1.6* KR @95mph

[hensleyt]

My first pass no KR but spun the tires bad took a pound out of the tires, added a pound boost
new to PL and wideband. My scanmaster showed 756 wideband 11.3 at time of KR
The PL shows a nothing strange to me
third and lass pass I changed nothing forgot to push space bare to record but my scanmaster showed no KR
Those # dont look lean to me ?

 

[bogies87]

Any idea what fuel pressure and boost was. If it happened at a shift, could be false.

 

[hensleyt]

boost 26.1 I do not log fuel pressure but set at 43
95 mph long way from shift,
It has happened 8 passes back ,I had added 1* timing to 3/4 O2s was 750 mph 95 that time too,

 

[bogies87]

I am going to have to say, I can't help on this one.

 

[Razor]

My first pass no KR but spun the tires bad took a pound out of the tires, added a pound boost
new to PL and wideband. My scanmaster showed 756 wideband 11.3 at time of KR
The PL shows a nothing strange to me
third and lass pass I changed nothing forgot to push space bare to record but my scanmaster showed no KR
Those # dont look lean to me ?

Sounds like its lean to me. Fatten the car up. target 10.7:1.. O2's in the 780-790 range.

Dumb questions.. since we're dealing with knock. Whose alky kit is on the car? How old is the pump? How are you verifying your getting the proper amount of alcohol into the motor?

 

[hensleyt]

wish I had read this before I went to the track , but I did not brake anything
?1 I'm running your kit,
?2 Pump just two years old ,flushed the water out in February to start new season
?3 I don't know how to verify the amount of alcohol is getting to the motor
first pass this weekend O2 752 11.3 .9 KR
second pass turned ALKY up from 6 to 6 1/2 ,o2 788 11.1 no KR slight ET improvement + 2 mph
Next 2 passes Scanmaster showed no KR (pilot air spaced out the space bar )
last logged pass identical O2s and wide band no KR mph up +1 more mph
110.34- 112.36-113.34
Do I add fuel pressure to fatten her up or at he chip?
O2 a little lean? OK got it , car leaves line at 10.1- 10.27 WB and one second in the run jumps down to 11.s and 3 seconds in starts running flat 11.1s just after the 2/3 up shift
Wish I could post my logs maybe a friend at work can help me tomorrow
Thanks for the help ,next race Oct 12th. I have not been draining the pump between races ( one a month)some times we go on a Sunday drive

 

[3.8L V-8 eater]

I had almost the same exact KR show up at close to the same speed and AFR was identical to yours.....My problem is a bad converter slipping causing the RPM's to be to high near the top of the track...Listen to Julio I agree with him you are going lean and that AFR ratio tells me that KR is real.....