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v8GTmac1

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About v8GTmac1

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    LOT

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  • Name
    Michael
  • Car
    2000 Lotus Esprit v8
  • Location
    Phoenix

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  1. I like boost Vs gear. Although being that the speedo is a universal VDO gauge, it can be calibrated directly to the VSS or I can order a VDO GPS module. Atm I will leave as is but I do need to ad a relay to turn compressor on and off. I have a output ready for turning off the AC when programmed to.
  2. I have something to add and would love everyones thoughts. Due to my recent Megasquirt ventures, I have realized that doing full sequential on the standard v8 equipment was not going to be possible. Reason being the crank pulley only has 4 vanes passing the sensor on a full revolution. The cam sensor is there to identify CYL #1. But I strongly believe you need 8 vanes on the crank for all cylinders to fire individually. The way it currently runs from the factory is only firing 4 times, 2 cylinders at a time completing the combustion. Thoughts?
  3. It's been running for a few weeks on Full Sequential MS3x and I couldnt be happier to drive her in this awsome weather. It is on 4.5psi wastegate pressure with no Duty going to the boost solenoid. 23 degrees of timing at those boost levels but i have no idea what it should be. The factory ECU is currently only doing the job of working the SPeedo gauge which reads 5 MPH High. Currently the AC needs to be re-wired due to the oem ecu not getting a CAM signal thus no longer getting RPM readings. Oh and at 4.5psi the 252cc Mustang injectors have allready Max'd out the higher you go into the REVs. I have the secondaries and the 2nd F/P hooked up for staged injection but needs more seat time with the laptop to tune it's progressive nature, it gets really rich! https://www.youtube.com/watch?v=K6M4RZW7gpg
  4. Yes Aeromotive is the one who makes an adjustable FPR for the Chevy fuel system we use. Bigger injectors then I already invested in is another thought. Bigger single fuel pump as well and Leave the secondary in place if the 1st leaves me stranded. Im thinking the reason for the complexity was to have smoother control of smaller injectors rather then larger when at low duty cycle (idle) which in return nets better mpg. And perhaps the entire system is capable of 500hp as we all know the 918 can produce any day of the week and twice only Sunday..... At this point without continued investment into experimentation, I will most likely mimic the oem setup and run it all progressively.
  5. You know couple years back I was able to get the Bosch 88 pin connector from diyautotune. Not anymore on their site. But it what I do k ow is that there a bunch of junkyard ecu using the same connector. BMW and Hyundai just to name a few. That’s how I would do it , cannibalize a junked ecu.
  6. Oh and I recieved this in the mail yesterday. THis will be so much fun. Full sequential on everything, idle control and boost along with water injection. i'll be able to optionally run the secondary pump and injectors progressively.
  7. guess what, I made this new video and if you notice i'm reving a little higher then my last vid. I'm now going lean instead of rich at the higher end. Problem was the factory ECU was turning on the 2nd fuel pump mid way thru the REV range, upping the pressure so high it pegged my AFR to the rich side all the sudden. And the Lotus manual states the secondary fuel pump and injectors are for high speed only 130+ mph my arse.
  8. Very interesting stuff I wonder how you program their ecu? So in the UK do you all have The air pump for the cats and Evap components?
  9. Hmm interesting thread. I wonder which company in Germany repaired my v8 ECU almost 2 yrs ago. Took them 8 mo and the day after the previous owner installed it, I bought the car and drove it home with a flame coming out my tailpipe from a misfiring cylinders on the left bank. Coilpack and igniter shot I never knew what the initial repair was for but I do see some repair work to the board and it has been chipped. I hate chips lol Although I would not be buying into this, I would love to brainstorm. All v8 megasquirt for me running and tuning. It’s all relative to this thread though. This guy.....
  10. Here’s an explanation. That system is using Dumb coil Without ignitors. The CDI box has the ignitors instead. The AEM system has another small module with the brains taking the crank and cam signals and with your programmed settings will run engine. More the AEM brain is taking the existing firing signals intended for the factory coilpacks and re-directing them to the CDI box to fire 8 coils instead but still are fired in wasted spark Not sequential.
  11. I always like a good discussion so I’ll reiterate what I’ve been trying to state The factory computer does indeed have the built-in igniter’s posted it in my picture in the link I posted above you can see them all lined up but as I mentioned only 4 are being used for the factory coil packs which are dumb coils without built-in igniters Without built-in igniters they require 12 V pulsed signals from the computer instead Of 5v. Signals on the Toyota coil’s you mentioned The factory computer has been built with eight igniters for a reason unknown so my question is what vehicle did they take this computer from or was the original plan to run 8 individual Dumb coils until they cheaped out at the factory and re-wrote the code to only trigger 4 of the igniters in wasted spark But of course there’s always a possibility that all eight igniters are being triggered and only 4 are used which are the correct 4 in this firing order. Thats why why I mentioned LEDs as a test. Its a project I don’t expect anyone will tackle but I sure can since my factory ecu is still running but None if the original ignitors are connected to anything so consequently I have 8 CEL codes for each lol 8 LEDs to the 12v pulsed leg of each of the 8 ignitors run the engine at the lowest rpm and record them flashing with camera in slomotion to capture their firing order. Then you know which is for what cylinder and have an attack plan. Is any of this clear enough to understand? Or do I need to tackle this job and post a vid ?
  12. https://www.lotustalk.com/threads/esprit-v8-coil-on-plug-conversion.77429/ You could look look into this as well. I almost did but I’d have to call AEM to better understand the install.
  13. I posted some pics of the ecu internals. All someone needs to do is hook up some LEDs to each of the 8 ignitors transistors to see if they are all actually being triggered. Then to make it more complicated you would have to organize them in the firing order and watch the LEds in slow motion to verify. Haha sounds fun?
  14. This remains to be answered
  15. Never responded here I have a copy of the manual with the yellow Esprit on the cover But I still had to back trace every wire due to Lotus not clearly specify the colors of each wire By the way sharing the sensors for the crank in the Cam was an issue and anything above idle That’s why all my initial videos were just idling that’s why all my initial videos were just idling Something to do with bias resistors in both ECUs conflicting with each other. But if someone still wanted to use them easily enough just remove the factor ECU from the equation and I already posted the trigger settings for the factory sensors
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