COBB Stage 1 and Fuel Requirments

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09-25-2003, 01:19 PM

rhealeyogden

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COBB Stage 1 and Fuel Requirments

Hey all.

Just ordered the COBB Stage 1 power kit for my 03 TS, so new intake and catback, and was wondering if my fuel octane requirment changes? Or what is the recomended octance to use.

Also in the future I will upgrading the manifold [when avail.] and was wondering again do I have to look at other changes to my car, such as fuel.

New to performance upgrading, but really wanting to learn, so any tips and tricks you guys have would be greatly appreciated.

Thanks in advance.

-Ryan

09-25-2003, 01:25 PM

Kevin M

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It's not required, but it can help.

09-25-2003, 01:30 PM

rhealeyogden

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90? 91? 92? hmmm the higher the better?

or is there a certain level that just makes no sense and is a selling gimic by the gas company?

im up in canada and i think the highest is 94 from sunoco

09-26-2003, 09:57 AM

codger

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Location: Calgary

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Car Info: 2002 OBS, 1998 Volvo XC

Octane is a subject of some debate, but I've found 91 useful in the height of summer only. Maybe a bit more power, since the higher octane prevents pinging and knocking and subsequent pulling of timing.

In the winter I've run 87 or 89. 91 is unneccessary in the cold, since the engine won't be even close to pinging. There might even be more complete combustion of 87 vs 91 in the winter, hence more power.