4 degrees KR, help!
Thread Starter
11 Second Club
Joined: Nov 2001
Posts: 394
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From: gilbertsville, PA
4 degrees KR, help! It's also in the internal and bolt on sections...
I wasn't running as well at Atco as I had at Maple Grove last month. Better conditions, faster track. Best of 12.64 at 112.xx w/ a 13.01 and a few other high 12's thrown in.
Just replayed my a tap files: 3-4 deg KR from 3k-6300 rpm.
Here are the variables:
Used Amoco 93 for the first time that evening.
Had ported MAF ends, they gave me KR, so I went back to stock de screened a few months ago.
Lost my rubber bumper thingy to keep the y pipe from banging the floor. This happens at the end of my burnout and sometime when upshifting.
I'm going to address the y pipe banging, but do I need a PCM reset after the MAF end swap? I've got 1-2000 miles on it since.
I wasn't running as well at Atco as I had at Maple Grove last month. Better conditions, faster track. Best of 12.64 at 112.xx w/ a 13.01 and a few other high 12's thrown in.
Just replayed my a tap files: 3-4 deg KR from 3k-6300 rpm.
Here are the variables:
Used Amoco 93 for the first time that evening.
Had ported MAF ends, they gave me KR, so I went back to stock de screened a few months ago.
Lost my rubber bumper thingy to keep the y pipe from banging the floor. This happens at the end of my burnout and sometime when upshifting.
I'm going to address the y pipe banging, but do I need a PCM reset after the MAF end swap? I've got 1-2000 miles on it since.
TECH Addict
Joined: Nov 2001
Posts: 2,207
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From: College Station, Tx
Re: 4 degrees KR, help! First thing to do is try some race gas (unleaded) and see if the KR doesn't go away. You should also check your stock O2's - if they get much below 0.800-0.850 you *may* get getting too lean.
Chris
Chris
Thread Starter
11 Second Club
Joined: Nov 2001
Posts: 394
Likes: 0
From: gilbertsville, PA
Re: 4 degrees KR, help! Yeah, I checked O2's and they are in the .910-.960 range, lterm is 0, so the car isn't sensing a lean condition. I took some serpentine belt and wound it around where it seemed to bang before. I guess we'll see.
I'm hoping to meet up w/ a new Cobra at Maple Grove next Fri night that's at 430 to the rear wheels. He didn't run much better than me w/ the KR (12.39), so we'll see.
I'm hoping to meet up w/ a new Cobra at Maple Grove next Fri night that's at 430 to the rear wheels. He didn't run much better than me w/ the KR (12.39), so we'll see.
