Hi, Guest
03-30-2009, 03:27 AM
Sorry, I replied yesterday when I was a little bit tired and so I forgot some of the details :ph34r:
Essentially when they ran the car at WOT to the rev limiter (the transmission was in "D") there was one "ping" noise heard indicating detonation just before the rev limiter shut the party down at 6,200 (repeated the run after a cool down same behaviour, ping then rev limiter shuts it down)
I've been running 91 octane gas from Shell for three months straight so the chances that the octane was too low in the tank are frankly nil IMO.
They advised me to advance the timing by IIRC three degrees between the 4k to 8k band and enrichen the A/F by IIRC two percent to deal with this. I reprogrammed the ECU again with these changes but I've been unable to test them under the same conditions.
Here's the dyno graph attached (I think the numbers are a tad low because the car is an auto and doesn't want to hold a specific gear)
![[Image: davedynorun.jpg]](http://i94.photobucket.com/albums/l100/NefCanuck/The%20Fusionator/davedynorun.jpg)
NefCanuck
Essentially when they ran the car at WOT to the rev limiter (the transmission was in "D") there was one "ping" noise heard indicating detonation just before the rev limiter shut the party down at 6,200 (repeated the run after a cool down same behaviour, ping then rev limiter shuts it down)
I've been running 91 octane gas from Shell for three months straight so the chances that the octane was too low in the tank are frankly nil IMO.
They advised me to advance the timing by IIRC three degrees between the 4k to 8k band and enrichen the A/F by IIRC two percent to deal with this. I reprogrammed the ECU again with these changes but I've been unable to test them under the same conditions.
Here's the dyno graph attached (I think the numbers are a tad low because the car is an auto and doesn't want to hold a specific gear)
NefCanuck