Is my MPG better then average?

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Author Message   David Morin (Sporin) Member Username: Sporin Post Number: 124 Registered: 02-2003 Posted on Tuesday, January 13, 2004 - 09:18 am:    Through all my research, I was expecting around 13mpg on average from my '88 RRC (3.5 EFI). Turns out, I'm getting around 15 mpg and over 17 on long highway trips. Engine is stock with a big NRP exhaust, I run 205/R16 Coopers right now. Am I crazy or is that better then expected?   Darren Ohara (Ronin) New Member Username: Ronin Post Number: 3 Registered: 12-2003 Posted on Tuesday, January 13, 2004 - 09:54 am:    That is what I got with my '89 and sometimes with my '93 LWB. Now with the 235/85 tires on the LWB I am getting around 13 city and 15 highway, but I am wondering if that is more due to speedo error than lower mileage. According to my GPS, the speedo is around 3.5 mph slow.   David Hobbs (Ca_surveyor) Member Username: Ca_surveyor Post Number: 47 Registered: 11-2002 Posted on Tuesday, January 13, 2004 - 06:55 pm:    David, How do you like the NRP exhaust. I have an 88RRC with 265/75. My odometer is not accurate due to larger tires and gear change. I estimate about 12-13 mpg over several years.   Tim '92 RR (Snowman) Senior Member Username: Snowman Post Number: 643 Registered: 12-2002 Posted on Tuesday, January 13, 2004 - 07:53 pm:    David- My '92 RRC gets 17 mpg on the highway if I am real easy on the gas. I would guess my overall around town driving turns in about 13-14 mpg. The engine is still the 3.9 and the exhaust is stock. Tim H. VT   David Morin (Sporin) Member Username: Sporin Post Number: 127 Registered: 02-2003 Posted on Wednesday, January 14, 2004 - 08:22 am:    The NRP is sweet, has a very throaty rumble It was put on my the PO. I've just purchased some 245/75-16's for summer use and I imagine those will hurt MPG a bit. So I guess my MPG isn't abnormal, but it certainly is better then I was prepared for. Cool.   Geoff 93 RRC (Geoff) Member Username: Geoff Post Number: 202 Registered: 11-2002 Posted on Wednesday, January 14, 2004 - 09:12 pm:    I get 15 in mixed driving. '93 3.9 L SWB. Used to get 13. I used Lucas fuel injector cleaner for 3 tanks. Don't know if it cleaned out the fuel system or unstuck a valve.   Ian Bentley (Ibentley) Member Username: Ibentley Post Number: 50 Registered: 06-2003 Posted on Friday, January 16, 2004 - 04:20 pm:    I get about the same as you in my '87. I got a high of about 19 highway right after new plugs, wires, air filter, etc. That's with stock exhaust and tires.