On my sons 98.5 Auto we added a Quadzilla and adjustable Boost Elbow but are only getting 24 PSI of boost with the screw all the way in, this is being checked with the Iquad gauges. The only other mods to the engine are a intake horn, S&B cold air intake, Fleece intake Lift pump and a 4 inch exhaust with no muffler. I have not tapped the VP yet but I do have a stealth cover coming for it. Just looking for some thoughts.



Thanks

 

Hey Joey,

Yeah, 24 PSI seems kinda low with all those mods. Quick thoughts:

Double-check for leaks. They can really throw things off.
Make sure your wastegate and Boost Elbow are doing their job right.
Turbo condition matters a lot. Worth a look!
Fuel delivery could be the next thing to eye, especially since you haven't gotten to the VP tap yet.
Hope you sort it out soon. Keep us in the loop!

 

I did Tap the VP now, I have not tried it as I am doing a couple other things and probably get to try it in a couple weeks. I'll see if that changed anything. I hear the Quadzilla boost may not be the most accurate because how it reads, I would like to try a mechanical gauge.