jakartatomcat

I need some help in determining why I hit 10 on my knock sum tonight.
My car is a '13 GSR with only mod being a K&N panel filter. The map I'm using is: Stage1 93 LWG v403 with the K&N Panel MAF Scaling numbers from the excel file.

I was using the normal wastegate map a couple of weeks ago and hit 8 knocks at one point so decided to switch to the LWG. Please review attached datalog.

Please let me know if anyone needs any more info about my car's situation.
Thanks

jrmck

I can't answer your question... But I can tell you the KnN filter is oiled and will **** your MAF sensor eventually. Get a dry filter. Cobb, HKS are the two I've used

jakartatomcat

I'm going to switch out to the OEM Panel Filter for now and do some logging.

Please someone from COBB take a look at my log and tell me what you think!

COBB Tuning

You should not be knocking that much at part throttle low rpm, it seems to happen at the same RPM range, and different load/rpm/timing values. I would switch to a Stage0 map and see if the problem persists. Are you getting any codes?
-Chris

jakartatomcat

Thanks for the response Chris.

I switched to Stage 0 yesterday and ran a few logs. I'm still getting high knock count.
I'm not getting any codes.


https://dl.dropboxusercontent.com/u/...k%20count).csv Max count 7 log

https://dl.dropboxusercontent.com/u/...k%20count).csvMax count 6 log

https://dl.dropboxusercontent.com/u/...k%20count).csvMax count 5 log

jakartatomcat

Just got this log tonight and saw a random spike on the knock count to 8.
Still using Stage0 map.


https://dl.dropboxusercontent.com/u/...k%20count).csv

COBB Tuning

Since it is happening on a Stage0/Stock and Stage 1 maps I would lean toward something mechanically wrong with the car. Go through the basics, check the spark plugs, spark plug gap and the spark plug insulators. Make sure the vacuum hose is connected between the FPR and your intake manifold. Replace your fuel pump relay if its not been already with a blue unit Details here. Do you have any clutch chatter, throwout bearing, or any other drivetrain noises in the low RPM that could cause false knock? Is your BPV hitting the strut tower brace and vibrating? etc.

-Chris

jakartatomcat

I'm currently in the process of checking these items:

- Checking spark plug gap and insulators this weekend

- The FPR vacuum hose has never come off but I'll put a zip tie around it anyways



- Fuel pump relay was replaced in Feb with this one:
http://www.ebay.com/itm/OMRON-RELAY-MR122409-OEM-/310983111717?hash=item486809b425&vxp=mtr
- As far as clutch chatter, throwout bearing and drivetrain noises I'm not really sure. Only drivetrain noise I hear are when backing up and shifting from reverse to 1st, but I think thats normal.

- The BPV is not hitting the strut tower brace.



I will update this weekend once I check my spark plugs. I will install a new set of the OEM NGK plugs.

hondaconvert

Get a wideband. I had a new Omron relay go bad after less than 2500 miles...

jakartatomcat

How did your Omron relay go bad? Which one did you get?

jakartatomcat

So on Tuesday I took my car to the shop (can't work on my car at my apt. complex because they are "upscale") and they said the spark plugs are fine. Gap and insulators look good and they are not dirty. I was not able to replace them with new one because they didn't have them in stock.

So I've been driving around with Stage0 map and still get 6-8 knock counts randomly at low RPM/Load.

At this point I'm not sure if I should just ignore the knocks because is normal for these cars to do this or if I should keep looking into it?

I have to replace the front rotors and buy brake pads all around now so I will be concentrating on that for the time being.

COBB/Chris let me know what you think...

Thanks

tscompusa

iTrader: (31)

anything that hits metal on metal will cause false knock.

are you sure that bov is not able to hit that strut? check the strut for marks.

check the FMIC and piping etc.

anything you find that is metal on metal contact that you can wiggle you need to pad it with 3m foam or something of that nature.

If you want 100% reassurance also nothing funky is going on fuel wise fill the car up with some really high octane gas.

when you rev it just parked does it knock a ton? check your exhaust area also.

jakartatomcat

The BOV doesn't seem to be hitting the strut bar, there's no marks on it (see pic above also).

Checked the IC pipes where metal is exposed and didn't see any metal on metal contact.

When I rev my car while parked it does record knock counts. I got 8 and 15 max knock count when revving to 3-4k rpm.

I have been driving around with the Stage0 map for about 7 days now and I get random spikes of 5-8 (8 has been the max so far). They definitely don't happen at high load/RPM I know that for sure now. It has to be something rattling around.

I haven't checked my exhaust area yet. I'm going to change my front rotors and pads for all wheels this 4th of july weekend and will check the exhaust pipes.

Will update soon, thanks for the input.

hondaconvert

I have no idea how the relay went bad, I just know that my tuner said it was bad and that replacing it fixed the problem. It was whatever black Omron relay that I got when I bought it from SSP.

bellacotim

The vaunted FP relay, while generally a good idea to replace every year, is not a factor here as you're in part throttle. It only gets called to switch on at high load since its purpose is to bypassing the fuel pump resistor thus transition driving the fuel pump from normal rate (low voltage) to full rate (high voltage).

The knocksum you're seeing is typical with standing start tip in. Funny though that v403 Stg1 91 should have disabled knock detection at such low load (< 85) given those RPM ranges. Check that your current Knock Sensitivity Load Threshold reads like this:

85 85 85 85 85 85 85 90 90 90 90 90 90 90 90 90

Having said this, it's generally accepted that knock logged right at normal standing start can be ignored.