Evo8 ECU in a 1G DSM in the works!
Jul 27, 2009, 08:46 AM
#33
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Knock sensor being 'deaf' ?
Whats up guys, I have been using an EVO ECU in my 2G for a few months now and LOVE it! I have a 6-bolt engine in my 2G with a 1G style CAS.
As far as the 1G knock sensor being deaf goes: I'm not sure if i have a 1G knock sensor or 2G knock sensor on my block any more and haven't really thought about the issues this might produce until reading this thread! I did the 6-bolt swap a long time ago and have forgotten if I did indeed swap the knock sensor or not.
I thought knock sensors were just a pickup for the signal and no processing of the signal takes place at the knock sensor. The ECUs may have different ways to process the signal (analog vs digital) but that this had no implications on the 'sensor' that the noise was coming from? this is because NO processing takes place at the sensor itself. I understand the knock sensor may be tuned for a specific Hz, but are the knock sensors from a 1G 2G and evo really that different? I can not imagine they are very far apart because all the 4G63s we are talking about are very similar in respect to the characteristics that factor into tuning a knock sensor Hz.
I can log knock (and lots of it) so I assume if I can read knock output that I at least have the 2G sensor on. But maybe i have a 1G sensor and thats why i get some odd knock counts at part throttle.
Thanks for your input on this issue.
As far as the 1G knock sensor being deaf goes: I'm not sure if i have a 1G knock sensor or 2G knock sensor on my block any more and haven't really thought about the issues this might produce until reading this thread! I did the 6-bolt swap a long time ago and have forgotten if I did indeed swap the knock sensor or not.
I thought knock sensors were just a pickup for the signal and no processing of the signal takes place at the knock sensor. The ECUs may have different ways to process the signal (analog vs digital) but that this had no implications on the 'sensor' that the noise was coming from? this is because NO processing takes place at the sensor itself. I understand the knock sensor may be tuned for a specific Hz, but are the knock sensors from a 1G 2G and evo really that different? I can not imagine they are very far apart because all the 4G63s we are talking about are very similar in respect to the characteristics that factor into tuning a knock sensor Hz.
I can log knock (and lots of it) so I assume if I can read knock output that I at least have the 2G sensor on. But maybe i have a 1G sensor and thats why i get some odd knock counts at part throttle.
Thanks for your input on this issue.
Last edited by acidikjuice; Jul 27, 2009 at 08:49 AM.
Jul 27, 2009, 09:50 AM
#36
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You guys never cease to amaze me with this stuff!!
Congrats on the new breakthrough!! You just raised the bar on what 1g's will be selling for shortly!!
Congrats on the new breakthrough!! You just raised the bar on what 1g's will be selling for shortly!!
Jul 27, 2009, 10:17 AM
#37
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The 2g knock sensor appears to have the same setup as the evo sensors AFAIK, nearly all of the signal processing is done internal to the ecu without a coprocessor or external chip. The 1g knock sensor appears similar and probably is nearly the same except that the signal is processed by a controller that resides within the ecu case which feeds the input for the ecu knock signal.
Jul 27, 2009, 10:31 AM
#38
Those MAF scalings actually aren't correct. I posted the correct scalings in the other thread we had here about the MAF adder. I have checked and double checked them. The good thing is that even with wrong scaling you can get the car to run pretty well by tuning.
Jul 27, 2009, 10:32 AM
#39
Cool thanks. I found my timing issue to be the starter signal input wire. It was supplying +12v constantly which made the ECU keep the timing at only 5*, assuming that I was still cranking over the engine. Now I have to confirm every wire since they did a 4g63 swap in this mirage and obviously didn't hook up the wires correctly. fun fun.
Jul 27, 2009, 10:44 AM
#40
Would you mind reposting a link to the post you made in the other thread to help others that happen to find this thread first???? My 2G MAF scaling is WAYYY off (used the DSMTuners scaling) so I would like to try yours.
Last edited by Jack_of_Trades; Oct 19, 2010 at 08:41 AM.
Jul 27, 2009, 11:51 AM
#41
https://www.evolutionm.net/forums/ec...maf-adder.html
This is the thread, but I didn't explain it as well as I thought. When I get home I can post it up.
This is the thread, but I didn't explain it as well as I thought. When I get home I can post it up.
Jul 27, 2009, 01:55 PM
#42
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Very cool stuff!
I just missed a cherry blue 90 GSX last week, single owner, garaged it's whole life, blown turbo for $1500.
Time to go DSM shopping again.
Bryan
I just missed a cherry blue 90 GSX last week, single owner, garaged it's whole life, blown turbo for $1500.
Time to go DSM shopping again.
Bryan
