Long night at Backyard Turbo, Boomba Fuel Rail Installation

[KronosPerformance]

Last night we took the WRX to Backyard Turbo to do a few things.

- Boomba Racing Fuel Rail Installation
- TGV Delete
- Throttle Body Coolant Bypass
- Grimmspeed Phenolic Spacers (3 MM)
- Grimmspeed Gaskets
- New Injector O-Rings

Just a little background, its a 2005 WRX...last dyno run was 316 AWHP on a hot day with no fan outside (long story).

List of modifications are here: http://www.ecotecforum.com/forums/ga...w_vehicle&id=1

The manifold removed




Grimmspeed Phenolic Spacer Installed


Removed butterfly portion of the TGV, rods still in place.


Boomba Racing Fuel Rails Installed






Everything installed, engine bay back together


The car felt great last night driving home. I was having a wierd misfire issue only in 5th gear and it may have been related to the fuel system in some way, whether it was the regulator or injectors themselves, so we just took care of everything all at once and no more problems.

Even without re-tuning, there is a noticeable power increase. We will be re-tuning soon with Backyard Turbo but the car feels great when in boost.

The main reason for even wanting to do the fuel rail is to try to prevent any cylinder 3 issues since its the last cylinder to receive fuel and its the closest to the turbocharger so it runs hotter as well. With this fuel rail setup, it is evenly distributed to all the cylinders.

Our priority is reliability with having a good amount of power as well.

If you guys want some more pictures, let me know.

[KronosPerformance]

Just to add out there, after we did the fuel rail swap and tuned (mind you kept the same 650 CC injectors), our injector duty cycle went from 75% to 60% and still support 11.5 Air/Fuel Ratio consistently through Wide Open Throttle. So it does help benefit fuel flow and take less strain of your injectors.