Hey all! Got my RS today, and from the 40 or so miles I put on it already, I swear it's gotten a tad more peppy... It's prob. my mind, I'm guessing not too much happens within 40 miles in terms of rings seating etc...

anyway, just wondering if anyone's noticed if their 2.5L got any quicker towards the end of break in?

 

nice!

the car's got around 50 miles on it, and it's a blast already.

Not having to go past 3.5k rpm to get moderate acceleration is just a new concept with me I guess

I'm defintely getting the oil changed at 1,000 miles just to be on the safe side...

 

Actually, the car is probably a little faster now than when you rolled it off the lot. That's just the nature of the ECU. It mau get a little quicker, but it has probably already made most of the gains it is going to.

 

ok, so at least I know it's not all in my mind. But yah, seems like it's leveled off today.

So the ecu cuts back power in the first 100 miles or so for break-in?...

 

Not exactly, it learns how you drive and takes everything into consideration like air temp and air density and optimizes the fuel maps for the most power and of course your driving style. I've heard that after driving a Suby for a while the cars do in fact produce more power, but if you disconnect power to the computer it will reset and have to learn all over again. I'm not sure you can feel the difference, but you may notice a small difference in mpg and the numbers should be noticeable on a dyno.

as a sidenote; I'm told these ECU's are quite extraordinary. One of my friends is building a small plane and he said he was going to use a Suby engine that would be fitted with a supercharger and redundant systems. The cool thing is he's going to use the OE ECU and he said it is capable of supporting various functions for this task including controlling prop pitch. I know this is off the subject , but I thought it was cool.

 

i second that- just wait till you get 20,000 mi. !!
If you want even a better ecu try getting a jdm version. japan is funny that way. they keep the best and trash the rest. even as good as the u.s. spec ecu is awesome. . . just imagine the jdm

 

ok, I bought my car used and am unsure how the previous owner drove it but from what i do know it was much less, um, "spirited." Not to try to steal the thread but the question popped in to my head, would I benefit by reseting my ECU so it can learn and adapt to MY driving?