IMHO a $30 meter is about the same as $2 meter. As JJ says, learn to use it properly. Anything that drains a fully charged battery in 15 minutes will be steaming hot, so your hand should be all you need..
All paints (and plastics) fail with enough cumulative exposure to UV. You can reduce but never eliminate this problem. UV photons are like little bombs, they whack into your paint and release a blast of energy (hv) that slowly but surely destroys the polymers in the paint.
The knock control is designed to run the engine on the edge of detonation, which is good for fuel economy and responsiveness. It is not really capable or designed to save the engine in the case of a sudden fuel failure.
I do not have a JDM ECU, so whatever secrets are in them has yet to be...
Probably not. First it has to react to detonation, so at least one cylinder will fire lean, then the total correction is limited to a maximum value defined in a table of rpm and load, but typically no more than 15 degrees. That would not be enough to save the engine I would guess.
If knock is detected, timing will be retarded on the next cylinder event (120 degrees of crank rotation), and the amount is based on the learned knock value for the rpm/load band and whether the detected knock event was severe or minor. I would call that pretty fast.
Attached is an image of the timing map. Haven't figured out how to attach files to this post. I would not use this map without a very capable knock-sense algorithm monitoring things. The stock ECU knock sensor is fast and pulls timing a lot during normal operation.
RolluS, the hardware design is frozen and we have a number of boards out in the MR2 community where they have been performing well. Right now the bottleneck is on the software side of things. The current interface is reasonably complete for datalogging, but needs work on the tuning side of the...
Nick, I meant that from the microprocessors view inside the ECU the GTE and GE are the same. The IGda IGdb signals are generated by 3 Denso ICs inside the ECU. The processor just computes the timing signal (IGt). If it wasn't that way, the ECU would not work if the processor malfunctioned, and...
Viton is generally compatible with hydrocarbons, but incompatible with ketones such as acetone, and organic acids such as acetic acid. So acetone is probably the best solvent to use to get rid of the viton coating.
This was the email I received...
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The ECU processor computes and controls the single IGt signal as I noted above. There are three Denso chips separate from the processor that take the NE and Gx CPS signals and compute the A/B control signals to select one of the three coils. This allows the engine to run (limp mode) even if the...
Dwell is set to 30 degrees for low rpm, and 60 degrees at high rpm if advance permits. At high rpm with advanced timing there is not enough time to support 60 deg, so drops back to 30 deg.
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