SRT-4 vs. Mazdaspeed 3

[Member31410]

I liked the power my SRT had, I made ungodly amounts of TQ, but the trade off is how much do you like 17-19mpg? Maybe if mopar would've come out with a kit to catch all the unburnt gas coming outta the tail, then I might have kept it. I kinda like the MS3, but I still woulnd't buy that either. I'm kinda outta my boy racer stage.....

The worst recorded tank of gas on my car was 21 mpg. The best was 33.2 mpg. I average 24-26 mpg driving around and on highways, I average 29-31 mpg. This is on a Mopar Stage 3 car untuned that has hit an 11.9 at the drag strip and has trapped up to 120 mph. This is also with no weight reduction on the car.

[Turbo04]

The worst recorded tank of gas on my car was 21 mpg. The best was 33.2 mpg. I average 24-26 mpg driving around and on highways, I average 29-31 mpg. This is on a Mopar Stage 3 car untuned that has hit an 11.9 at the drag strip and has trapped up to 120 mph. This is also with no weight reduction on the car.

Whats the city only milege? I'm tooling around now average 32 in the city only, 40+ on the interstate with the mini. Not always going easy on her either. Untuned stage 3 car isn't quite right a description, if it's just a stg 3 kit, it's got the factory tune already on the PCM, which the also tuned for a decent gas milege. Also was that milege you said using the dial-a-boost?

[Member31410]

Whats the city only milege? I'm tooling around now average 32 in the city only, 40+ on the interstate with the mini. Not always going easy on her either. Untuned stage 3 car isn't quite right a description, if it's just a stg 3 kit, it's got the factory tune already on the PCM, which the also tuned for a decent gas milege. Also was that milege you said using the dial-a-boost?

In my case, there isn't a thing such as city only milage. My work commute takes around 25 miles one way from one county to another. I use Hwy 316 to and from work. If you are not familiar with that highway, it is loaded with traffic lights and traffic is bad during the day. At night though, it is smooth sailing for me.

As for the DAB (Dial-A-Boost) settings, from what I have experimented in my car, I get the same fuel economy regardless of the setting while driving around town so I have it set to almost always at DAB 3. On road trips though, I have noticed up to two more miles per gallon while on DAB 0 but who knows, maybe it might be because I'm easier on the throttle since I know I'm on lower boost. BTW the DAB feature only affects boost during wide open throttle. The 33.2 mpg best that I recorded was on DAB 0.

As you have said, my car is sending out "unburnt gas outta the tail" too. All the Mopar stage kits are set pig rich from the factory including the stage 3 kits. My AFR goes off the chart everytime I dyno. Yeah I could get a piggy back and tune the car for more power and get better fuel economy but I'm totally fine with the S3 kit as is.