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      07-17-2018, 11:12 PM   #1
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I used Royal Purple Max Boost, this is my butt dynos opinion

I read long ago that our ///M3s are able to adjust for about up to 96 octane, but above that is a waste (i.e. buying 100 octane from a Sunoco pump). I saw Royal Purples Max Boost and did some research on it.

Max Boost is an octane booster. You should be wary of the hokey magic octane boosters try to sell you. For example, there is a Gumout octane booster that will raise your octane a magical 0.8 digits for half the cost of this Max Boost bottle. So if you used the Gumout stuff on 93 octane in your tank you are now at 93.8.

Max Boost claims it will raise your octane 3 digits. VP Racing sells a bottle that apparently states it is not good for stock exhaust/cats, but it will raise it 8 digits.

I bought two bottles of Max Boost, one to test on the road, and the other for a upcoming track day. Pumps around my way sell 93 and I always fill it up with 93. So my thoughts are with this bottle in my tank it will be up to the 96 rating our M3 ECU's can account for.

I am not going to pretend like my car is magically faster, I added horsepower, or that I can really truly feel 3 digits of octane rating, but I feel something.

My gas pedal feels a little bit more free-er and the deceleration/rev match pops with my Borla ATAK exhaust sounds a little more zippy and crackling. No measurable horsepower or power differences that my butt dyno feels, but it does "feel" different in a positive direction.
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      07-18-2018, 05:14 AM   #2
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I think itís made with MMT, the same stuff in Torco. Could turn your plugs orange. This may not matter for most motors, but it could on one with ionic knock sending through the plugs. I think there has been some discussion here about Torco.
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      07-18-2018, 07:48 AM   #3
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Unless your engine is experiencing premature ignition (knocking) on 93 octane gas you aren't going to gain anything by using an octane booster. Higher octane does not mean higher power, and you will only see a difference if the OBD system is retarding the ignition in response to knock developing on the fuel you are using.
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      07-18-2018, 08:17 AM   #4
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I think these motors are very heat sensitive and pull timing and drop power. I suspect preignition is part of the trigger. I think they generally make a little more power on 93 than 91 but drop power even on 93 due to heat. The added octane beyond 93 might help with that. Maybe not more power under good conditions but more power under bad conditions. Consistency in power is great. But it is true that to make the most out of higher octane you need to add timing. I run water/meth with timing targets raised to 37 degrees from 32, through the NLA Vishnu Procede.

Last edited by pbonsalb; 07-18-2018 at 12:13 PM.
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      07-18-2018, 09:10 AM   #5
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There's a quite a bit gas stations in PA that sell ethanol free gas which is probably a better option than this. My butt dyno definitely felt a difference.
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      07-18-2018, 12:15 PM   #6
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There are also flex fuel kits so you run E85, which has way more octane and is oxygenated. Even with no tuning other than to scale to the E85, it adds a few percent power and limits heat related power dropoff.
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      07-18-2018, 04:14 PM   #7
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Quote:
Originally Posted by pbonsalb View Post
I think itís made with MMT, the same stuff in Torco. Could turn your plugs orange. This may not matter for most motors, but it could on one with ionic knock sending through the plugs. I think there has been some discussion here about Torco.
" Could turn your plugs orange. "

Is there any negative effect because of that?
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      07-19-2018, 07:38 AM   #8
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I added this stuff when dynoing my SC. We found no difference power wise on the dyno with 93 oct plus or without the royal purple. I only used one can in an empty tank (then fillled up)when testing, then ran the treated fuel out of the system followed by a fill up with fresh fuel then re-dyno. I did get the feeling it was "smoothing out" the powerband in the high heat we conducted the testing in (87 F), but it was probably all in my head.
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      07-20-2018, 09:20 AM   #9
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Quote:
Originally Posted by Mvy View Post
I added this stuff when dynoing my SC. We found no difference power wise on the dyno with 93 oct plus or without the royal purple. I only used one can in an empty tank (then fillled up)when testing, then ran the treated fuel out of the system followed by a fill up with fresh fuel then re-dyno. I did get the feeling it was "smoothing out" the powerband in the high heat we conducted the testing in (87 F), but it was probably all in my head.
Yeah it isn't like it gave it horsepower, it just made it easier to use the horsepower. Which matches your claim.
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      07-20-2018, 11:56 AM   #10
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To better test this approach, it would be interesting to track real-time timing on a tank of regular 93 octane and then a tank with this octane booster. I would think that one of the common scan tool options spoken about around here would allow for this sort of data logging.
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      07-20-2018, 05:12 PM   #11
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Quote:
Originally Posted by New2Roundel View Post
To better test this approach, it would be interesting to track real-time timing on a tank of regular 93 octane and then a tank with this octane booster. I would think that one of the common scan tool options spoken about around here would allow for this sort of data logging.
So your signing up for a track day and going to report right?
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      07-20-2018, 05:20 PM   #12
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Never tried the RP, but we see good results with Torco Accellerator on the dyno. It's good to have a can in the trunk as a spare, but would always prefer to run race fuel over additives.
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      07-20-2018, 11:18 PM   #13
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Quote:
Originally Posted by tom @ eas View Post
Never tried the RP, but we see good results with Torco Accellerator on the dyno. It's good to have a can in the trunk as a spare, but would always prefer to run race fuel over additives.
Completely agree, but even below race fuel all the top tier brands like Shell, Sunoco, Exxon, etc. around me are being replaced by consumer mainstream level Sheetz, Rutters, etc.

Gas has less additives and is overall less trusted on where it comes from.
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      07-21-2018, 12:01 AM   #14
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Quote:
Originally Posted by Grip Addict View Post
I read long ago that our ///M3s are able to adjust for about up to 96 octane, but above that is a waste (i.e. buying 100 octane from a Sunoco pump).

This has been floating around on the forums for many years. I've never seen much to validate it. Hopefully someone will take the time to produce some objective data such as logging timing values on 93 vs 96 on the same day in the same car. And no, I don't trust the butt dyno.

As someone else mentioned, I would not run these additives regularly unless you are in the habit of replacing plugs often.
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      07-21-2018, 12:26 AM   #15
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Quote:
Originally Posted by dparm View Post
This has been floating around on the forums for many years. I've never seen much to validate it. Hopefully someone will take the time to produce some objective data such as logging timing values on 93 vs 96 on the same day in the same car. And no, I don't trust the butt dyno.

As someone else mentioned, I would not run these additives regularly unless you are in the habit of replacing plugs often.
The butt dyno is all we have. lol

And yeah I agree to the second bit, it was a buy a bottle for trial run then for the track, I ended up not using too much gas before the track so i still have the second bottle.
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      07-21-2018, 09:17 AM   #16
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Originally Posted by Grip Addict View Post
The butt dyno is all we have. lol
On the contrary, you have real dynos that can show you, objectively, if this kind of stuff works.
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      07-21-2018, 10:22 PM   #17
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Quote:
Originally Posted by dparm View Post
On the contrary, you have real dynos that can show you, objectively, if this kind of stuff works.
butt dyno > real dyno

real dynos can provide you buyers remorse, where as butt dynos are all in your head so you can feel what you feel
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