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Old 07-18-2011, 04:00 AM
Rawdodge Rawdodge is offline
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I wish I can help you with the 87 grade situation but I'm using 91 in my truck. I know a lot guys who don't care about what grade gas they use there cars/trucks but if recommended is 89 I would stick with it, unless off course you have a tuner kit then you can adjust it to whatever you want! But just to be sure you should call diablo sport and ask them about the book saying to use "premium gas only"...basically all your doing is adjusting the timing on it because now your going to be using a lower grade gas. About the whole shutting off the mds part... I'll attach a link at the bottom it will tell you exactly what to do...but it's going to make a huge difference in your gas milleage, but you be the judge...anyways I hope this helps a bit

http://www.diablosport.com/spages/su...parameters.pdf

Have fun!
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