Jul 24, 2008 #1 A ANDREW323 New member Joined Jul 23, 2008 Messages 3 Reaction score 0 Points 1 well im doing a tune on my jeep and im changing to royal purple motor and transmission oil and installing a cold air intake and pulstar pulse plugs , will that make any difference on my jeep on gas mileage or horse power , please help
well im doing a tune on my jeep and im changing to royal purple motor and transmission oil and installing a cold air intake and pulstar pulse plugs , will that make any difference on my jeep on gas mileage or horse power , please help