Hey guys,

Just a general question;
If I run an octane higher than the required (93 octane on the 91 Performance tune) will I actually hurt my performace compared to if I ran 91 octane?

I ask because I have always ran 93 octane gas from my local BP station because I cant find 91 octane any where close by. My dad borrowed my truck and he doesnt know about the programmer, and he actually topped the tank off after he used it with 87 octane gas. He couldnt get much more than 5-6 gallons in there because I had just filled up, but I did the math and was sure that I had atleast a 91 octane mix. The truck just seemed more alive than it did before with 93 octane. Does this make sense to anyone or was it just an error in my butt dyno?

If this is the case, I will just start filling up half my tank with 89 octane and half with 93 octane.

 

Each setting has a octane requirement atached to it to aide in helping the customer stay away from detonation especially under a load when towing.

Those octane levels are the bare minimum required so moving up octane levels in those settings is perfectly fine and will not harm or reduce performance gains.

Scott

 

Rengnath, Scott is right, the octane rating is a fuel's resistance to detonation. Having a little more than you need will not hurt. http://auto.howstuffworks.com/fuel-e...question90.htm

Scott, is it possible for you all at Superchips to program into the tuner a fuel-cutoff? I ask because my wife's 08 Avenger has one from the factory. When we drove from Layton to Park City, UT about two weeks ago, and were going down hills, I had the cruise engaged and noticed my OBDuino (similar to Scangauge) was indicating 999 MPG. I have tried this in my truck, as there are several steep hills around here, but all that happens is my truck downshifts and fuel flow goes up?!

 

Thanks Ramjam, but that brings up another question...when loading a tune from SC, does it affect your tow/haul button programming?

And does anybody know what the difference is between the programming between SC tow tune, and the factory (tow/haul button) tune?

I know Scott from SC posts here, but he tends not to reply to my questions.

Thanks!

-Chris

 

Wow...thanks for the reply! Any reason youre not chiming in on the other threads?

And I always thought (increased) line pressure is what makes firmer shifts?

Thanks again!

-Chris

 

from what I understand, and I may be wrong here so please correct me if I am, the tow haul mode does not change the tune, it simply locks out 5th gear, similar to the O/D off locking out both 4th and 5th.

nateroach

 

Chris,

Please don't get the impression that I don't want to answer your questions. The fact is that in most cases I get to thread after someone else has answered the question for me.

if you prefer an answer from me directly feel free to PM me. I am always available and I get an instant email for those so I can get back to you promptly.

Scott

 

+1 what Nateroach said, the tow haul is all in the transmission. The SC Tow tune provides increased power and overall driving improvements for your towing application through inproved AFR, timing, and some trans shifting improvements.

Scott

 

Any news on the possible custom tuning updates?

 

The only thing I can offer up is that we have started up Superchips Racing and will be offering Cummins owners in the near future new power options that incorporate DPF delete and a few other tasty features. So let your Cummins buddies know what's coming.

I can't say at this point if Superchips Racing will branch into the gasoline market or not at this point being too soon to know.

If we do, I will definitely be posting that info here for those interested.

Scott