a 258 about 12 years ago. The kit was almost $200 back then. Folks have strokers running with Renix systems on them. I don't see what the big deal is. Link to comment Share on other sites More sharing options...
johnj92131 Posted January 14, 2016 Share Posted January 14, 2016 Has anyone tried using a stand alone EFI??? I have a 1989 Comanche and I have not hurt anything good about the Renix system. Looking to build a stroker motor and doing away with the Renix system..... My very first question: Do you have a problem or issue with the Renix system on your 89 Comanche right now? Suspect you do not have a problem right now. Rather from your question, you fear running the Renix system on a stroker motor. My suggestion would be to do research at JeepStrokers.com and the old Yahoo jeepstrokers group. See if you can find any issues with strokers and the Renix system. Link to comment Share on other sites More sharing options...
cruiser54 Posted January 14, 2016 Share Posted January 14, 2016 Has anyone tried using a stand alone EFI??? I have a 1989 Comanche and I have not hurt anything good about the Renix system. Looking to build a stroker motor and doing away with the Renix system..... My very first question: Do you have a problem or issue with the Renix system on your 89 Comanche right now? Suspect you do not have a problem right now. Rather from your question, you fear running the Renix system on a stroker motor. My suggestion would be to do research at JeepStrokers.com and the old Yahoo jeepstrokers group. See if you can find any issues with strokers and the Renix system. He'll find fewer issues with the Renix system there than with Chrysler's system. LOL. I'm putting a 4.6 into my Renix MJ with no fears. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted January 14, 2016 Share Posted January 14, 2016 I have strokers in two of my renix trucks and they run fine to me . If you're deadset on losing the renix , why not get an HO donor and switch to HO then ? Just an option .. Link to comment Share on other sites More sharing options...
cruiser54 Posted January 14, 2016 Share Posted January 14, 2016 I have strokers in two of my renix trucks and they run fine to me . If you're deadset on losing the renix , why not get an HO donor and switch to HO then ? Just an option .. That's interesting. Real life experience duplicated trumps fear and conjecture in my book. Thanks. Too bad we don't have a few folks on this forum with good Renix experience............ Link to comment Share on other sites More sharing options...
64 Cheyenne Posted January 14, 2016 Share Posted January 14, 2016 IMO, nuthin wrong with the Renix system, beyond technical differences, I like the fact that there is much info available on troubleshooting individual components with a multimeter VS the HO system where you plug in or flash for a trouble code that suggests where to start looking. Both systems are light years ahead of carburation. Two things would make me purposefully ditch the Renix system, a trashed unrepairable harness where I'd do a HO conversion with parts from 94 down (no air bag), and/or a 2nd gen conversion. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted January 14, 2016 Share Posted January 14, 2016 Just saw this topic/thread, gotta chime in. I've had 3 Renix Jeeps, 2 XJ's, current MJ. 89 XJ #1 had 280K on it when retired, 90' XJ #2 has 287K on it and still going strong in my son's hands. The MJ just cracked 200K. The only real problems I've had with any of them...I caused myself. Like the tranny swap wiring debacle (you know what I'm talkin' about) I would rather not have a phantom CEL popping up when the slightest little hiccup occurs, I rather not need an SYE to lift the thing more than 2". To me the Renix Jeeps are simpler (like me) and more rugged. The only fuel injection problem I've EVER had was caused by crappy stock injectors that cost $50 a pop. A little trip to ebay solved that for me for $99.95. Link to comment Share on other sites More sharing options...
neohic Posted January 14, 2016 Share Posted January 14, 2016 Howell makes a kit for the 258 using a GM TBI setup. It works really, really good too. Easy to duplicate also... http://comancheclub.com/topic/27392-back-to-jeeps-yj-fuel-injection-build/ Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 14, 2016 Share Posted January 14, 2016 I would rather not have a phantom CEL popping up when the slightest little hiccup occurs, I rather not need an SYE to lift the thing more than 2". To me the Renix Jeeps are simpler (like me) and more rugged. ^^ Most of that is poppycock. I've had two CEL's in over ten years, and one was self-inflicted. The SYE part I have no idea what you mean. OBD1 is lot simpler and more logical than a Renix system that won't run because one of it's many obsolete sensors is interfering with another because it's ground reading is .5 ohm high or it's output is .2V low. And the primitive junction box it has for "engine management" can't remember what it was doing the last time it passed traffic. :shake: What's probably true in your statement Charlie is that you might be more rugged. :yes: Too bad we don't have a few folks on this forum with good Renix HO experience............ Link to comment Share on other sites More sharing options...
Eagle Posted January 14, 2016 Share Posted January 14, 2016 Folks have strokers running with Renix systems on them. I don't see what the big deal is. Agreed. Bob Salemi is running one in an NHRA pro stock Comanche in Rhode Island. Basically it just needs bigger injectors for a stroker. Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 14, 2016 Share Posted January 14, 2016 Agreed. Bob Salemi is running one in an NHRA pro stock Comanche in Rhode Island. Basically it just needs bigger injectors for a stroker. Pretty sure he uses a FAST fuel injection system in his MJ drag truck, not Renix. Check it out. :thumbsup: Link to comment Share on other sites More sharing options...
A-man930 Posted January 15, 2016 Share Posted January 15, 2016 Go MegaSquirt. Report back to us with pictures and videos. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted January 15, 2016 Share Posted January 15, 2016 ............ What's probably true in your statement Charlie is that you might be more rugged. :yes: The truck is rugged, the owner is just crusty. :rotfl2: Link to comment Share on other sites More sharing options...
Eagle Posted January 15, 2016 Share Posted January 15, 2016 Agreed. Bob Salemi is running one in an NHRA pro stock Comanche in Rhode Island. Basically it just needs bigger injectors for a stroker. Pretty sure he uses a FAST fuel injection system in his MJ drag truck, not Renix. Check it out. :thumbsup: If he does, he has changed it. I know Bob personally and I did a bit of work on the truck and the engine while he was building it. It was pure Renix when he first completed it and started racing it. Link to comment Share on other sites More sharing options...
75sv1 Posted January 15, 2016 Share Posted January 15, 2016 I thought that some preferred the RENIX for a stroker, as it has a knock sensor. Link to comment Share on other sites More sharing options...
HOrnbrod Posted January 15, 2016 Share Posted January 15, 2016 Agreed. Bob Salemi is running one in an NHRA pro stock Comanche in Rhode Island. Basically it just needs bigger injectors for a stroker. Pretty sure he uses a FAST fuel injection system in his MJ drag truck, not Renix. Check it out. :thumbsup: If he does, he has changed it. I know Bob personally and I did a bit of work on the truck and the engine while he was building it. It was pure Renix when he first completed it and started racing it. He changed it out and after a bit of a learning curve that's the system he used to set the 1/4 mile record, not Renix. There was an ongoing dialog in the strokers forum from WorldsFastestComanche awhile back about it. He was picking Bob's brain for go-fast engine knowledge when he was gearing up his rig. He also got a lot of help from Hesco's Lee Hurley. WFC learned a lot from both of them. Link to comment Share on other sites More sharing options...
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