Chipping 86 ecu to convert to turbo?

  • scartail
    scartail
    Junior Member
    • 3

    Chipping 86 ecu to convert to turbo?

    Hi guys,

    First off I don't have a Z31.

    I have a 280z that I plan to drop a L28ET in. I was doing some research on what I could use to manage it, and came across the idea of using a turbo Z31 ecu (http://forums.hybridz.org/topic/2623…xt-swap-guide/). Said to be cost effective (for what I want to do) and with the use of the MAF, a needed improvement over the original.

    Anyhow, further searching led me to a write-up on http://z31.com/, which compared the differences in the various ECUs. I was at the JY the other day and stumbled onto an 86 z (n/a, auto). Figuring that I may make use of it and for 50$ it was worth the try. I yanked the ECU with all the harness ends with about 6" of wire.

    To make the conversion work, I need to re-chip the ECU with a turbo map. For the life of me, I can't find a write-up on this. The closest I found was: http://z31performance.com/showthread…rformance+chip. Which turned out to not be chipping related.
    And though not going down the NISTUNE route, I read the install note, it looks like IC4 (28 pin) and IC5 (24 pin) are removed. But I don't want to assume.

    I have a Moates Burn1 and a couple AT29C256 chips (not sure if they are the right for chips) laying around from playing with Hondas.

    Secondly, from http://z31.com/prom/liveedit/, there is a stock image for a SS. Is this a good starting point? Again, the goal is a reliable, fun motor. Eventually, I'll turn up the boost, and probably run 450cc injectors (because I have a set laying around). But if I can get a more reliable streetable 250-300 whp, I'll be happy.

    Anyone help? Or point me in the right direction? Thanks in advance.
  • ozzyrulez
    ozzyrulez
    Senior Member
    • 631

    #2
    I'd honestly recommend getting Nistune. It would make your life much much easier than burning eproms
    2007 Nissan 350Z Base: 13.476 @ 103.870 MPH

    1988 Nissan 300ZX Shiro Special New Setup 11.979@117.34 MPH
  • scartail
    scartail
    Junior Member
    • 3

    #3
    Originally posted by ozzyrulez
    I'd honestly recommend getting Nistune. It would make your life much much easier than burning eproms
    I want to reuse what I already have. If I didn't have the chips and the burner laying around, and finding a cheap ECU, I would have probably gone with MS. I understand the point of a more sophisticated EMS, but I'm looking for something operational and a modest improvement at a good price. I'm not looking for a V10 killer.
  • scartail
    scartail
    Junior Member
    • 3

    #4
    After reading the install instructions for NISTUNE (thanks to the aussies), I think to map the turbo image on the 86 ecu, I need to:

    Again, the plan…

    Remove IC4 and IC5 chips (removing the old image)
    Jump J3 to J4 (disabling the IC5) Any other mods?
    And since I'll probably do several iterations off burning, I'll socket the IC4 location.

    Any corrections?

    Question left, is the AT29C256 the right chip to replace the existing 28-pin?

    Ps: I probably should have titled this thread as: "Chipping 86 n/a ecu with turbo image?"… converting would be a little incorrect.