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  1. afree029

    C4 (1988) NOS Install

    Will do. Thanks for the follow up.
  2. afree029

    C4 (1988) NOS Install

    No. I decided it must be intended to be used in place of the inline fuse holder so I went that route. It works fine and does protect the fuse from the elements much better than the open case inline fuse.
  3. afree029

    C4 (1988) NOS addition - timing/spark plug recommendations?

    Also check out this thread on another forum that I have going. Some good info and pics. http://www.digitalcorvettes.com/forums/showthread.php?p=956202#post956202
  4. afree029

    C4 (1988) NOS addition - timing/spark plug recommendations?

    Sure thing. I hope to have it all installed by the weekend. I'll be sure to post updates and pics of the entire setup as well as things I learn along the way. So far the actual installation has been pretty simple. The hardest parts (so far) was finding a suitable way to mount the WOT throttle...
  5. afree029

    WOT activation switch for NOS

    Hailing all TPI NOS users. Where the heck did you mount the WOT activation switch? The bracket that came with my 05151NOS Kit does not lend itself to an easy mounting location near the throttle body bracket. I should mention that I no longer have the air pump if this somehow was the intended...
  6. afree029

    C4 (1988) NOS addition - timing/spark plug recommendations?

    I am in the process of installing a 150 HP WET NOS system on my C4. I have already upgraded the ignition system with the MSD Digital 6 box which I plan to use to retard the spark while on the bottle as I am running a Hypertech ThermoMaster chip (which I was told by Hypertech tech support does...
  7. afree029

    C4 (1988) NOS Install

    Getting started on the NOS install on my 88. While checking the inventory on my kit (Part No. 05151NOS) I found that I have one extra part and was wondering if it has a specific use. The Part I am referring to is a nice molded fuse holder with a cover and two red wires attached. I realize I...
  8. afree029

    Code 36 MAF Burnoff Circuit

    This one had me going for a while. Turned out to be an intermittent connection on the MAF sensor plug, harness side. What made it so difficult is that the connection seemed to be good most of the time when I had the MAF set in a position where I could watch the burn off wire when I engergized...
  9. afree029

    How much fluid? 700R4

    Great Idea. Should certainly cut down on the mess. I don't care how careful you are when that pan drops there is a mess. Thanks for the info.
  10. afree029

    How much fluid? 700R4

    Finally getting around to a long overdue change of the transmission filter/screen in my 88 and was wondering about how much fluid is required to refill after the filter change. Can't find it in any of my manuals. I have read that the complete system holds about 11.5 qts but I don't plan on...
  11. afree029

    Adjustable Fuel Pressure Regulator

    You've pretty much decribed exactly what I have in mind. Still having difficulty deciding on which heads though. I've read a lot of varying opinions about the AFR heads and a lot of good things about the Brodix Race-Rite series. Still gathering info at the moment. Any recommendations? I...
  12. afree029

    Adjustable Fuel Pressure Regulator

    Excellent info and advice. The adjustable fuel pressure regulator was one of those spur of the moment bolt on miracle devices that I am sure many of us are guilty of purchasing at some point. Falls in line with the air foil I suppose. But anyway I installed it and pretty much set it to the stock...
  13. afree029

    Adjustable Fuel Pressure Regulator

    Thanks for the info. I thought that was the way I remembered it working when I first installed it but it has been a while. I actually turned it from min to max and saw no change. I did a few more checks and it looks as though the in tank pump fuel pump pressure is low. Actually it starts off...
  14. afree029

    Adjustable Fuel Pressure Regulator

    This may sound like a dumb question but I have good reason for asking. I have an adjustable fuel pressure regulator (Mid-America brand) installed but the fuel pressure is reading lower than normal. When I first start the car it reads about 38 but after it warms up a little it drops down to...
  15. afree029

    MAF Burn Off Cyle Duration - 88 Coupe

    Can anyone tell me the MAF Burn Off Cycle Duration? I'm getting a code 36 on my 88 and have found the MAF wire is only heated for about 2 seconds after shutting down the engine (after it has reached operating temperature). Not sure if this is enough time for the ECM to get a good reading or not...
  16. afree029

    Code 36 MAF Burnoff Circuit

    OK I removed the MAF and started her up. Scanned the codes and sure enough I now have a 33 in addition to the 36 I had before. The 33 code makes since since the MAF input is actually pulled up to 5 volts through a current limiting resistor. Which means with the MAF disconnected the ECM should...
  17. afree029

    Code 36 MAF Burnoff Circuit

    The next test I am going to do is simply disconnect the MAF input to the ECM and see if I can force a 33 or 34 error code. This is more of a sanity check than anything.
  18. afree029

    Code 36 MAF Burnoff Circuit

    OK I ran the test I described in the previous post. Monitor the MAF output while activating Burn Off Circuit and MAF power control circuit. I don't know what the safe time frame is keeping the Burn Off activated so I tried to simulate the time frame I have measured which was about 1 or 2...
  19. afree029

    Code 36 MAF Burnoff Circuit

    I decided to run another test. I simply applied 12 V to E of the the MAF Sensor Burn Off relay with the relay removed. See attachment in previous post. While doing this I watched the inside of the MAF sensor. As soon as the voltage was applied the sensor wire turned a bright orange (which means...
  20. afree029

    Code 36 MAF Burnoff Circuit

    MAF Circuitry Operation Summarized - ECM Codes 33, 34 and 36 I have attached an Image of the MAF cicuitry to include the ECM inputs/outputs the MAF Sensor and both the Burn Off relay and the Control Relay. I did this because it seems that perhaps my request for assistance is not clear. This may...
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