I haven't owned my car long enough to really tell if there is a problem with the boost in the engine. The car has no engine mods of any kind and has around 25,000 miles. When I floor it in 2nd or 3rd (or any gear) it does pick up quite a bit (the boost gauge shows the psi up to 15 and with Sport pushed 17psi) and then towards the end of the rev range 5700+ rpm there is a big kick in power. Is the boost / power delivery linear or should I expect a big kick towards the end. My butt dyno feels like the car should be faster but I've only owned the car for a month and have traveled the last few weeks so am unsure. There is no CEL apparent.

Maybe Ive just gotten use to 480hp and need more but I hope not at this point.

I've been thrown off a bit to based on that Top Gear episode where Jeremy Clarkson says the car goes from 40 - 60 in 1 second. It doesn't feel that way for me.

Should I take it to the dealership? Is there anything I can look for when it comes to loose hoses??? Any help would be appreciated.

 

If you had a boost hose go loose you'll see a drop in the boost gauge. That said, this does happen from time to time.

 

Has it had a plug change? They may be starting to break down.

 

It hasn't yet - the exact mileage is in km so I am sitting at 42,000km. When do plugs need a change?

Is there a pdf chart that illustrates the maintenance of this car?

 

Would plugs going bad cause power loss in the midrange that goes away at the high end? Seems that bad plugs would affect power more in the high end?

(my car does this too, that's why I'm asking)

 

When plugs start to break down they can cause misfires. This can seem like a sudden surge in power immediately following. My car is doing this on my third set of plugs (i obviously have another problem causing the plugs to break down).

42000km is alot out of one set of plugs. I only got half that on my first set.

 

When plugs go bad different things can happen:
If the electrodes wear, the gap increases, and you can experience misfires at idle, that will go away as RPM increases (more voltage is sent to the plugs, and the spark is able to jump the electrode gap).

If the porcelain cracks (less common, but I've had it happen), you may experience no problems at idle, but under a load, the electricity is able to arc out through tiny cracks in the porcelain, and you will get no spark at the electrodes, causing misfires under acceleration.

 

A subjective feeling in the change in characteristic of a car is often difficult to diagnose. Plug in a Durametric cable, and log the parameters that are discussed in this thread:

https://www.6speedonline.com/forums/...ic-primer.html

 

where does one purchase a durametric cable?

 

NM I got one.

 

I think the added surge in power is normal, a stock C2S does the same thing, I believe its something to do with the variable valve timing. Slightly more noticeable when not in overboost mode. My car does this even with the mods below, with new plugs.

 

I had same problem, it was pin that had popped off the pivot ball pin thingy coming from the electric actuator on the turbo. It was causing same symptons, my turbo is back now!

 

Winnilaker can you post a photo of what your talking about. I am not that mechanical to begin with and compound that with a vague reference to pivot ball thingy's and I'm even less so.

 

It's in your head.

 

Here it is, this ball is the end of a rod. It was just hanging there not on the pivot. This should move freely up and down once attached correctly. It's located on the front side of the turbo.