Recent content by sr5guy

Honcho The U.S. bins are pretty much the same. The later revisions have some code patches and slight calibration changes. The code on the MCU is the same so you can run any binary you want. If you ran a 94 binary in a 91 ECU you would be performing a firmware upgrade. -Matt

Old Guy The fuel and igniton maps aren't gamma x rpm. The X-axis don't directly correlate to MAP voltage but is closely based on it. I am calling it an estimated load value of 0-100%. Off the top of my heas 0% is around 0.5 volts and 100% is around 3.84 volts. The ignition map's X-axis is...

I revisited the Legend and NSX definition this past winter and made some significant changes and updates to it. I made some additions and updates to the oxygen sensor and idle parameters, cleaned up a bunch of loose ends and clarified the language a bit. One major change I was working on was an...

TL;DR If you would like my help feel free to ask me specific questions, all I see is two text walls of assumptions. -Matt

Old Guy I haven't seen a post that long in years. If you were able to crack open a disassembler and peek at the code running the stock NSX, I bet you'd change your mind quickly about aftermarket ECU's. I have successfully reverse engineered almost 2 dozen unique platforms from foreign...

Your assumptions are unfortunately misguided. A fuel map is, in essence, a map of volumetric efficiency. I can tell you haven't taken a look at the definition :). There are far more adjustments with even this 26 year old ECU than with any aftermarket platform, including barometric pressure...

Honcho if you are tuning for ITB's I can probably cook up some custom code to blend AlphaN(tps)/SpeedDensity(MAP) based on your criteria. Old Guy I shared the definition publicly, on this forum almost 4 years ago...

Wow Abe, completely missed your post. That's really cool. Sure is dead here, everyone must have moved over to Facebook. -Matt

No, you can't read the NA2 maps, they're not chip-able, at least not easily. -Matt

Are you talking about address hit tracing with the Moates Ostrich 2.0? If so, simply press the "A" button on the table. -Matt

1. Myself and DDozier did a scientific before and after RDX injector power test. The car we tested on was running extremely well on the stock injectors before we started. It was mostly stock with headers and it dyno'd 276whp IIRC. The only change made was installation of RDX injectors and a...

Hey Andreas, I received your email. I must have missed adding in the VIS settings for the NSX as I have them defined in the hack. I will make it a point to add them in at the next update, as well as the VTEC specific rev limters. This project has taken a bit of a hiatus since I moved to...

R4 is the only difference. Never tried the bluetooth interface, IIRC they were never able to get it working. The Ostrich is a stand alone flash module. IIRC it has a backup battery good for 20+ years. -Matt

All you need to do is force the ECU into MAP sensor limp mode, and clear the MAP sensor codes manually. By default it uses the TPS for LOAD calculations (alpha-n LOAD) when the MAP sensor fails and even has some TPS - LOAD scaling tables built in for for adjustment. I can assist you if you're...

I've used the Moates 2 timer a handful of times and can confirm that it works and fits within the NSX's box. I suggest a low profile socket installed in the NSX ECU. FYI: the stock 32k chip is split into 2 16K sections, low side = manual transmission, high side = automatic transmission. Only one...