K20A2/Crower Cams/PRC/CTRH/BC Spec 3
K20A2/Crower Cams/PRC/CTRH/BC Spec 3
I noted a few days ago that i received over 120 knocks in 5th gear (most notably)as well as various gears. Even this morning, I got most of my knocks in 5th gear around 2500 and up in RPMS. Is this a temp change that's causing it? fuel? ignition? Any help cleaning up this calibration would be greatly appreciated since I work the weirdest hours in the world.
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- Buddy Club2a.kal
- (47.74 KiB) Downloaded 547 times
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- home.kdl
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You are nothing more...
You need to determine if this is real or false knock. This should be fairly easy to do with the naked ear while driving the car given that it happens all over the place. You might also try removing 4 degrees ignition from all cam angles in columns 7 and above to see if it has any significant impact. If it does, it is likely real knock. The ignition is hotter than stock maps, but if it was tuned correctly for your cams, it is likely correct.
If this just started, I bet one of the following things has happened:
A significant drop in octane has happened and the knock is real.
Something in the engine bay or engine itself has worked itself loose and is triggering false knock.
Given that it happens under load, my bet is that it is indeed real. An experienced ear can tell you for sure. It would be advisable to inspect your plugs for obvious signs of detonation -- it may be that you have one cylinder acting up due to an underlying physical issue such as an unreliable injector. It is also possible that you're just experiencing the full effect of winter fuel in the midwest.
If it was my car, I'd pull 4 degrees from columns 7 and above everywhere and take it out and see what my ear told me and if the log changed and go from there.
Wayne
If this just started, I bet one of the following things has happened:
A significant drop in octane has happened and the knock is real.
Something in the engine bay or engine itself has worked itself loose and is triggering false knock.
Given that it happens under load, my bet is that it is indeed real. An experienced ear can tell you for sure. It would be advisable to inspect your plugs for obvious signs of detonation -- it may be that you have one cylinder acting up due to an underlying physical issue such as an unreliable injector. It is also possible that you're just experiencing the full effect of winter fuel in the midwest.
If it was my car, I'd pull 4 degrees from columns 7 and above everywhere and take it out and see what my ear told me and if the log changed and go from there.
Wayne
2003 black RSX type-s / jrsc @ 12psi / methanol injection / aftercooled
try this see if its any better , i dont know where you live , or what fuel you run , but your car is running mad timing , lol:
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- Buddy_Club2aupdate.kal
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im basing this of course on my own experience , but your car is running way too much timing for 91 fuel. i took some timing out in a couple spots , load that map i posted , go do another datalog , try and make it like at least 20 minuts long , vary driving conditions. and get some WOT in there , 3rd gear from 2500rpm to redline buddy.
If that's the case, you probably just need less ignition in general.EvaUnit01 wrote:I can definitely do that, I know that my WOT is fine because I dont get any knocks or anything like that. It's just my part throttle that is the bad part.
2003 black RSX type-s / jrsc @ 12psi / methanol injection / aftercooled
just to update this , while he was WOT and revs were climbing , his ignition between his 50 and 40 cam maps for example was so different , his ignition was jumping up and than down and up and down as the ecu was jumping between the maps. so i evened them out , took a bunch more timing out in various areas i seen as causing the trouble. hes gonna do another datalog and well see what happens. his car runs real rich but i dont even wanna atempt to tune fuel till we get rid of all or most of this knock.
did you look at his datalog and fuel map spunkster? i think the car was running massive timing for the fuel and mods hes running.
heres his map after i evened and took some more timing out. wont let us post the datalog.
did you look at his datalog and fuel map spunkster? i think the car was running massive timing for the fuel and mods hes running.
heres his map after i evened and took some more timing out. wont let us post the datalog.
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- Buddy_Club2aupdate2.kal
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i pulled enough timing out this car shouldnt be knocking anymore. his part throttle is 80% tuned , got that much done. but i informed him to have his valvetrain and lash checked out , something has gotta to be going on. from my experience , aftermarket camshafts cause nothing but a hassle and problems.