Inwhile we all marveled at the news of General Motors' stunning new Tuned Port Injection debuting on '85 Vettes, a far more important automotive technological breakthrough was taking place at Toshiba. Okay, so it wasn't exclusively or intentionally an 'automotive' technology, but the invention of 'Flash Memory' by Toshiba's Dr. Fujio Masuoka made more of an automotive impact than we'd have ever expected. Besides becoming the memory of choice for digital cameras, USB thumb drives, and computer BIOS, flash memory also became the first choice for automotive control computers.
Before flash arrived, automotive computers relied primarily on erasable programmable read-only memory microchips, aka EPROMs or just 'chips' for short. EPROMs generally worked fine as memory devices, but ultimately reached demise from two key disadvantages: high cost and poor serviceability. The cost of the quartz-laden chip itself was expensive, and making it easily removable for service made the computer more expensive as well.
Flash-based memory was comparatively inexpensive, and reprogramming was a rudimentary process that could now be done through the assembly line diagnostic link ALDL connector. The spiffy new controller featured kilobytes of flash memory and two bit Motorola series processors. It actually used two separate computer boards, each with its own processor and flash memory, which many thought were independent for engine and transmission control, but GM referred to them as the Event and Time processors.
Know Your E67 ECU
The controller would remain unchanged through and was recognized with the service code The Vette controller used service code The LT1 PCM for '96 was similar in architecture to its predecessor, but featured a faster series processor and a doubling of one memory chip's size-for a total combined flash memory of kilobytes.
The service code for '96 was The module was practically a carryover and is interchangeable with modules, but it hailed under a new service code of The LT4 Corvettes also featured a relaxed knock module, which enabled more aggressive spark advance.
Thanks to its plug-and-play interchange-ability, this removable knock module, identified by GM Part Numberbecame a transplant favorite for LT1-based '96 and '97 cars.
Besides the knock module difference, the difference between LT1 and LT4 controllers was limited to the calibration. A completely new PCM was developed to control the new engine architecture. The '97 LS1 module was designed around a much faster Motorola series processor.Which ECM should you use on your LS swap? OE or Aftermarket?
The unit's memory was also cranked up, now with a whopping kilobytes on board. The pumped-up processor and memory allowed for a single integrated computer board, responsible for both time and event related computation.
The module remained identical for as well, and had a service code of A clean sheet approach to engine control was applied for the LS1 as well. The General still used familiar algorithms, such as short and long term fuel trims, but the mapping took on new looks and the interaction became more sophisticated, capitalizing on the addition of a crank position sensor and coil-on-plug ignition. However, the LT1 individual cylinder fuel trims were gone.
The connectors look practically the same as those on ''98 PCMs, but the small-er body of the new '99 PCM made it clearly distinguish-able. Even though the connectors ap-pear the same, the PCMs are not inter-changeable and the pin-outs are vastly different.
Flash-Based Factory PCMs - Tech - In A Flash
Internally, the redesigned LS1 controller featured tighter packaged electronics, but still utilized the Motorola chip, albeit with a faster clock speed. The '99 PCM carried over unchanged forand the two share a service code of From a operating standpoint, the big news for '99 was the extension of the MAF table range. The '99 peaked at 12, Hz, up from the '98 peak of 11, Hz, which was easily exceeded. The increase in recognized flow potential carried out in load tables as well, expanding the peak from 1.
The extra range enabled tuning for big engines. The faster processor made chugging through the maps at high rates aka high rpm more efficient as well. Additionally, some of the internal memory was moved around, making re-flashed, retro-fit interchangeability with ''00 questionable.Shopping Cart 0. Tech Tips - Aircharge vs.
September 24, Posted on Jun 11, by Brett McClelland. The challenge every good tuner has - and one we constantly work to overcome when teaching our students how to tune, is the variety of changes that these ECMs have experienced over the years.
This article will focus on helping you understand the differences, strengths and weaknesses of these computers, so if you want to get better educated on these computers, read on!
It models the airflow for the computer to calculate fuel. The first in the line was the P01, which was used through aboutwith the best models denoted as anusually pronounced, oh-four-eleven.
This specifically references the P01 computers from to These modules are the more desirable versions of the preceding P01 due to a processor upgrade performed by GM.
