Sluggish when warm.

[Aren Jay]

My Marauder feels sluggish when it is warm out, warm days. In the winter, it felt great, but with warmer temperatures it just doesn't seem to pull.

any thoughts?

Temperatures have been hugging the mid 80's F.

[LVMarauder]

Living in Las Vegas NV and Santa Barbara CA I can say that HEAT KILLS POWER. Around 85-90 in NV= my Maraduer is a dog, no acceleration at all until 4000+ rpm. 60 in SB with the Humidity you think I was on the bottle ( < 50 HP shot) all the time. Heat and Humidity make a significatant impact on our perfromance. All we can do is deal with it, I personally am looking forward to a ram air kit for cool air at speed. O and when its anything over 110 out in NV , i dont drive the Marauder.

[Black Dynamite]

mine seems sluggish when its warm out too. annoying for sure......

[ckadiddle]

Depends on your weather patterns I guess. I perceive mine as being perkier when the weather is cooler. ;) Definitely noticeable personality change with weather changes. Hot/humid=Blah, Cool/Dry=Fun!

[GrazniM]

Same here - not as much kick when warm out - (and on mild days not as much kick when engine is at OP temp). I do notice that adding a small amount of octane boost ...when pumping 93 oc. fuel, seems to minimize the issue. My XCAL indicates pre-ignition (ping) that I cannot detect at all when it is hot and running 93 without some additive....Can someone else check this out and verify? I figured it was particular to my engine. P.S. I also find that Lucas Octane Booster works best with the gas I usually pump; Hess.

[Marauderjack]

Several years ago Boating Magazine ran tests on 2-Cycle outboards and they found that power dropped by as much as 35% at 100* and 90% humidity.....baseline HP was established at 50* and 50% humidity!!:confused:

Warm air is much less dense (less oxygen) and adding to the problem the intake charge is HOT requiring the PCM to pull timing to avoid detonation.....all equating to less power!!:argue:

Marauderjack:burnout:

[frdwrnch]

Check your Mass Air Meter. These can loose their sensitivity without setting a code. The best way to evaluate this is to know what the "Baro" reading is for your area. It varies widely with altitude and air density. You may compare the baro reading from another vehicle to yours and see if there is a wide disparity. This problem often appears gradually so its hard to notice. An over oiled cold air filter can aggravate this condition.