Problem with boost on kenne bell 2.3

[NZBling]

Truck runs great. 2.3 kenne bell on 99 lightning. Very safe tune made 486rwhp 550 tq. Bad throttle response, hesitates then hauls ass. While cruisin at part throttle around 5ibs vaccum or 0, not pushin throttle anymore my boost jumps 4 lbs. whats wrong? Any ideas will help. Thanks.

 

[01yellercobra]

Sounds like the tune wasn't finished. Did this just start or has it been happening all along?

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[NZBling]

Started gradually. My first thought was a vac leak. But i have checked all hoses and connections. Her is list of all mods. Boost bypass, oil seperator, 60 lb injecters, 90 mm mass air, electric fan, 4 lb lower , 2.3 polished kenne bell with polished johnny lightning sheetmetal intake.2600 stall converter, my programmer shows no codes. I was thinkin also the green coupler gear in kenne was deformed or something. But checked and replaced. Still havin issue. Thank you for you time.

 

[NZBling]

Also thought of swappin stock blower back on to see if prob goes away. Maybe the kenne is jacked up?

 

[01yellercobra]

A vacuum leak could cause the issues you're seeing. Did you check the bypass valve to make sure the diaphragm is still in good shape?

 

[Kenne Bell]

Do you have larger cams in the truck? Also how did you check for a Vacuum leak, did you smoke test it?

 

[NZBling]

Stock cam. And did nt smoke test it. Dnt know how to do that,

 

[NZBling]

Changed tps sensor. Still have problems. Boost jumpin up and throttle response sucks. Truck has alot of milea on it. Thinkin of doin compression test. Dnt think thats bad but worth a shot. And anyone think trans can be wore
Out enough to have these problems? Thanks