I G Joe

hmm wonder if this is why my car pulls really hard sometimes and others it seems to lay back a little.

rygi23

The knock sensor thing...being that I only use 93, is that something my Diablo handheld could address? Like I G Joe, I also notice my car pulls much harder sometimes...could what you're referring to be a reason? Thx a bunch.

josh662234

i hardly drive on the hwy, avg about 12MPG on a 10 mile trip to work w/about 10 stop lights. and i love the sound of the BOV

JDraper

Diablo itself can't turn 'em off, you need someone to write you a custom tune that you can install with the Diablo. I also have a Diablosport Predator, and I had a tune written by RWTD that dialed the sensors back. I was dropping about 30 hp when the knock sensors retarded the timing. Attached is a dyno sheet I did before I had the knock sensors de-tuned. The tuner said the drop in power starting at around 5500 rpm was the knock sensors dialing back the timing. The second dyno sheet was done after I had the knock sensors dialed back. Notice there is no drop in power like in the first run. Dialing back the knock sensors also allowed us to run a little more timing, which gave me a little better power. The a/f ratio was also cleaned up with the custom tune.


Before knock sensors dialed back. This is on a modified Diablo R50D tune:


This was after the knock sensors were dialed back. This is on a RWTD custom tune: