• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Kr with cruise control on?

S

shanester

New member
Hi,
I have an 05 gtp with fwi,3"dp,104's,180,powerlog,3.6mps,overkill pcm. I'm showing any were from .5 to 3 kr with the cruise on at 120kmh mostly when it climbs a hill but at half or wot I show 0 kr. Is this normal?
Also with little pressure on the throttle the rpm jump around a bit (100-500) doesn't happen all the time.

Thanks Shane
 


shanester said:
Hi,
I have an 05 gtp with fwi,3"dp,104's,180,powerlog,3.6mps,overkill pcm. I'm showing any were from .5 to 3 kr with the cruise on at 120kmh mostly when it climbs a hill but at half or wot I show 0 kr. Is this normal?
Also with little pressure on the throttle the rpm jump around a bit (100-500) doesn't happen all the time.

Thanks Shane
Click to expand...


Mine does the same. Maybe its the overkill tune since I have one too.
 
Is your EGR still active? I tuned an '05 NA and kept getting part-throttle knock even with 0* of timing where the factory had 20-25*. I disabled the EGR and all that went away.
 
14-15* is the max KR. I'm talking actual timing. I took his timing table and retarded the area where he was getting all of that part-throttle KR to or close to 0* and still got KR, so I figured it wasn't true knock. When I disabled the EGR valve, I was able to restore his timing table back to where it was with no KR.

Go pull the plug on the EGR valve and take the car for a drive. Your SES light will come on for the valve, but watch your KR and see if it goes away.
 


Parker, you remember all the problems Nate and I had with his car last fall. It blew my mind that the EGR could cause THAT much KR mid-throttle.
 
after looking at it closer the kr is only showing up when the boost gauge is between -2 to 2 otherwise no kr, the car also seems to chug a bit when in this range
 


The car continues to act strange, it is hesitating in the 1000-2000 rpm range it bounces all over the place and you can feel it in the car but there is no sign of kr now, I'm thinking it has to do with the overkill pcm. its almost like it gets caught between gears
 
You must log in or register to reply here.
Back
Top