Full throttle boost problem

[beatd]

Hey guys i'm having problems with my car again but this time its boosting problems. I finally took care of my other problems and wanted to beat the crap out of this car for the first time with the new t28 and stock wastegate set at 6 psi.

However ever time i tried to full throttle the car it would not hit boost in 1st or 2nd gear and barely hit boost in 3rd gear and would cut out early like 3.7 rpm. However if i did half throttle it would boost from 2.7 rpm until around 5.8 rpm on all gears fine.

I mean theres so much more pull during half throttle than full throttle. You guys think its a boost leak? spark issue? tune?

[DevilMB3017]

Sounds kind of like a boost leak or vacuum problem.

I'd double check all your hoses/couplers/clamps.

Do you have a wideband O2 sensor? It should reflect a boost leak.Have a boost/vacuum gauge? It should reflect a vacuum problem.

Also check your plug gap... it's pretty simple to do. What plugs are running also?

[480sx]

^^ Exactly

[beatd]

Sounds kind of like a boost leak or vacuum problem.

I'd double check all your hoses/couplers/clamps.

Do you have a wideband O2 sensor? It should reflect a boost leak.Have a boost/vacuum gauge? It should reflect a vacuum problem.

Also check your plug gap... it's pretty simple to do. What plugs are running also?

I have a wideband and it was around high 10s afr when i went full throttle.I have a boost/vacuum gauge and it didn't boost so it stayed at 0 at full throttle.I have ngk brk7es plugs with the gap left from the box. what should the gap be for stock ignition system and T28 turbo?

[WDRacing]

Try .030