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Old 08-17-2005, 03:21 PM   #1
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Default INTENSE PCM & low octane gas

Maybe this has already been discussed, but I'll ask anyway.

I've got an L36 and an INTENSE PCM. Given that premium gas was $2.72/gal for me to fill up yesterday, am I okay to run mid-grade that has 89-90 octane? I can deal with a little KR if it'll save me 25 cents per gallon. What'* the concensus?
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Old 08-17-2005, 04:10 PM   #2
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still have your old PCM to switch back to?
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Old 08-17-2005, 05:20 PM   #3
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MIKE!



You're a genius!





I am an idiot. I've got my stock PCM sitting in the trunk of the dang car!


However, I would still like to know whether or not it'* okay to run 89-90 octane in an L36 with the INTENSE unit. At the worst I'll get KR, right?
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Old 08-17-2005, 06:23 PM   #4
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Did you get added timing in your PCM? Have you scanned the car? Timing is not as critical on an N/A car as it is on a boosted car.
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Old 08-17-2005, 11:11 PM   #5
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Yeah, it'* your Standard PCM with +3 degrees of timing. Scott said he thought I should stick with 91-93 octane, but I'm wondering if I'll get KR with 89-90. I've had it scanned with 92 octane in the tank and no KR. I don't have a scantool though, so if I try this I won't have any way to know if I'm getting KR or not.

Like Mike said, I may just switch back to my stock PCM while gas prices are through the roof. However, I would still like to know if it'* adviseable to run midgrade with the INTENSE Standard.

KR won't actually hurt the motor, correct? It'* keeping the motor from hurting itself, from what I understand. So if I decide to trade performance for a few degrees of KR, no harm done?
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Old 08-18-2005, 09:57 AM   #6
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Quote:
Originally Posted by big_news_1
KR won't actually hurt the motor, correct? It'* keeping the motor from hurting itself, from what I understand. So if I decide to trade performance for a few degrees of KR, no harm done?
Other than hurting performance (and thus gas mileage) it will not hurt the motor as long as the knock sensor system is working. If the knock sensors were to fail to detect the knock you would be in trouble.

If your not flooring it all the time (or doing agressive driving such as high speed merging or passing) then mid octane will be fine. Anytime you get into PE mode or WOT youll want to have higher octane in it.
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Old 08-18-2005, 12:18 PM   #7
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Thanks Todd. Always good to have a friendly neighborhood Intense employee!
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Old 08-18-2005, 02:13 PM   #8
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Got a sams club out there? get a membership and you can get 93 octane fuel for damn near less than regular. [here regular 2.79, sams premium is 2.72]
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Old 08-19-2005, 12:47 AM   #9
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the timing you will lose will drop your milage a little, but the savings on gas should make up for it.

Rockers would get rid of that KR and make it more fuel efficient...
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Old 08-22-2005, 04:35 PM   #10
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I get better gas milage with mid-grade but it could be just my car.
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