It was about 71 deg. My first run I was getting detonation on WOT. After that first run I added 5 gals. of 100 octane Racing fuel to about a 1/4 tank of 93 octane. My next 3 runs had no detonation. DUring the hot months of summer here in FL I had no detonation. Is this normal? Should I have my single chip reprogrammed with less advanced timing? SHould I go with a flip chip instead? Do many of you add 100 octane Racing when you race? I know, lots of questions.

I have 6lb lower pulley, TR-6 plugs, Diablosport chip.

 

In hot weather your PCM pulls out timing

In cool weather is doesnt cause the IAT is lower

You might want a flip chip with hot weather side and cool weather side..

On a side note my bet is we will see dome more sparkplug and engine damage this winter from folks running aggressive summer tunes and big pullies..

Doug

 

Anyone else with some suggestions. Thanks!

 

When I run my warm weather program in temps below mid 60's then I add $5 of 104 unleaded at the track. I usually run a 1/4 tank or a little below so it should kick it up to about 95 octane for added insurance. I didn't have any problems last spring doing this.