still pinging! Dont know waht to do

[kwcook]

My car is still pinging at Wot. My car Has never pinged untill I got the header welded on the passenger side and the valve cover seals fixed. Could the mechanic that did the work of put something on wrong?

I just put the factory chip back in( had 93 chip). Right now I have an upgraded fuel pump, adj fuel reg. and wastegate, opened exhaust going into flowmaster mufflers, and a 4 inch cold air intake.

I have a pressure/vacuum gauge and a fuel gauge.
I need a different adapter to hook up my fuel gauge but had it on long enough to set my fuel pressure at 42-43 with the vacuum hose off.

On the vacuum side of the gauge it idles at 18-20 and stays around 10-12 when driving. The needle however never reaches the pressure side of the gauge.

Any help is appreciated I am very confused on what to do next and the car is running very weak.
Thanks
Kyle Cook

 

[cool 84]

Just a couple thoughts. Was the leak so bad that you now have more boost with it fixed?

Also, with a leak the 02 sees extra oxygen so it richens the mixture to try and compensate. If your computer is reset which I assume it is since you swapped chips, you are probably running a little leaner at WOT with the header fixed. While the computer doesn't monitor the 02s at WOT, it does lock into a certain cell in the BLMs according to the mixture just before you go to WOT. I prefer the chips that lock the BLM at 128 at WOT. It makes tuning much easier with fuel pressure adjustments.

Last, where is your vacuum/boost guage hooked into? It sounds like the throttlebody which is wrong. Maybe the mechanic hooked your fuel pressure regulator hose into the same place??

 

[kwcook]

My header was cracked pretty bad and had it fixed about a month ago. I have been very careful with the GN, trying not to blow a head gasket.
I dont remember if the boost went up, but I have been over boosting and I think it was because of a bad original wastegate which I have know replaced.
It is hooked into the throttlebody. Where is the best place to T in at, and sorry to start a new subject but wire should the gauge be connected to so the light isnt on all the time?

 

[Wagondraggin]

put a T into your vacume hose going to your map sensor thats where i put mine..

turn your boost down sounds like yo are over boosting.. check all your vacume line conections too you may have something crossed or off... how does it idle?

 

[cool 84]

Originally posted by kwcook
My header was cracked pretty bad and had it fixed about a month ago. I have been very careful with the GN, trying not to blow a head gasket.
I dont remember if the boost went up, but I have been over boosting and I think it was because of a bad original wastegate which I have know replaced.
It is hooked into the throttlebody. Where is the best place to T in at, and sorry to start a new subject but wire should the gauge be connected to so the light isnt on all the time?

T- into the MAP like was mentioned or fuel pressure regulator assuming it's run the right way. The T-body won't work because at idle it's under some vacuum and at WOT, it looses all vacuum but sees no boost.