The s are also much more robust than their "fragile" predecessors which are easy to damage while writing tune files to them, rendering them permanently damaged. It will require the re-pinning of a few wires in the harness, but that is something done with relative ease. The next GEN 3 module to be released was the P59 control module. Flex Fuel gives the computer the ability to determine the Ethanol content in the fuel via a sensor placed in the fuel line supplying the engine. The computer can then seamlessly change the fuel output and spark advance on the fly to instantly compensate for a change in Ethanol content.
This attribute is desirable to performance enthusiasts with the increasing popularity of E85 as a race fuel alternative. The last hoorah for the GEN 3 computers is the E40 control module. E40s are strictly found in and LS powered cars.Fanta logo
This makes the Pontiac GTO one of the most prime examples for this computer. With this module came a glimpse of the future and what was to come from GM as they headed towards GEN 4 computers. The E40s are essentially a hybrid, a testing ground for GM to start experimenting with features and controls that would eventually become the GEN 4 computer. There are several weird and quirky things that GM was trying out in this computer that only lasted a few years.
For example, the Mass Airflow Table was split in half. The MAF defines how much airflow is drawn into the engine by measuring the electrical resistance needed to keep a wire a specific temperature inside the air intake; this is called MAF Hertz. The computer knows that at a given Hertz value, a specific amount of air is being drawn into the engine. The E40, on the other hand, splits the table into two with the first table reading from 1, to 5, Hertz while the second table reads from 5, to 12, Hertz.
Another example is the dreaded Injector Flow Rate Limit. The injector flow rate table defines how much the injectors flow. With that information, the computer knows how long to open the injector to get a desired amount of fuel out of it. Upgrading fuel injectors to something with a higher flow rate is a must in most performance applications. This is more than enough for almost every application. However, when the E40 was released, it introduced a flow rate table that has a limit of 64 pounds per hour.
It is not hard to exceed this limit when installing aftermarket injectors for larger horsepower applications and requires some unique tune changes in order to get them to work properly.
E67 Powertrain Control Module
This pound-an-hour limit hung around for quite a few years until being raised to pounds per hour in roughly These computers were not phased out until Original Poster. Search My Stuff What's New 3 12 24 E67 ECM. Linkin Original Poster 86 posts months.
Hi Guys, I wonder if you may be able to help I think it's referred to as an E-Rod Crate Motor. Can anyone offer any advice on where i might buy such an ECM? Behold81 2, posts months. You could use an LS1B Ecu and mod in the ls2 data easy enough. I would expect the ECU is available new online somewhere. Current Performance? Is there a reason you must use a specific factory ecu? ARAF 20, posts months. Monkfish usually carry ECUs in stock.Techlead wife reddit
I think the reason for the VIN number is that there's a variety of units for each engine. I'm guessing you don't know the details for the donor vehicle?Audio elisha song mr designer
Thanks for all of the replies everyone. Deerstalker is on and the search continues HappyMidget 5, posts 73 months. If boost, then yeah, the E Hi Stevie, Fact is that's what i've been told i need! I'm checking to see if it is easier to get an E38 with the tune required, then checking with my tuner that it's fit for purpose Currently, i can't find anyone who can supply E67 or E38 with a crate tune.
All seem to want a VIN.Also, due to the fact that the 98 Vehicles do not report an OS ID, the histograms will not automatically enlarge for boosted regions. You will need to create your own or load histograms from the saved folder. Pre-configured histograms for 98 2bar vehicles are located there. To apply the enhancement to your PCM please use the following procedure. This process is not guaranteed to be safe. If an error occurs during writing of critical operating system components and the VCM is powered down, the VCM will become unrecoverable via software methods.
You must populate this table for the engine to run at moderate speeds with the MAF enabled. Please note that although the table now extends up to Hz, the stock MAF may not function accurately at such high airflows nor may it be able to actually output such high frequencies accurately, you may need a differnt MAF or aftermarket unit to achieve this high range. There are three new VE tables.
The TPS Multiplier table can be useful for tuning large camshafts. Boost enrichment functions as per our other enhancements, with and enable MAP, hysteresis and Boost Enrich table. Boost enrichment also triggers open loop fuelling. It is a complete fuel cut to all cylinders when active.Remember Me?
What's New? Results 1 to 6 of 6. Thread: how many different e38's? Thread Tools Show Printable Version. I am aware of two e38 pcm's 09 and newer and Are 4.
I thought not, but an ebay seller programs to your vin there are a lot of those on ebay told me upon receiving my first vin from a express van, said that I needed to pay an extra amount because that is more expensive of an e Ok, its a swap, send for this LY6 silverado. Again, listing was 4. Told him that they are the same v6 and v8. Am I wrong?
