jdub34

I bought a 2006 IS 350 and it was really fast but it didn't have navigation. so then then traded up for another 2006 with navigation, but this one was much slower. i noticed it right away. it only has 20,000 miles on it and it doesn't feel like its been driven hard at all. does anyone have a idea why its doing this? it just had an oil change too. is there a setting or weird conifguration i'm not aware of. even when i flick that ect power button its still slower than the other IS 350 i had when that was in normal driving mode.

caymandive

iTrader: (2)

I'm gonna have to say it's the weather. Just curious, but when did you trade-in?

jdub34

i traded it in yesterday. so i drove both cars the same day and the first one i had was much faster by far. like a full second faster from 0 to 60!

TLe2006

reset your ECU?

jdub34

what is the ECU? and how do i do that?

caymandive

iTrader: (2)

Were you pushing your old car the same day as you got the new car? If you were out testing your 0-60 times and such on a different day, most likely it's just weather related and you have nothing to worry about. This week has been really crappy with the heat and humidity. If you still have your doubts..take it to the dyno and see what kind of numbers you can get and like others have said, resetting the ECU can't hurt. You may also want to:

1. Ensure premium fuel is in the tank
2. Air filter is clean

caymandive

iTrader: (2)

A good place to start.
https://www.clublexus.com/forums/sho...d.php?t=196853

ben_r_

Huh.... Id start wondering how well the used one you traded "up" for was taken care of..

NovaIS350

Make sure you didnt get a re-badged IS250..that would suckass

jdub34

whats a way i can deff tell that i was not re-badged? is there something distinctive on the 350 that would tell it apart from the 250 that i would be able to see?

DJ TANTRA

^^ lol, a rebadged....im pretty sure he wuda noticed it on the title!!

and yeah, as others said..reset your ECU..post progress

NovaIS350

Hey, just a thought..you never know.

T4styPh0

iTrader: (2)

Yup, just pop the hood. 350s have a silver engine cover and 250s have a gunmetal kind of color.

RocketGuy3

iTrader: (1)

You can also look at the brake calipers. The 350's are black, and the 250's are silver.

But it seems pretty unlikely that you got a 250... The suggestion that you might not be running premium fuel right now seems like a little better bet, unless you've already refilled the tank yourself.

noenoe_pro

I dont think the dealer is dare enough to give IS250 tho.. LoL well Who knows ^^'' Just check everything, maybe its ECU problem..Reset it