Should I replace my 1988's ECU?
08-14-01, 10:51 AM
#1
Passenger
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Should I replace my 1988's ECU?
I am reading and learning a lot on this great forum. I am curious. I have read that the ECU in the 1988 T II's is inferior to the stock ECU's in the 1989 an above's ECU's. Is this a fact? I also read somewhere that you can make a test rig, set it up, and even use it while the car is running due to it's lack of Static RAM allowing you to make a test rig if you would like and bring these ECU codes (with some LED's) into the cockpit, thus giving you real-time access to them. Can some please elaborate on this? Should I or CAN I replace my functioning ECU with a later Gen2 model?
08-14-01, 04:06 PM
#3
knowledge junkie
I've seen some chip replacement posts (aka ECU reprogramming) that basically maxes stock fuel, heightens fuel cut, and allows more boost (in combination with the boost bill and waistgate I believe).
They issued a 2nd ECU in either 89 or 90 that was better quality boards to prevent some of the grounding and cold sauder joint problems.
They issued a 2nd ECU in either 89 or 90 that was better quality boards to prevent some of the grounding and cold sauder joint problems.
08-14-01, 11:36 PM
#4
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Location: Lawrenceville,Georgia,U.S.
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The '89 and above ECU is not a drop in replacement for the '86-'88 ECU. However, it is true that you can display the ECU codes in real time - we have that setup in my '87 TII. Also, there is a third output that is useful, the O2 sensor output. While not as good as an A/F ratio guage, it tells you if you're leaning out, and that's very important. Check out the following site: 2ndgenrx7.freeservers.com/technical information. Look at the article on Reading Error Codes for a complete writeup. Peace!
Irv, Keith's dad
Irv, Keith's dad
08-15-01, 01:58 AM
#5
Passenger
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Thanks To All
I just wanted to thank Irv, Tboost, vaughnc out there for the comments on this ECU question. You all have very valid points here and I appreciate all of them. However, it looks like I will, at least for now, follow tboost's advice and take the path of least resistance. The ECU does after all work fine, so I may as well wait until it go's Tango Utah on me and THEN replace it or part of it with a kit that vaugh had mentioned. Oh yes Irv, I had been to that sight before and found it kinda useful, useful enough to make it my home page! Thanks for that tip and if I get the time I wouldnt mind doing such a mod. to my 2G TII. So, thanks again guys/gals for the help and I have a pretty good feeling I will be touching base with you all again. Best of luck with your "babies". By the way; are ALL RX-7 owners as "enthusiastic" as the good people on this page (including myself)? I sure hope so!
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