Hesitation when shifting

[Fathom]

Hi everyone, I have done a search on the forum for my question but did not found what I want so here my problem:

Each time that I put my Skyline in WOT and shift to the upper gear, the car always have a small hesitation after the shift. It's seem like the turbo don't stay in full boost and took 1-2 seconds to charge again.

Does someone know what can cause the problem?? I have brand new coils, spark plugs and my MAF is in good working order. May it be just the way it has been tuned who cause this?

Thank you,
Simon.

[bobbo]

Hey Simon.
Sounds to me like maybe your waste gates might be sticking open. Which motor is it?

[Fathom]

My motor is a rb20 with a T28 turbo. I just changed my stock actuator for an adjustable one and during the installation, the wastegate seem to work as it should to me.

[nelsonmxmarc]

What BOV are you running?
Is your TPS set properly?

[Fathom]

I'm running an HSK atmospheric BOV(SSQV)

Yes, I think my TPS is set properly.

Maybe it's my BOV who drop too much pressure?

[NolaR33GTR]

I am having the same problem with my car it is almost like I hit the brakes and then the turbo catches again and takes off. I have no idea so when you find out please let me know.

[evilgtr]

this might be along shot but I remember a friend over seas with a RB20 sktline and he figured it was from his timing belt being to tight ? I dont know if that would make a difference.