420A 420A Bogging out

[Reject]

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Car;
97 Eagle Talon ESI Automatic

Mods;
CAI

Symptoms;
Car has no acceleration between idle and 2,500rpm. Between 3K and 4500rpm it runs just fine. >4500rpm it has no power again. Also, I have noticed that I get a bit better response from the engine if I push the gas pedal to a 1/4 throttle or less. If I get to half throttle it is less effective than at a 1/4.

Replaced already list;

Spark Plugs
Spark Plug Wires
Coil Pack
ICM tested - Good
Coolant Temp Sensor
Thermostat
Fuel Pump
Fuel Filter
Trans flush Filter
CAI
MAP Sensor
EGR Valve
Vacuum tube all around smoked and replaced... Twice now.
Catylictic converter replaced (New)
New Exhaust Header
Front Calipers
Front Rotors
Front Pads

I am running out of ideas.... Help?

 

[Eclip97gs]

Ever figure out your issue? I have the same thing happening now 97 Eclipse GS with automatic 420a

 

[calebjying]

Ever figure out your issue? I have the same thing happening now 97 Eclipse GS with automatic 420a

I had a hole in the downpipe right next to the 02 sensor. The vehicle was tuned and had a decent size turbo, so when it got over 12 psi boost the 02 was getting a bad AFR. The 02 sensor was also bad so I replaced it.

 

[pauleyman]

Ever figure out your issue? I have the same thing happening now 97 Eclipse GS with automatic 420a

Please watch dates. The thread is 17 years old and the op also hasn't been seen in 17 years