86 is a good year! too bad you dont have an es so you would have an LSD diff.
well here is what you need to do.
To gain a higher redline out of your eta you will need to chip it or take out the 1.0Motronics that is slowing you down and upgrade to what all 88-89 e30 have which is 1.1/1.3Motronic, the only difference in the 1.1M and 1.3M is that 1.3M uses the updated #173 ecu. which is what is going to give you your higher redline which is 6800 and if you chip the #173ecu you will have 7000+ redline.
so now that you know what you need to do here is a link to my 2.7i how to and 1.1/1.3 Motronic upgrade!
Old 2.7i thread with pictures
(1986 325es) 2.7i, 1.3 motronic, restoration - e30tech.com Forums 1.3 Motronic Up-Grade & 2.7i How To - R3VLimited Forums
Let me know if you have any questions
