have you tried to reset your ecu after break in? try to reset it then drive it like you stole it and let your ecu learn your driving habits. might work!

 

LOL at 12k miles your tires are half way worn...chirping them is easier

 

Don't ruin my buzz!! I'm finally thinking my car is magically getting faster!

 

i notice something similar.

I find that i don't have the same accel all of the time. Sometimes it seems to pull much harder than others.

same tank of gas
similar weather temps (i have tried them all)
full tank of gas

for instance, it will pull slow in 2nd and 3rd, but then i go up a steap hill and accel faster than i did on the flat? I thought maybe it was my clutch slipping :S

of course if i take it to infinity, they are gonna tell me to reproduce the problem, and it will haul *** :S

I really feel that sometimes the car is really fast, and really slow other times. :S

 

hmmm...my car will spin the tires all the up the tach in second gear and chirp third, even with a passenger. it's completely stock except for springs and tanabe axel back.

 

haha, you sure its not your tires wearing out?

 

BINGO!

Thank-you for describing it so well!!!!
This is exactly what im talking about....if anyone needs another explanation.

 

how do i reset the ecu? disconnect the battery i assume?

 

6mt or auto?

 

Yup disconnect the negative battery terminal or do the peddle method if you don't want to lose your settings. I think the second method was stickied somewhere but I don't feel like searching

good luck

 

it's 6mt.

 

I don't know how well it works but I found this method online just now, if you try it let me know how it works out...

Here is a quick way to reset your ECU. It is also known to clear codes thrown, and turn off the "Service Engine Soon" Light. It's a little tricky, but works.

1. [*]
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GTHAL.... Actually I haven't ridden in at 5AT yet so its hard for me to tell, but I see what you are saying...

 

Yes, the car slower in hot temps. This motor runs very hot under the hood and will pull timing in hot temps. Ever notice your car feels quicker during the first few miles of driving? Throttle response is better in the first few miles too.

Every car I've owned gets slower in hot weather. That's why I avoid the track in the summer. You will get better ET's and higher trap speeds in the spring or fall.

I came from an '07 Mustang GT. The G just doesn't have the same low-end or mid-range torque. I knew that going in. The VQ motor is also buttery smooth. When I hammered my Mustang, vibration was felt throughout the car. The G is quiet and smooth until the last 1000 rpms of the rev range (it gets a little harsh up top). It's 330 hp. and 3600 lbs. That's 10.9-11 lbs. per horsepower. That's pretty good compared to many cars on the road.

 

Tires are stickiest at about 4/32", and new OEM tires are 11/32"