cruiser54 Posted June 13, 2016 Posted June 13, 2016 Came out of a 90 Renix 4.0 with manual trans. Can be used in auto trans applications. Most horsepower from this ECU. I tested it in my 87 MJ for over 6 months. $50 plus shipping from Prescott, Arizona
onlyinajeep726 Posted June 14, 2016 Posted June 14, 2016 When you say it will work with automatics, what's the difference between it and an automatic one? I guess I'm not really sure since the AW4 has it's own control module. But I'm interested in it. PM me?
cruiser54 Posted June 14, 2016 Author Posted June 14, 2016 I ran it for almost a year on my auto MJ. I think there's some circuitry/programming for idling in "gear" that it may not have. I can't really tell the difference between it and an automatic one.
cruiser54 Posted September 19, 2016 Author Posted September 19, 2016 When you say it will work with automatics, what's the difference between it and an automatic one? I guess I'm not really sure since the AW4 has it's own control module. But I'm interested in it. PM me? onlyinajeep726 bought it. How do you like it? I now have a factory reman late ECU for sale. $100 plus shipping from Arizona.
HOrnbrod Posted September 19, 2016 Posted September 19, 2016 Most horsepower from this ECU. I tested it in my 87 MJ for over 6 months. Has this HP gain ever been documented on a dyno, or is this a butt dyno assumption?
cruiser54 Posted September 19, 2016 Author Posted September 19, 2016 Most horsepower from this ECU. I tested it in my 87 MJ for over 6 months. Has this HP gain ever been documented on a dyno, or is this a butt dyno assumption? Straight from Jeep. Their numbers. Having had 13 Comanches as demos at the dealership, one new every 5000 miles or so, I can testify to the differences in power. And anyone who has done this can feel the difference.
HOrnbrod Posted September 19, 2016 Posted September 19, 2016 87-173 88-177 89 and 90-182 Thanks. Is the Renix ECU the sole reason for the 89-90 HP increase?
cruiser54 Posted September 19, 2016 Author Posted September 19, 2016 For every increase from 87 to 90.
onlyinajeep726 Posted September 20, 2016 Posted September 20, 2016 When you say it will work with automatics, what's the difference between it and an automatic one? I guess I'm not really sure since the AW4 has it's own control module. But I'm interested in it. PM me? onlyinajeep726 bought it. How do you like it? It makes enough of a difference that I've noticed a better throttle response, much smoother idle, and a slight (very slight LOL) increase in MPG. I'd definitely recommend it to Renix owners, especially any '87 owners. Coupled with Pete's/Cruiser54's Renix tips and tricks, you'll REALLY notice a difference!
HOrnbrod Posted September 20, 2016 Posted September 20, 2016 It makes enough of a difference that I've noticed a better throttle response, much smoother idle, and a slight (very slight LOL) increase in MPG. I'd definitely recommend it to Renix owners, especially any '87 owners. Coupled with Pete's/Cruiser54's Renix tips and tricks, you'll REALLY notice a difference! Maybe it'll keep up with a rough running HO now. :rotfl2:
cruiser54 Posted September 20, 2016 Author Posted September 20, 2016 It makes enough of a difference that I've noticed a better throttle response, much smoother idle, and a slight (very slight LOL) increase in MPG. I'd definitely recommend it to Renix owners, especially any '87 owners. Coupled with Pete's/Cruiser54's Renix tips and tricks, you'll REALLY notice a difference! Maybe it'll keep up with a rough running HO now. :rotfl2: No. It won't keep up. It will surpass it.
1989 comanche mj Posted September 20, 2016 Posted September 20, 2016 I have always thought the 90 was the fastest 4 liter that also got the best MPG. Don't the renix engines have the same torque as a HO but at lower rpms?
cruiser54 Posted September 20, 2016 Author Posted September 20, 2016 I have always thought the 90 was the fastest 4 liter that also got the best MPG. Don't the renix engines have the same torque as a HO but at lower rpms? Torque is the same I believe. The peak horsepower is at a higher RPM, and 8 more than Renix, with an HO.
cruiser54 Posted March 10, 2017 Author Posted March 10, 2017 I think that was meant as a question :dunno: Who knows?
Big Dan Posted April 10, 2017 Posted April 10, 2017 Probably so, but, is there a difference in the 2.5 and 4.0 ECUs?
onlyinajeep726 Posted April 11, 2017 Posted April 11, 2017 Is this still available? 50$ shipped? Zip is 93444 No, I bought it last year. With that said, Pete (Cruiser) likely has more. Probably so, but, is there a difference in the 2.5 and 4.0 ECUs? Yes, there's a difference, especially for '90 and before.
Big Dan Posted April 11, 2017 Posted April 11, 2017 Good deal, thanks for the info. Sent from my Nexus 6P using Tapatalk
cruiser54 Posted April 11, 2017 Author Posted April 11, 2017 I know of one in Scottsdale, Arizona for saLE.
Crash Posted April 11, 2017 Posted April 11, 2017 I know of one in Scottsdale, Arizona for saLE.Tell me more.
Recommended Posts
Archived
This topic is now archived and is closed to further replies.