gz91rx7

OK when I accel hard in 1st gear I only hit 5 psi and max out 2nd, 3rd and 4th at about 8 or 9 psi.
I am thinking that I may have a vaccum hose leak.
I need some ideas of what to look for.
Please help I really want to get this thing fixed!

here are my current mods:

Engine Mods:

- Trust Airnix Filter
- Greddy Extreme 60mm Exhaust (dual)
- Custom 3" Turbo Inlet
- Disabled secondary throttle plates
- 3" Hi-Flo Test Pipe
- 3" Racing Beat Downpipe
- Hybrid Turbo Garrett T04B (Compressor) / Hitachi HT18 w/ ported wastegate
- Apexi dual chambered BOV
- Mild Street Port (intake and exhaust)
- Rebuilt block w/ FD corner seals and springs (4-5K miles)
- Racing Beat Engine Brace
- Magnacore 8.5mm Wires
- MSD 6A Ignition Pack (Leading Coils)
- HKS FCD
- Dual Pulley (Alternator)
- Apexi ACV-R Boost Controller

Suspension Mods:

- Suspension Techniques Front Sway Bar
- Tokiko Illumina Shocks
- Trust Upper Strut Tower Brace
- (4) 17x8 (40mm offset) Rota Stage 5 Rims
- Dayton ZR Tires
- 215-45 (front)
- 245-45 (rear)

Transmission Mods:

- C's Short Shifter
- Mazda Trix Competition Mounts (new)
- Racing Beat Lighten Steel Flywheel (new)
- OS Giken Clutch (FD Stock Clutch) (new)
- ACT Heavy Duty Pressure Plate (new)
- Redline Oil in Tranny
- SS Braided Hydraulic Clutch Line

Fuel Supplement:

- FD Fuel Pump
- (2) 720cc Injectors in Secondary
- Apexi Super AFC

FC Drifter

hmm, has it just started doing that or has it built boost like that always. it seems pretty normal to me. no turbo car makes much boost in 1st. and 8-9 psi seems about right for your mods. i think. im assuming a hi-flo test pipe is not an open midpipe. anyway one problem could be your blow off valve. ive been told they leak boost at 9 psi. i know when i swapped to a blitz aftermarket BOV my car built boost much better and held more too. just my thoughts.

gz91rx7

HUMMM I havent ever heard of the apexi bov leaking boost but I am going to try to get more info on that now.
The mid pipe is a 3" piece of pipe welded in place of my cat.
Where did you get your blitz and how much was it?
I would like to get one of those because I know that they are alot louder which is cool!
Thanks for your thoughts I appreciate the help!
Thanks,
Josh

Scott 89t2

normal. boost is made by load. no load in 1st as it goes by too fast.

Barwick

1st usually won't give full boost.. 2nd usually won't either.. 3rd usually gives full boost, 4th starts to creep, and 5th really starts to creep