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My car just seems to have lost its upper end power. I'm coming up to my tune up which I described in a previous post, but I'm thinking there is something else causing my car to lack power. Watching the two videos I posted, do you think my cat could be getting clogged up, robbing some of my power?? Or possibly o2 sensors not giving it correct readings?...unless it runs the closed loop during WOT.

0-110
http://www.youtube.com/watch?v=zNslSl0IOkc

80-110
http://www.youtube.com/watch?v=lURyQY_-49A

It just seems...slow. I might plan on getting a high flow cat installed, but I don't want it to mess up my downstream O2 sensor, especially since I have a NGC

Wow my SXT gets to 110 faster than that lol

jesus that thing needs a turbo

Yea. Any idea why it's so slow?? It's killing me

Dont know... Its not too bad to take the cat pipe off and see if you can see through it. Might be clogged.

seems like its flat on its face up high, until the secondaries open back up.... no idea what the issue is, but that doesn't seem as fast as it should be.

I wonder if my re-flash changed some of the fuel tables under WOT. I have no way of telling though, but it was after the re-flash that my cr ran slower times at the track. After the tune-up, I'm going to go race again and post my results. I'm also going to get a copression test done to make sure everything is in good order.

Is that picture in your avatar of your car, and is it real?

the 8K rpms is not real, it is my car, and it's the test you can make the cluster do if you hold in the reset button when you turn the key to the ON position. Picture of the car on the beach is real.

One of 3 I took.

But back to the subject, I'm just going to have to wait until I get everything done to the car. Until then, I'm just going to have to wait.

holy crap i'm going to try that rpm thing. you just hold it?

Adionik wrote:holy crap i'm going to try that rpm thing. you just hold it?

offtopic-- it is to reset the cluster... you hold in the milage reset button with car off, turn to on (still holding button) and then let go once the entire dash needles bump up in sequence.

what does it reset in the cluster?

sorry not reset cluster, I mean that it resets the gauges so you can see if the speedo or rpm;s are not working, or something... I dunno its late

Back on topic, sounds like its a clogged cat to me, I had the same problem, then I gutted the cat, and then noticed a huge difference.

I might have to go to a muffler shop then and get a new cat installed. First I'm going to do everything I have planned first though.

hey man i have the same car as you 03 r/t i have a cai,and udp...my car has the same issue iv had the car for 3 years and it seems to me its goes good till around 80mph then 80 or so on up is just slow as piss...i always just assumed it was a ngc thing or just how it is tuned i have no idea....but lemme know how it runs after you do a new cat....

Just for shits and giggles

1/4mile time-15.8
1/8mile time-10.4

i think thoes are respectable numbers for my mods...

aren't cats, under federal law, warrantied by the manufacturer for life? i thought i read that somewhere...