bogging and turbo chirp

[eric.davis]

When I get on it at times while its in the 2-3 shift it seems to bog down and the turbo chirps. I have and aFe pro guard 7 CAI, SCD direct solenoid and Spartans 275v4 tune. I change my oil every 5k and my fuel filters every 10k. Currently have about 3k on both the oil and fuel filters. I checked my oil level thats good. Checked my trans fluid level thats good, I did it at normal operating temps and checked it in P, R, N and D all 4 read the same. Now it wasn't at the top of the marking so I added some then drove around and re checked now it is at the top of the level indicator. Then I thought maybe I have water in my system so I opened the water separator and nothing came out after 5 minutes. This has happened on all my 275 tunes and am wondering if anyone else is having this issue at all that has a similar setup as me. And if I should start making some logs to send into Spartan.

[HoleShot08]

Sounds like it may be defueling from the heat, but the 275V4 was the fix. Are there any codes and is it doing this all the time or just when you get on it. The chirp from the turbo is something new to me.

Mike

[eric.davis]

Originally Posted by HoleShot08

Sounds like it may be defueling from the heat, but the 275V4 was the fix. Are there any codes and is it doing this all the time or just when you get on it. The chirp from the turbo is something new to me.

Mike

Right now the only time I seem to be able to imitate it is when the trans temp is under 160 degrees. And no codes have come up that I have seen on the dash. Haven't ran a DTC scan right after it does it but I will the next time. As far as the turbo chirp its just the sound when you have built boost and you let off the throttle and comes back out the turbo since there is no wastegate.

[SpartanDieselTech]

Eric, sounds as though it may be shifting/locking too early. Is this at WOT or 1/2 to 2/3 throttle? and what size tire are you running?

Edit- I see you are running 38's. This could have some effect, as lockup is earlier on the v4 tune. Shoot me an email again with your VIN and Strategy information along with a reminder and I'll see what I can do for you.

[Harley350]

Originally Posted by SpartanDieselTech

Eric, sounds as though it may be shifting/locking too early. Is this at WOT or 1/2 to 2/3 throttle? and what size tire are you running?

Edit- I see you are running 38's. This could have some effect, as lockup is earlier on the v4 tune. Shoot me an email again with your VIN and Strategy information along with a reminder and I'll see what I can do for you.

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