Pinging, Pinging And More Pinging....

[Robit28]

Tuner showed that the wastegate actuator is running at 98% duty cycle so that would account for no more boost being dialled in. It's just the pinging that is annoying me at the moment. It's not a slight ping either, it's like there'e 10 guys under my bonnet hitting the engine with a hammer!

I have filled up since with BP 98 RON. I will test it next fill. Could be my fuel pump now, maybe all the fuel going to the back of the tank when I accelerate hard.

Sutty, when your car is running good, does in run well for more than one day? In other words, does temperature effect it much?

Well, I am going to change the cat, pump and install my intercooler and see how it goes.

Rob.

[gogo]

Okay - lets get one thing straight - the car can ping regardless of power level - the main variables that are likely to cause this are fuel and tune (advance). Regardless of the issues with cat and level of mods, the tuner should do their job properly and tune accordingly.

My advice is sort out the car as it stands now first unless you want to do more anyway. Valve springs will make a difference with top end performance.

I am running over 330rwkw on stock fuel system with little problems, although I am about to upgrade pump along with my next lot of mods. There should not be any issues with the movement of fuel - particularly with higher tank levels. Obviously there are variations in the performance and a fuel pump is not so expensive so if it makes you feel more comfortable...

People are running standard exhaust and cat quite successfully to 300rwkw - I do not beleive this should be a major limitation, however modifying this the same as modifying the inlet plumbing etc will allow the car to breath better, produce more power and run more efficiently.

Regardless - none of your mods or lack there of should result in the car pinging. If FIST cant get you a good tune - go somewhere else! Your car should be producing more power safely than what it is...

Good luck!

Ben.

[sutty]

  Robit28 said:

Sutty, when your car is running good, does in run well for more than one day? In other words, does temperature effect it much?

It certainly runs good for more than 1 day - when I'm not breaking something like a convertor

Even when I had the spring problem it was consistent - evidenced by the number of 12.0's at willowbank - 3 in 1 night once - with around 270rwkw's.

Now I'm not saying the cat is the cause of your current problem, but you WILL need to change it to get the end result you're seeking.

You mention that you filled up with BP98. What was in there before? If you had it tuned for 98 and filled up with normal unleaded it could mean ping city.

[RAPHOON]

  Robit28 said:

Tuner showed that the wastegate actuator is running at 98% duty cycle so that would account for no more boost being dialled in. It's just the pinging that is annoying me at the moment. It's not a slight ping either, it's like there'e 10 guys under my bonnet hitting the engine with a hammer!

I have filled up since with BP 98 RON. I will test it next fill. Could be my fuel pump now, maybe all the fuel going to the back of the tank when I accelerate hard.

Sutty, when your car is running good, does in run well for more than one day? In other words, does temperature effect it much?

Well, I am going to change the cat, pump and install my intercooler and see how it goes.

Rob.

So, have you contacted the tuner as yet?

[jetute]

  sutty said:

  Robit28 said:

Sutty, when your car is running good, does in run well for more than one day? In other words, does temperature effect it much?

You mention that you filled up with BP98. What was in there before? If you had it tuned for 98 and filled up with normal unleaded it could mean ping city.

I KNOW IF I BUY BP 98 FROM ONE PARTICULAR SERVICE STATION THE CAR AT THE TIME PINGED... EVERY OTHER BP IN MY AREA AND I DIDNT HAVE THE PROBLEM.

sorry about the caps lock..... anyway I think some servos dont sell what they advertise.

[sutty]

  gogo said:

People are running standard exhaust and cat quite successfully to 300rwkw - I do not beleive this should be a major limitation, however modifying this the same as modifying the inlet plumbing etc will allow the car to breath better, produce more power and run more efficiently.

A couple of blokes now have mentioned that "people" are running the std cat to 300rwkw's. I'm yet to see evidence of this. Where are all these "people"? I'd be particularly interested in hearing from someone who has this level of power with an AUTO.

[RAPHOON]

  sutty said:

  gogo said:

People are running standard exhaust and cat quite successfully to 300rwkw - I do not beleive this should be a major limitation, however modifying this the same as modifying the inlet plumbing etc will allow the car to breath better, produce more power and run more efficiently.

A couple of blokes now have mentioned that "people" are running the std cat to 300rwkw's. I'm yet to see evidence of this. Where are all these "people"? I'd be particularly interested in hearing from someone who has this level of power with an AUTO.

Could take a while Phil

[Xtreme F6]

  sutty said:

  gogo said:

People are running standard exhaust and cat quite successfully to 300rwkw - I do not beleive this should be a major limitation, however modifying this the same as modifying the inlet plumbing etc will allow the car to breath better, produce more power and run more efficiently.

A couple of blokes now have mentioned that "people" are running the std cat to 300rwkw's. I'm yet to see evidence of this. Where are all these "people"? I'd be particularly interested in hearing from someone who has this level of power with an AUTO.

you and me both sutty

[gogo]

The following link might be of interest...

http://www.nizpro.com.au/cobra_kits_main.html

The stage two cobra kit from Nizpro will deliver more than 300rwkw with completely stock exhaust. I am sure they have fitted a number of these kits with stock exhaust, and others like on my car with modified exhaust.

Just because most of us at this power level choose to change our exhaust does not mean that the power levels are not possible with the factory gear - just less efficient.

cheers,

Ben.

[Xtreme F6]

  gogo said:

The following link might be of interest...

http://www.nizpro.com.au/cobra_kits_main.html

The stage two cobra kit from Nizpro will deliver more than 300rwkw with completely stock exhaust.  I am sure they have fitted a number of these kits with stock exhaust, and others like on my car with modified exhaust.

Just because most of us at this power level choose to change our exhaust does not mean that the power levels are not possible with the factory gear - just less efficient.

cheers, 

Ben.

um......... bud we are talking about a car that has a cai not a nizpro kit. ive tuned 11 cars with the nizpro gear and never been able to get 300 out of an auto.