I'm hoping this is a small problem...

[samtheman32]

Update: motor is knocking. Found two broken springs. (See page 2)

Today, I noticed extremely sluggish acceleration and a weird vibrating noise that was not coming from my tires. (this has never happened before) I noticed this today as well as an SRT8 charger that was basically stock was messing with me and pulling like a mad man on me.

My full list of mods are as follows:
TSP 231/236 cam kit
Kooks LT headers w/ hi-flow cats and 3" cat-back
Roto-fab CAI

The cam was installed and tuned at Lethal Performance in San Antonio, TX and put down 460 RWHP on 22" rims. (done this past March 2014)

I tried to get a video of it on my way home tonight and you can somewhat hear it. This is a second gear pull (WOT) in a cammed car with stock tires that I just recently put on. Usually they break loose but they didn't even budge here.



Notice around the 5500 rpm mark there is a noise and in person it is extremely noticeable and the car is shaky. That acceleration is also extremely slow. Any help is appreciated, thanks guys.

[BlackIce1066]

About the only thing that comes to mind is possible valve floating.

[BFASTNOTLAST]

Originally Posted by samtheman32

Last night I had a little empty road and I launched my car as I normally would feathering the clutch at around 3500 rpm. As soon as it grabbed I noticed extremely sluggish acceleration and a weird vibrating noise that was not coming from my tires. (this has never happened before) I noticed this today as well as an SRT8 charger that was basically stock pulled on me by like half a car from a 2nd gear roll.

My full list of mods are as follows:
TSP 231/236 cam kit
Kooks LT headers w/ hi-flow cats and 3" cat-back
Roto-fab CAI

The cam was installed and tuned at Lethal Performance in San Antonio, TX and put down 460 RWHP on 22" rims. (done this past March 2014)

I tried to get a video of it on my way home tonight and you can somewhat hear it. This is a second gear pull (WOT) in a cammed car with stock tires that I just recently put on. Usually they break loose but they didn't even budge here.



Notice around the 5500 rpm mark there is a noise and in person it is extremely noticeable and the car is shaky. That acceleration is also extremely slow. Any help is appreciated, thanks guys.

The very obvious thing I see is how slow it accelerates, by sound and looking at the speedo. Can you log some runs and see what it's telling you? What were the conditions like Ambient temp?

[samtheman32]

Originally Posted by BFASTNOTLAST

The very obvious thing I see is how slow it accelerates, by sound and looking at the speedo. Can you log some runs and see what it's telling you? What were the conditions like Ambient temp?

What do you mean log some runs? All of my temperatures were reading normal temps. Nothing seemed off and there is no CEL either.

[strych9]

What fuel are you using?

[samtheman32]

Originally Posted by strych9

What fuel are you using?

Only 93 octane.

[BFASTNOTLAST]

Originally Posted by samtheman32

What do you mean log some runs? All of my temperatures were reading normal temps. Nothing seemed off and there is no CEL either.

HP Tuners or anything that will data log.
You will learn a lot with the log or have a shop do it for you if you don't have the software.

[samtheman32]

Originally Posted by BFASTNOTLAST

HP Tuners or anything that will data log.
You will learn a lot with the log or have a shop do it for you if you don't have the software.

One of my buddies dads is going to check it out tonight. I live in a small city so taking it to a shop that knows what they're doing would be a 2 hour drive. If we can't diagnose it tonight I'm taking the trip.

I already talked to Danny @ lethal performance in San Antonio and told him my issue. He said it could be a ton of things but there's no telling over the phone so I most likely will be making the trip this week.

[samtheman32]

My buddy has the software, so hopefully we'll find out tonight.

[Rabamaro]

Originally Posted by samtheman32

My buddy has the software, so hopefully we'll find out tonight.

Keep us updated!

[samtheman32]

Checked the fuel pressure, nothing wrong with that. Checked if it was throwing codes and absolutely nothing came up. Tomorrow we're doing a compression test and other tests to see what happens.

[samtheman32]

Just did some more research. It might be that one if my HF cats is clogged. I noticed a rattle coming from under my car before I was cammed, and now I noticed it after the cam install as well. Never got it checked and I have all the systems of a clogged cat. Will update later on with what we come up with.

[samtheman32]

Went out for breakfast with my mom today and on the way back home my car was struggling to run normally. Got out of my car and what do you know.. My right cat was leaking.



Bye bye high flow cats, they will be removed tonight

[rberns]

Can't you just gut the cats instead of buying new pipes.