Knock Ecu Hack For Retarding Time
#1
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Knock Ecu Hack For Retarding Time
THE QUESTION IS THIS
FIRST OF ALL I WANT TO KNOW IF OUR ENGINES HAVE A KNOCK SENSOR ?
IF THEY DO , WHEN THE ECU RECEIVES THE SIGNAL THAT A KNOCKING IS HAPPPENING ISN'T IT SUPPOSED TO RETARD TIMING AND ADD FUEL IN ORDER TO FIX THE KNOCKING. IF THIS IS TRUE WE CAN MAKE A DEVICE THAT EMULATES THIS SIGNAL SO THAT WE CAN ALSO RETARD THE TIMING A LITTLE.
oF COURSE SOME OF YOU MAY SAY BUT THEN HOW WOULD YOU KNOW IF YOUR ENGINE IS KNOCKING BUT THEN I WILL KEEP ENGINE TEMPERATURES LOW AND RUN IN HIGH OCTANE FOR LOW TO MID BOOST APPLICATIONS.
EITHER WAY I AM GOING FOR A STANDALONE BUT ISN'T THIS WORTH A TRY FOR BUDGET SYSTEMS?
ALSO HOW MUCH TIMING RETARD DO WE GAIN BY DOING THE CAM SENSOR MOD (BY DRILLING IT)
FIRST OF ALL I WANT TO KNOW IF OUR ENGINES HAVE A KNOCK SENSOR ?
IF THEY DO , WHEN THE ECU RECEIVES THE SIGNAL THAT A KNOCKING IS HAPPPENING ISN'T IT SUPPOSED TO RETARD TIMING AND ADD FUEL IN ORDER TO FIX THE KNOCKING. IF THIS IS TRUE WE CAN MAKE A DEVICE THAT EMULATES THIS SIGNAL SO THAT WE CAN ALSO RETARD THE TIMING A LITTLE.
oF COURSE SOME OF YOU MAY SAY BUT THEN HOW WOULD YOU KNOW IF YOUR ENGINE IS KNOCKING BUT THEN I WILL KEEP ENGINE TEMPERATURES LOW AND RUN IN HIGH OCTANE FOR LOW TO MID BOOST APPLICATIONS.
EITHER WAY I AM GOING FOR A STANDALONE BUT ISN'T THIS WORTH A TRY FOR BUDGET SYSTEMS?
ALSO HOW MUCH TIMING RETARD DO WE GAIN BY DOING THE CAM SENSOR MOD (BY DRILLING IT)
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you are only going to get as much fuel as the stock setup can provide, no matter what the ecu is asking for. I understand you are trying to go budget, but most people who have done custom setups have added a fifth injector to compensate for the needed fuel. I am no expert on turbo applications, so what, if anything, do you expect to gain from adding a little fuel and pulling timing with a knock sensor mod? From what I know and have read on here you are going to be asking for trouble.
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Ok first of all I am not going budget the purpose of asking is because I needed THE RETARD FUNCTION not the fuel one. For fuel I have a 5 th HKS injector controller connected to my wideband AFR and boost signal to maintain mixtures I was asking because of the advance that our Ecu automatically does when MIVEC turns on. CUrrently I am running on stock injectors turbonetics T3/T4 with Tial 38 mm wastegate and HKS BOV 2.5 " exhaust without CAT and wastegate to the atmosphere. TO control my fuel I already said I've got the HKS 5th injector and to control knocking I have a custom made water/alcohol injection kit. My current boost setting is 9 psi daily and 13 psi in the track (drag of course). I have never blown an engine and that is because I like to tune a LOT before going to the track. I wanted an extra safety 6- 12 degree retard so that I can run 16 psi on stock internals keeping it knock free.
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#9
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I don't think it would be a good idea to emulate a knock condition, especially if it involves disconnecting the knock sensor. Say you built an emulator that fakes enough knock to retard your timing 6 degrees. You turn up the boost enough to get real knock. Your knock sensor isn't hooked up anymore, so your ECU doesn't know the engine is knocking. It keeps boosting happily until *BOOM*. Welcome to your first blown engine.
You're better off slotting out the sensor as far as you can, and adding the 5th injector. Also consider increasing the size of the first four injectors. Just leave the knock sensor in the loop if you're boosting.
You're better off slotting out the sensor as far as you can, and adding the 5th injector. Also consider increasing the size of the first four injectors. Just leave the knock sensor in the loop if you're boosting.
#11
Mera pa... Enviame un email a blankito350@msn.com , tell me how to retard my lancer ra timming because is turbo @ 10psi stock internals and after a month it just start to knock my engine.... I have evo9 fuel pump and fuel rail, malpassi 1:1fuel regulator and 450 blue subaru injectors....
#12
The knock control strategy does not appear to add any fuel. Retarding the cam or crank signal causes the misfire detection to go off but you can get a few degrees out of it before causing problems. I will be able to address these problems with a reflash when we're done testing it.
-Michael
-Michael
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