Spyder Rev almost a stall and idle woahs

[kallador]

History so far this is a 4G64 turbo with a 16G

Before changing out anything it would idle random between 1,000 to 1,800 at running temperature. when getting to temp it would idle at 1200 - 1500

When you step on the gas rev it to 3k and let it drop down it will attempt to stall.

Changed out the IAV with a throttle body, the idle changed somewhat now it idles at running temperature around 1,500 then after a bit it will die down to 900 - 1000 then randomly move back to 1000 to 1200. But the stall is still there.

Changed out the TPS sensor and same exact problem.

Checked for any other issues such as vacuum leaks and fixed what we could find.

Changed out the o2 sensors and changed the first o2 with a WB AEM and that reads around 14.2 but goes to -- when you release the gas.

Last thing to test is the intercooler + boost leak.

https://www.youtube.com/watch?v=i3I6h6uNQwM&feature=player_detailpage

Any other suggestions to test before doing a boost leak testing?

The CEL shows P0505 after 10 - 15 minutes of driving.

 

[kallador]

As a small update, it turns out to be the ecu / injectors running stock gs ecu and 4g63 blue top injectors as the 4g64+t setup the person before hand didn't upgrade the ecu and used the blue top injectors from an 4g63 with out the resistors as the 4G64 are HIGH-Impedance injectors. A typical 4G63 turbo engine injectors are (LOW-Impedance). You can not put the low-impedance injectors in the Spyder without eventually causing damage to the ECU in which I believe the ecu is damaged now and causing a few problems.

So at least this sums it up, I have more testing to do with the ecu. but will be in the hunt for a gst 2g ecu.

 

[Kod]

Send it to ECMLink but yes it is possible and again could be still a bad boost leak...