89 Tune?

[NCGrimbo]

Is there a tune for 89 octane with a cai? I tried searching for 89 tune and couldn't see anything, so I thought I would just ask.

Thanks,
NCGrimbo

[mikel]

No, use the 87 tune (and save a few cents and run the 87 octane fuel too)

[sssalah]

No, use the 87 tune (and save a few cents and run the 87 octane fuel too)

Where can this 87 tune be had? I have a knock (about 10° knock retartd) at part throtle even with the best fuel I can get where I live.

[06MonteSS]

there is no 87 octane tune for the 300 SRT-8... since you should be running at least 91 octane in that anyway...

you only have the options for a 91 octane tune, or a 93 octane tune...

[concoursd]

No, use the 87 tune (and save a few cents and run the 87 octane fuel too)

Where can this 87 tune be had? I have a knock (about 10° knock retartd) at part throtle even with the best fuel I can get where I live.

I would check for oil build-up in your intake manifold as this is the primary and most common cause of spark knock with the hemi engines. If there is buildup/puddle of oil then clean it up and get catch can to catch the oil before it gets sucked into the manifold.

[beam3215]

I run 89 exclusively w/ ACES IV fuel additive (it is NOT an octane boost...it IS a fuel catalyst), and got a custom tune for 89 octane......runs like high octane. Well worth the effort.