Originally Posted by vics(evo8)

That's very funny because I'm having the same problem. Below I'll post my mod list, if your tuner figures out why it's throwing that code and the afr is acting up, let me know please i cant stand my car. In the beginning my DV (same one you have) was fluttering insanely, so much that my car would bog. I was recommended to change the spring for a stronger one. I went ahead and did that. The flutter continues, but much lighter, not even enough to affect the drivability of the car. Now, my afr is also going everywhere, and sometimes it reads that is so rich that the number won't even show up it just shows two lines and the gauge all the way to the right. Some times at cruising speeds the afr goes all the way to the red and my car kinda bogs out for a short second and again goes back to normal. I believe we might be having the same problem, and we have about the same mods and same power. Again let me know how it turns out after the tuner gets it checked.

Ams intercooler
Ams full turbo back
Ams cmc ring
Cobb intercooler piping hot/cold
Kelford cams spec-b and springs
Garret gt3071r turbo
Walbro fuel pump
Aem intake
Aem tru boost
Aem AFR
Synapse dv

At the time of the tune my car didn't have the DV so the stock one held us at 21 pounds. We did 425hp 395tq on mustang dyno. 93 oct and full power is in at 4,800rpms at about 95 degrees outside.

Originally Posted by ChrisCarey

I Beliveau that's peak torque you're looking at, where are you guys seeing boost? Lol

Originally Posted by elusiveGSR

My DV did the flutter thing also but only on my old stock turbo setup. After tune and new turbo it doesnt do it anymore. I didnt get a re-tune yet as I am in the middle of troubleshooting this problem. Im gonna put back my stock injectors and see if that eliminates the problem, if so then maybe my injectors could be the problem?? I already checked for air/exhuast leaks, and my O2 seems fine with no indication of wear & tear on the wire.

Originally Posted by [D.I.]Evolution

any updates on this turbo and driveability?

get your code issues resolved?

Originally Posted by lil ayzian

hows the mpg?

Originally Posted by Kracka

Wait, did I just log onto the Prius forum by accident?

Fuel mileage is determined by your right foot, not the turbo.

Originally Posted by 2003evo8

with the right tune you should get better mpg

Originally Posted by Kracka

Tuning will not affect closed loop operation since the ECU fuel trims always targets 14.7. A tune may lean out open loop operation, but you'll also probably be running more boost which increases fuel consumption.

Originally Posted by Kracka

Sure, timing can help too, but, for the most part MPG will go unchanged in real world conditions.

Originally Posted by razorlab

Ok I guess I live in fantasy land then.