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Originally Posted by Andrew_99GTP  I don't think so, but I could be wrong. Unless you have been running the 10% ethanol. If you have then you should see an increase in gas mileage. If I was you I would do a tune up on your car. Change things like fuel filter, air filter, plugs, wires, O2 sensor. That is if they haven't already. |
Just had a small tune up the other day. Replaced old PMK (something like that, i forgot the name) plugs with AC Declco plugs. Also cleaned the fuel injectors and intake manifold. Put a drop in K&N filter in about a month ago. Oil is good too. After the tune up, the car just runs great (it did before but now its even better). It gives a real smooth ride with a little pick up too.
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Originally Posted by IndeedSS Not sure if you will notice a change in MPG
Your PCM has a high octane spark table and a low octane spark table. When using regular gas it will use the low octane spark table to prevent knock. Many people have used regular gas on stock s/c V6's without issue. Since the low octane spark table has greatly reduced timing versus the High octane table you notice an increase in performance switching to premium. |
I didnt know that about the low/high spark. I have about 2 gallons of reg in my tank. I have a long drive tmw (about 30 miles on the high way) so im hoping to burn up whatever I have before that trip and fill it up the premium.
Thanks for all the help!
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How To: E-Brake Pwn
2001 GTP. D/S Rotors * Custom Intake * DHP PCM *