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Old Jan-08-17, 10:57 AM   #1
 
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Question Octane Booster good or bad idea???

Sorry if this issue has been addressed already but a search of the subject turned up nothing for me.


As I live in California, the gasoline here is 91 octane instead of 93.

Thinking how the 6.0 engine of my TBSS was intended for premium fuel (probably of the 93 rating) I decided to try adding the following octane booster (one full can per tank full) to my fill ups and see what happens.

I noticed a slight increase in mileage (I think) but I am wondering if I might be doing damage to the Catalytic Converter or some other smog-related component. I HAVE had my engine performance tuned (dyno method) by Cunningham Motorsports and have a CAI installed, otherwise my engine is stock.

Questions:
1) Are California TBSS engines any different from those sold elsewhere?
2) Am I helping or harming my engine? or just wasting money?
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Old Jan-08-17, 11:41 AM   #2
 
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Cunningham tuned your truck for the gasoline it had in the tank. So if it had 91 at the time you're just wasting money. Unless you are logging your engine and seeing a lot of knock retard then it could help, but you should have the tune looked at. Knock retard can also be caused by engine deposits. Overall, you should use the octane the engine is tuned for.
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Old Jan-08-17, 11:53 AM   #3

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Wasting money.
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Old Jan-08-17, 12:03 PM   #4
 
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ahh, that makes perfect sense, thank you. That's good news since I wasn't looking forward to purchasing cases of Octane boost for marginal results.

May I bother you for a small follow up question?

What type spark plugs are the hottest thing today? (for a mild-tuned SS in CA)
Given their lifespan of 50,000k or more, cost is really irrelevant.

Was considering these:
https://www.amazon.com/NGK-Laser-Iri...%3Atrailblazer

I'd likely replace the plug wires too as a preventative measure, but anything else?

thanks in advance.

Last edited by MadMax; Jan-08-17 at 12:06 PM.
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Old Jan-08-17, 12:58 PM   #5
 
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NGK TR6 Up to you if you want the iridium equivalent. There's a sticky post in the mods section if you searched.
NGK Spark plug info
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Old Jan-08-17, 01:11 PM   #6

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I don't know what additive you used but boost additives play the word game with their advertising. If they claim it will boost your octane 1 point, that just means you're going from 91 octane to 91.1 octane. Not 91 to 92. It takes a 10 point increase to raise 1 octane and most boosters aren't getting you that. Torco and a few others are the exception but they also have their drawbacks. If you are tuned correctly for 91, running more than 91 generally wont add power. Save your money for other power mods.
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Old Jan-08-17, 01:16 PM   #7
 
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Quote:
Originally Posted by db-guru View Post
NGK TR6 Up to you if you want the iridium equivalent. There's a sticky post in the mods section if you searched.
NGK Spark plug info
Yea, was going to post a revision but you beat me to it.
that subject was much easier to research and find my answer

as you said, NKG TR6 (iridium optional)

I see alot of interest in the PCM plug wires too
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Old Jan-08-17, 01:20 PM   #8
 
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Quote:
Originally Posted by k0bun View Post
I don't know what additive you used but boost additives play the word game with their advertising. If they claim it will boost your octane 1 point, that just means you're going from 91 octane to 91.1 octane. Not 91 to 92. It takes a 10 point increase to raise 1 octane and most boosters aren't getting you that. Torco and a few others are the exception but they also have their drawbacks. If you are tuned correctly for 91, running more than 91 generally wont add power. Save your money for other power mods.
thanks, that is what I thought and glad I asked.
the Royal Purple is a very popular brand so hopefully their product is better than usual, but as pointed out, the engine was tuned at 91. so no benefit
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Old Jan-08-17, 06:03 PM   #9

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Quote:
Originally Posted by MadMax View Post

I see alot of interest in the PCM plug wires too
Taylor are the best wires for the money IMO


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Old Jan-08-17, 07:27 PM   #10
 
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Quote:
Originally Posted by Bushwacker View Post
Taylor are the best wires for the money IMO


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I second this and keep a set in the garage, just in case.
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Old Jan-08-17, 08:06 PM   #11
 
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I have had good success with Torco on a boosted LS2 in our TBSS.

You should look into meth or propane injection to come on under load.
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Old Jan-09-17, 12:28 PM   #12

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I am running TR6s and PCM wires on my truck and absolutely love them. Just hit about 25--30k miles and ordered new plugs and will be getting wires along with new O2 sensors here before long
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Old Jan-09-17, 03:24 PM   #13

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There's nothing wrong with OEM wires. You don't need to spend $100+ on spark plug wires. The stock wires can handle way more than what you have.

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Old Jan-11-17, 02:51 PM   #14
 
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Quote:
Originally Posted by k0bun View Post
There's nothing wrong with OEM wires. You don't need to spend $100+ on spark plug wires. The stock wires can handle way more than what you have.

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True. But they lack the angle needed to kick them away from headers which the Taylor's and many other after markets offer in an array of angles with less resistance.
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Old Jan-11-17, 04:23 PM   #15

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True. But they lack the angle needed to kick them away from headers which the Taylor's and many other after markets offer in an array of angles with less resistance.
I'd have to go take a look at my truck but I believe I only had 2 or 3 wires that were closer than I felt comfortable with to my 1 7/8" Kooks. I just installed a set of eBay heat socks and all has been good for several years.

There's nothing wrong with aftermarket wires. I just couldn't justify $100+ for something that I felt wasn't needed and offers virtually no performance benefit. Some do look good though and I suppose that is a valid reason as well.
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Old Jan-11-17, 04:48 PM   #16
 
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Yeah, I ended up cooking through two stockers with my Kooks. I wasn't having that anymore so I paired Taylor's with their boots and ran them since.
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Old Jan-11-17, 08:32 PM   #17
 
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Quote:
Originally Posted by motorhead View Post
I have had good success with Torco on a boosted LS2 in our TBSS.

You should look into meth or propane injection to come on under load.
The reason I haven't taken my engine any further is I know the LS2 can handle the additional stress but the drive train (from what I understand) cannot.
Cost-Benefit then comes to mind, and getting over a $3k bump in the road (new trans, etc.) before even beginning to consider additional horsies is a most frustrating setback to say the least.

btw, came across these wires while looking into the Taylors. still expensive but seem quite nice.

https://www.amazon.com/gp/product/B0...A3113MCLM37OSI

oh and from a business standpoint, one should (I think) look at incremental cost, not total cost.
Great wires are merely another $40 higher than sufficient wires - just saying
(then again, I'm one of those kooks who will use a 4x4 post where a 2x4 stud suffices, so....) :-)


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Old Jan-12-17, 08:35 AM   #18

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I have that set of 10mm titanium I bought from them a few years ago when I saw them but I haven't had any problems out of my Taylors so I haven't tried them I don't know if they're better than the Taylors they look good but I think for half price I'd recommend the Taylors over the ABC titanium wires. On my next tune up I'll replace the wires and see how they do I hope they last as long as my Taylors have.

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Old Jan-12-17, 09:18 AM   #19
 
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Hey, I know this is a very open-ended question, but....

what do YOU guys replace at tune-up time besides plugs and possibly plug wires???

I'm old enough to remember the days of replacing points and condenser (sigh)

My 2008 TBSS has only 55k miles on it (yes, air filter has been recently cleaned)
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Old Jan-12-17, 12:52 PM   #20
 
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As far as a basic tune up. Plugs and wires are it. Fuel filter sock is in tank. Air filter you did and pcv is part of the valve cover. Maybe a belt if it's due.
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