Quick rundown: Truck HAD poor power and low boost. Checked things out and it ended up being a bad wastegate actuator. I tied the wastegate back with wire and now the truck runs as it should. But I keep getting a couple codes that flash the light and then the light goes off.

one is an over boost code but I'm not really overboosting, the most boost that I saw was 28psi. And the other code is and exhaust back pressure high code. I don't have the exact code numbers as I cleared them. Are these critical? If not how can I stop them. My brother told me to run a "boost fooler", he has one but it's on his Dodge.

The whistle I get is constant but it sounds like its coming from my air filter. Gets louder when I accelerate. It's been doing it since I aput the open filter on and before didn't bother me. Now I'm old and the whistle annoys me. Does anyone have this whistle too? How can I alleviate it

My setup is stock motor, stock turbo with RiffRaff's wheel, exhaust is 4" with an open K&N air filter pod. The tune I have is the Bully Dog tuner with stock, tow, performance and extreme settings. I run the tow setting mostly.

 

I'm surprised you're getting over 24lbs of boost. My truck would defuel when it hit 24lbs, and would drop to 12lbs of boost. A boost fooler solved that.

To eliminate the whistle, either get an S&B filter setup, or, get an A.I.S. The AIS is the best for a quiet intake, and will flow enough air with factory turbo and sticks.

 

Thanks, I'll look into those

 

OCR - Overboost Code Regulator for Ford 7.3L 99-03

Do you have a boost gauge hooked in the intake? Or are you using the MAP sensor through the computer?

 

I have both.

 

As long as the programer doesnt have the program to eliminate the overboost condition your going to get that code, best thing would be custom tunes to eliminate the SEL.

 

So what about the Exhaust back pressure code? Is that tied to the overboost code?