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Old 12-13-2012, 08:42 PM   #1
xredjar
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Default Question about Stage 1 93 Tune

How much of a safety margin is in this tune? I know it may seem like a dumb question, but after reading the notes on Cobb's web page, I'm trying to decide if going with the stage 1 91 tune would be better.

The notes say its good for most 92 and 93 octane gas. It's the "most" that is the basis of my question.

I want to get rid of the couple of hiccups when wot, but want good margins of safety. I am running 93 octane gas, but I'm generally very conservative when tuning.
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Old 12-13-2012, 10:12 PM   #2
shamrocker
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It's my understanding that the Cobb stage 1 is still conservative compared to a pro tune. The best thing to do is to try the 93 map, and do some data logging to check the quality of the fuel. If there's knocking with the gas you usually buy, then try the 91 map, which gives you a little bigger margin of safety, or find another "top-tier" station. If there's no knock, just keep data logging in the future to make sure you're still getting good quality fuel.
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Old 12-14-2012, 08:57 AM   #3
Cobb Tuning
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Quote:
Originally Posted by xredjar View Post
How much of a safety margin is in this tune? I know it may seem like a dumb question, but after reading the notes on Cobb's web page, I'm trying to decide if going with the stage 1 91 tune would be better.

The notes say its good for most 92 and 93 octane gas. It's the "most" that is the basis of my question.

I want to get rid of the couple of hiccups when wot, but want good margins of safety. I am running 93 octane gas, but I'm generally very conservative when tuning.
If you want to stay on the conservative side, you can always run the most conservative map (91ACN) while still running 93 octane. This is perfectly fine, even in the long-term and will give you additional margin for knock resistance. Regardless of what map you go, data logging is always a good idea to monitor how your car responds to the map:


Bill
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Old 12-14-2012, 08:12 PM   #4
xredjar
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Thanks guys!!

I had really good results tuning my S2000 with Hondata. This is my first turbo car, and I while I want to get rid of the hicups and smooth things out....this seems a lot different than the Honda.

I'll have to do some data logging and see what the results are. The S2000 had a fair bit of knock while untuned. My tuner and I were able to get rid of almost all of it when we were finished.

Thanks again
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Old 12-18-2012, 04:20 PM   #5
cmiovino
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For the record, I'm running the 91 oct tune with 93 oct fuel. Works great, DAM stays at 16 now and very very limited knock. I highly suggest this if you are experiencing any.
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Old 01-04-2013, 06:57 PM   #6
jamesashe
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I'm in the same boat as you, I like having a safety margin so I don't have to worry as much on road trips.

Since Cobb states the difference is 5hp, there was no reason to do anything other than flash the Stage 1 91 Octane map.
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Old 01-09-2013, 01:36 AM   #7
aerosaaber
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I did the same thing, stage 1 91 octane map and I always buy 93 octane gas.
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Old 01-09-2013, 11:54 AM   #8
Tripintaz
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The Stage 1 93 octane tune from Cobb is already pretty conservative. Don't be a sissy.
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