Does my tuneup need to be adjusted when going from Renegade to VP - Yellow Bullet Forums
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Old 05-31-2019, 03:34 PM   #1
Bellman
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Default Does my tuneup need to be adjusted when going from Renegade to VP

I've got my tune pretty much dialed in using Renegade 120+ race gas..

Now my supplier has changed from a Renegade dealer to a VP dealer.. So I just purchased a few cans of C16..

Will I need to change my fuel delivery to maintain the same A/F ratio ??

This is on a race only, max effort turbo setup..

Also.. Will I need to flush my fuel system of Renegade fuel, before switching to VP ??
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Old 07-04-2019, 10:26 AM   #2
mike gerlach
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Default Re: Does my tuneup need to be adjusted when going from Renegade to VP

Better read up on the VP lawsuit posted...
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Old 07-04-2019, 05:52 PM   #3
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Default Re: Does my tuneup need to be adjusted when going from Renegade to VP

Quote:
Originally Posted by mike gerlach View Post
Better read up on the VP lawsuit posted...
C16 isn't oxygenated so isn't effected by the issues in the lawsuit.
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Old 07-04-2019, 09:46 PM   #4
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Default Re: Does my tuneup need to be adjusted when going from Renegade to VP

Quote:
Originally Posted by Bellman View Post
I've got my tune pretty much dialed in using Renegade 120+ race gas..

Now my supplier has changed from a Renegade dealer to a VP dealer.. So I just purchased a few cans of C16..

Will I need to change my fuel delivery to maintain the same A/F ratio ??

This is on a race only, max effort turbo setup..

Also.. Will I need to flush my fuel system of Renegade fuel, before switching to VP ??
Haven't made that switch personally; but looking at the specs of both fuels; C16 will want to be a little richer (14.7 vs 15.0 stoich) so adding a bit of fuel certainly won't hurt. Bearing in mind boosted stuff is usually living on the richer side anyway. The C16 is a bit heavier; and has a pretty low RVP so you might find you need a little bit more ignition timing to get back to where you were on the Renegade.
JMO.
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