[Biturbos4] Biturbos4 Digest, Vol 37, Issue 10

[Matt Russell]

Yes, I'll second that.

Many people have been mislead to believe that more octane = more power.  
  It does NOT.
Higher octane fuel is only more resistant to detonation.  and with a  
stock chipset, 93 is fine.

-Matt, CO
92 s4

On Thursday, December 28, 2006, at 10:00  AM, Doc wrote:

> Message: 2
> Date: Thu, 28 Dec 2006 16:41:08 +0000
> From: docwyte at comcast.net
> Subject: Re: [Biturbos4] Can I run 105 octane in my stock 2001 S4?
> To: "bob rotax" <rotax017 at hotmail.com>, biturbos4 at www.audifans.com
> Message-ID:
> 	 
> <122820061641.25202.4593F3A4000C1DE20000627222070209530A9B97990C010B at co 
> mcast.net>
> 	
> Content-Type: text/plain
>
> You can run it, but it'd be a huge waste of money.  There's no reason  
> to run that kind of octane gas unless you have the programming to  
> support it.
>
> -------------- Original message --------------
> From: "bob rotax" <rotax017 at hotmail.com>
>
>>
>> Hi guys, I am a new S4 owner, maybe you can answer this for me. I have
>> searched all over Vermont and cannot find 100-octane gas. If you guys  
>> know
>> of any places please let me know. There is a place right down the  
>> road that
>> sells 105 unleaded.
>> Can I run 105 octane in my stock 2001 S4? I think it is a pre 01.5
>> because of the early style badges but I do have an esp button. I have  
>> not
>> had the chance to look at the ecu or shifter yet. I am on the East  
>> Coast and
>> have 93 readily available.
>> I am thinking of purchasing a chip soon and am starting my research. I
>> plan on getting 93/100 software. I was told I can run the 105 with  
>> chip in
>> 100 race mode. Can I run 105 stock now? Will this do anything other  
>> than
>> keep the knock sensors form activating early? Is there any  
>> significant hp
>> gain?
>> There is also 100 Avgas and 110 race fuel available locally but it is
>> leaded and I hear that this is very bad for the oxygen sensors?
>> Anyone have BTDT or experience with chips and can recommend one that
>> you feel worked well? I am leaning toward APR but am considering MTM,  
>> AWE,
>> Achtunig, etc...
>> Thanks for the help. -Bob
>>
>>
>>
>>
>> -Bob Rotax
>> 5592 RT. #7
>> Ferrisburg, Vermont
>> 05456
>> rotax017 at hotmail.com
>> www.myspace.com/rotax017
>> 802-877-6769
>> 802-922-4778