2008 Charger Police Package

[empdtopcop]

I've got a new 2008 Dodge Charger Police car with the 5.7L HEMI. I'm getting around 12 MPG on 89 Octane. What kind of fuel mileage should I expect if I purchased a Predator and ran an 87 Octane tune? High fuel costs are killing many departments' budgets and I'm looking for a way to save some bucks in the budget. I know I should have gotten the V6 if I was concerned about fuel economy but I couldn't resist the HEMI Any thoughts?

thanks,

Jeff Pearson
Chief of Police
East Mountain PD
East Mountain, Texas

[antone302]

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[empdtopcop]

It's my police car. It's not my personal car.

[Mike_Levy]

There is no 87 tune. Theres a 91 and 93.

Sounds like you have the same issue as I do. The car sits idling alot and the gas just goes away. I do Security work and the same thing happens when its hot outside (and I need to run the A/C). My 300 SRT8 got 8.4mpg, my Grand Cherokee SRT8 is getting 8.9mpg, both on 93.

[Savage68]

I've got a new 2008 Dodge Charger Police car with the 5.7L HEMI. I'm getting around 12 MPG on 89 Octane. What kind of fuel mileage should I expect if I purchased a Predator and ran an 87 Octane tune? High fuel costs are killing many departments' budgets and I'm looking for a way to save some bucks in the budget. I know I should have gotten the V6 if I was concerned about fuel economy but I couldn't resist the HEMI Any thoughts?

thanks,

Jeff Pearson
Chief of Police
East Mountain PD
East Mountain, Texas

Just curious. Did you puchase it as a police cruiser or a stock? If you did get the police edition, what's the difference in the stock R/T 5.7 and the Police cruiser?

[BlueSunshine]

When I was on my way back from the Blue Ridge Parkway, I believe it was South Carolina that I stopped in a there was a County Sheriff with a 5.7 Charger and he said he had a Predator tune installed and it made a huge difference from the other company that was supplying the chips to law enforcement. That is what made me find out more about the Product and it's great capabilities. I do recommend a CMR Tune.

[Mike_Levy]

I saw an SRT8 Charger Highway Patrol car in NYC this weekend. Crazy shit. I knew they had the 5.7L cars, but I had no idea there were SRT8 Interceptors.

[Quick]

Isn't 12 mpg really low for a 5.7L? or do you have it floored most of the time.

[Savage68]

Isn't 12 mpg really low for a 5.7L? or do you have it floored most of the time.

Gotta be from sitting with the radar in the A/C or something along those lines. LEO's use more gas than most shipping companies...

[mikel]

I'd say that adding a proper tune will allow you to see slightly better mileage, but only while cruising at highway speeds, not much that can be done to lessen fuel consumption when idling...

Thanks

[BlueSunshine]

Just out of curiosity, could he lower the idle down when in Park or would that do more harm than good?

[mikel]

Just out of curiosity, could he lower the idle down when in Park or would that do more harm than good?

Prolly not a good idea with the extra load most police cars have, like laptops, lights, and other electronics. The alternator would likely get a bit upset if you lowered the idle.

[empdtopcop]

This car is a Police package car. It is a marked police car with the 5.7L HEMI. I don't know what the difference is between this car and the R/T. I don't drive around WOT all the time but I do need to open it up sometimes. As I'm sure many of you know, it's difficult to drive slow in these cars. They want to go fast. I recently drove it to a training course in Ft Worth and got about 19 MPG on the trip. When I'm working on the street, doing a lot of stop and go and idling. With 89 octane I'm seeing MPG of 12-14 depending on how easy I am on the throttle. What I'm really looking for is a way to run 87 octane and get the same mileage that I get when I run 89. It's cheaper to run the 89 vs. 87 because the better mileage makes up the difference in price. If I could do an economy tune and run 87 that would be nice. Any thoughts or helpful ideas would be greatly appreciated. Would a Diablo Predator be of any help to me other than to make it go faster?

[mikel]

You can use the Predator to dial in the timing for use with 87 and then log for KR to be sure all is well.

Thanks

[tuningss]

Or have someone close to you do a custom tune.