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The fuel cut can be at higher fevs if the coolant is cold. I recall for a cold engine the numbers are 2300 on/2900 off dropping down to the more familiar 1200/1600 (1800GE) when fully warm. The difference is always 400 rpm (600 for GE). Still, unless the OP never lets the car warm up it is...

I think you will need to have a Lex, because the dynamic range of the stock AFM will still saturate for air flow above a given value. There would not be any way to calibrate that out. ---------- Post added at 03:14 PM ---------- Previous post was at 03:11 PM ---------- I have got the ECU to...

The L1,L2,L3 outputs are a 3 bit digitization of the first derivative of the throttle position. The code calculates the difference between the instantaneous throttle position and a running average position, and then uses a lookup table based on this value to select the L1/L2/L3 bits. There is a...

You can check out post #139 for a discussion on the Techtom scrambling. We have not looked at Mines but it can't be much different i would think. I've powered up the ECU with the Flash board installed but it is not working properly. :icon_mad: More debugging underway.

Did you look at the Suprasport Boss/Boss Jr and Jeff Tamulis JT series turbos?

Not quite. I have an adapter board that plugs into the ECU board, and then use some FFC ribbon cables to go to the Flash board. This weekend I finished a simple ECU simulator that allows the ECU to be powered up and some basic functionality tested. This is easier than having to plug the ECU...

I actually have that ECU because LordDigital loaned it to me a while back. It was the ECU where we learned how they scramble the data, and also allowed us to identify what stuff they change. I need to send it back to him... I am really close to my first attempt to run the ECU with our board...

The pic is there in post #1 !!!!!

Okay, an updated IDA module is on Assembla. It fixes the BRN problem Manual discovered, and it add a lot of outputting enhancements that Jason (3rotor) worked out . Finally, for those working on later MCUs with the larger ROM, extended outputs, and so on, there i an updated cfg file for that...

The 1JZ uses the same dual ECU architecture of the MKIV SUpra, MK3 MR2, Camry etc of that era. Jon Sole has made good progress on using one of our boards to replace the fuel ECU. Ultimately, he plans to replace both ECUs so that ignition can be modified too. I'll leave that to him for now...

Two pictures of the A/T ECU. The markings says TEN, as in Fujitsu TEN.

Very nice, thanks. The automatic transmission ECU uses a Fujitsu chip. I wonder if it is related to this one.

Shoot, the TD6335 seems to be a mystery. That is interesting about the knock sensor. I wonder if they used fujitsu as a second source because the instruction sets of the Knock sensor (at least for the 7M ECUs) is the same as the main chip which is thought to be Toshiba. While the Denso...

I am pretty sure the stepper motor driver is the MP4501 (it is for the 7MGE). Do you have any additional info on the TD6335? Pinouts?

Henri (Brutus) has done all the hardware analysis. He hasn't published anything on the pinouts of those parts. The tall SIP packages actually contain hybrid circuit boards with components attached to a ceramic carrier. Very advanced for the time, typically only seen on military systems of...

Unfortunately you will not find datasheets for the Denso parts, at least I haven't. From trial and error we know From 7MGE.... 40pin denso is used for DSP of the knock sensor. It communicates to the main processor using a few of the ports. HC150 (5V regulator) D949577 is the ADC MF165...

Calm down Evil, JJ' signature was not targeted to you. I believe I am well qualified to understand the intricacies of the starting circuit schematic having a PhD in Electrical Engineering from a top tech university in the USA and over 75 peer reviewed publications and 6 patents, etc. Yes...

A good solvent for silicone oil is Vertrel Silicone Solvent from Miller Stephenson. Brake cleaner and the like really don't work that well.