Thread: Knock Retard when accelerating

Try gradually rolling through the throttle, or more slowly. Its harder to pinpoint anything when its just a couple blips or jumps of KR. I'll look at it more later...

As requested, here's a new one with a more gradual climb:
AccelGrad2410 from xxrzdxx -- Scan Depot dot net

Something that I have noticed in all my scans is that at the suggested PE enable point at around 100kpa on the MAP, I always hit this mark at only 20% throttle. While everyone else I've noticed seems to be more in the 30% percent range. With stock being around 40-45% throttle.

I do know that my LIM is leaking some oil where one of the larger gasket portions meets one of the small, rail type portion of the gasket. I don't think the dab of sealant at that point was applied right, when they were replaced. This is the meeting point near the 6th cylinder. I cannot detect any vacuum leaks, and is only leaking oil to my knowledge. Wanted to throw that in there in case there's a possibility it is related.

I do plan on running a fuel injector and then air intake cleaner through the top end this weekend, with the pressurized canister tool.

Do you have the powrtuner or who is tuning it, what programs are you using for tuning? I don't see any 02's get past 900 on the narrowband in that scan but your also not entering PE that much. You must have PE afr at 11.5 or so? I would try adding 10% on the maf table from 6000 on up and smooth that out. Wait til the fuel trims settle back down and then post a scan again. See if a larger change in the fueling will alter the kr any. What is your PE enable tps at? Here is what mine is set at, but you can probably go a tad higher since your s/c.


Fuel -> PE -> PE Enable TPS
File Location: C:\Documents and Settings\Administrator\Desktop\BINS\2kturboE85roun d6.bin

Percent
RPM 0 40
400 40
800 40
1200 35
1600 35
2000 31.99219
2400 30
2800 25
3200 20
3600 20
4000 20
4400 20
4800 20
5200 20
5600 20
6000 20
6400 20

Did you try adding 10% to the maf table at 6000 and up? I would also play with the AE table to see if it will do anything. Your narrowband readings could make it look like its just fine, but it is not very accurate.