Ordered brand new for a bricked Z Installed and read it, v6 saturn vue. Ok, took the bench harness to the dealer and had the stock file loaded. Am I missing something? Or is the seller trying to gouge me? Regardless, I asked for a refund. If I need enlightenment, I am certain that someone here will do so. GM has many different OS which run on the same platform and it confused the crap out of me for a long time seeing different tables on my tune from others having the same E38, reason being a different OS.
It must drive tuners and the HPT engineers crazy supporting all the variations and incompatability with the tune file and OS has probably bricked more than a few ECMs. I had a friend that used to work at a dealership who told me they flashed them all the time without regard for the source or year.
Obviously they were using a Tech 2 or it's equivalent. I build stuff HPTuners may be writing the entire file you upload to it, but it is not writing the entire contents of the flash memory which is why bricking happens non-compatible OS written over parts of the installed OS. If it did then it's obviously not changing everything like it's internal ID number. If you have the "right" equipment you can make any E38 look like another E38, but most people There was a hardware change inbut the exact model year and month varies based on the vehicle!
For example: and G8 ECMs are early e38 while Whether to include a contiguous sequence of two items from a given sequence of text. Only the names of the topics can be updated. If ommitted, both damped and non-damped trends will be tried and the best models returned. If it is omitted, then the missing values are filled via spline interpolation before fitting. Example: "median" description optional A description of the time series up to 8192 characters long. Example: "This is a description of my new time series" error optional Any of the following values to specify types of ETS models: 1 (additive), 2 (multiplicative).
Multiplicative error models are only available when the objective field has strictly positive values (greater than 0). Example: 100 name optional The name you want to give to the new time series.
Example: 2 tags optional A list of strings that help classify and index your time series. This will be 201 upon successful creation of the time series and 200 afterwards. Make sure that you check the code that comes with the status attribute to make sure that the time series creation has been completed without errors. This is the date and time in which the time series was created with microsecond precision. True when the time series has been built in development mode. See the Forecast Result Object definition below.
In a future version, you will be able to share time series with other co-workers or, if desired, make them publicly available. This is the date and time in which the time series was updated with microsecond precision. A map with keys (objective field identifiers) and with values (dataset identifiers). Those datasets contain a timestamp column, a copy the original data of the objective field, and one column per model with the values that that particular submodel computes for the objective time series.
ETS error type parameter: 1 (additive), 2 (multiplicative) The results of the ETS fits. A dictionary with an entry per field in your data.Combat SportsOutright Betting is all-in compete or not. Prices are offered for each fighter to win the fight and in the event of a draw all bets will be void and stakes returned.
Match Betting - All matches will be settled on the final score. For betting purposes extra ends will count. End Betting - For end betting purposes, if a Blank End price is not offered for a specific end, all bets will be void if the end is blank (0-0)DivingParticipants must make one dive for bets to have action otherwise bets will be void and stakes returned.
EquestrianAll-in compete or not. Bets stand regardless of riders changing named horses during an event. FencingOutright Betting is all-in compete or not. To Win Match - Prices are offered for each participant to win the duel and in the event of a draw all bets will be void and stakes returned.
If either participant is replaced with another fighter all bets will be void and stakes returned. Match Betting - Games must go full 60 minutes for bets to have action. Overtime is included for settlement purposes. All bets will be void if the match is not played on the scheduled date. Proposition Involving Players - Both players must take some part in the game for bets to have action. Player Markets - Both Player Points and Player Match-Ups are determined by the goals and assists for each player, as stated by the box score from the official Website of each league or tournament.
In-Play - Overtime is included for settlement purposes. The game must be completed for bets to stand, unless the specific market outcome is already determined. Modern PentathlonParticipants must pass the starting line for bets to have action otherwise bets will be void and stakes returned. PesapalloAll games must start on the scheduled date for bets to have action. For settlement purposes extra innings do not count. RowingAll-in compete or not. In the event of a race starting but not being completed (e.
Sailing - America's CupAll-in compete or not.Rcr414bhz codes
ShootingAll-in compete or not. SurfingOutright Betting - May be subject to a Rule 4 (Deduction). Participants must start Round 1 of a specified competition for bets to stand. The classification at the time of the podium presentation (as per official ASP result) will determine the settlement of bets.
If a specified event is not fully completed then bets will be void and stakes returned.
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