| Installed a Helix Throttle Body Spacer on my lb7 about a month ago. It only lasted the weekend. Mileage went down over 2 MPG. All it was was a 1" piece of aluminum with a helix bore that inserted into the charge pipe. In my opinion it restricted the pipe and reduced air flow more than helping.
__________________ 2004 Chevy 2500HD EC Short Box w/LB7 ZF-6 speed
295/75-R16 Hankook M/Ts on aftermarket rims with 2" Lift Front and Rear
Diamond Eye 4" Turbo back. Air Box Mod. AFE Drop-In Filter. CrankitupDiesel Tie Rod Sleeves. Cognito pitman/idler braces.
Autometer Phantom II Boost & Pyro w/overhead console mount. AmsOil Severe Gear Front and Rear Diffs FUTURE UPGRADES
EFI Live w/DSP5
Cognito Upper A-arms
Clutch Upgrades And the list goes on and on |