I am looking to see what the trends and differences are on certain items that affect gas milage on our cars

So i am going to put a database together and figure out what helps and hurts etc. that we might normally overlook and how much. So what i will need from everyone of you that measures your milage is to fill out as many of these as you can:

1) Year and Type of car (N/A / Super)
2) Milage on car
3) Octane Rating used regularly
4) Type of spark plug
5) CAI (Yes/No)
6) Free-flow muffler/ exhaust (Yes/No)
7) Injector Cleaner Usage
Top Clean/Seafoam (Yes/No)
9) MPG or Miles per tank (and gallons used if known)
10) Short Description of your driving style

Thank you all, i appologise for the length of it... However, the more of you that respond the better ideas i can get and report back!

I'll bite, considering my mileage is about equal to an L67

1. 96 Aurora (NA)
2. 90 500 miles
3. 91 octane
4. Delco Platinum
5. Gutted airbox w/K&N
6. Yes....free flowing exhaust
7. Yes, 4 times a year
8. No
9. 25 mpg hghway/17 mpg city (9.1L/100km hwy, 15.8L/100km city) - 17 gallon (70L tank)
10. Brisk, aggresive

1. 97 SE (NA)
2. 161k miles
3. 90
4. OEM (pretty old i think)
5. not CAI, just a pipe w/ K&N
6. No
7. No
8. No
9. about 23-24 mpg
10. Hard acceleration when needed, usually not over 3k RPMs when driving around town, most of the miles are on the interstate.

1. 93 SSEi
2. 90K
3. 92
4. AC Delco
5. Yes, Homemade with cheapo filter
6. No
7. No
8. No
9. 18-22mpg
10. Heavy Accleration, average between 70-80 mph on highway. Mixed driving between town and highway.

1 1993 SLE N/A
2 65,200
3 87
4 AC Delco
5 no
6 yes GM high flow dual outlet (N10)
7 has been a while
8 no
9 25-27 mpg
10 I drive on mostly 4 lane roads with speeds forn 50-70 mph. On trip from NC to PA i averaged 27 mpg with a car load of stuff, alot of stuff.

1) 1995 Bonneville N/A
2) 185,800 Miles
3) 87
4) AC Delco
5) No, but soon
6) No
7) Every 3 Mos.
No
9) MPG 27 Highway, 19 City
10) Aggressive but conservative

1) 00 SSEi
2) 40,000
3) 94
4) Autolite 104 gapped at .55
5) CAI (Yes)
6) Free-flow muffler/ exhaust (Yes) (Headers)
7) Injector Cleaner Usage (None)
Top Clean/Seafoam (Yes)
9) 33HWY/17City
10) stoplight to stoplight in 3.2 seconds.

WTF?

1) 1993 SSEi
2) 103,000 miles
3) 92 octane (95 occasionally)
4) NGK V-Power TR6 plugs (.060)
5) CAI (Yes)
6) Free-flow muffler/ exhaust (Yes)
7) Injector Cleaner Usage twice a year
Top Clean/Seafoam (No)
9) MPG 29-30 hwy (cruising at 70mph) 1 mpg around town
10) Brutal around town, conservative high speed on the highway

thats what I was thinking.