the b man

curious what size injectors ill need for this engine/turbo setup? Also curious how much boost I can safely run with stock internals and a good tune?


Modified by the b man at 1:10 AM 7/6/2007

almostboostedgsr

rc 440cc injectors

Walbro 255 fuel pump

Adjustible fuel pressure regulator


The wideband setups are bought in kits.

the b man

ok... about wideband, so it is more than just an o2 sensor, its a whole kit that must be installed? I can still use the air/fuel gauge I have with a wideband setup right? where can I get such a kit?

the b man

oh one more thing, is an adjustable fuel pressure regulator the same thing as an fmu?

almostboostedgsr

Alright what you have now is a narrow band 02sensor. Wideband is totally different. You can still use your air/fuel gauge.

A fmu is totally different than a fuel pressure regulator. A fpr makes sure the fuel pressure is kept at what you set it at.

blaze the chemi

check the FAQ at the top of the forum. These will at least give you a start on the basics and what all the terms mean. Try to stay out of boost until you know it's tuned.

the b man

ok, thanks for the info, I have one more question though. my vehicle has an n/a motor which was turbo'd, and the fuel system uses a vacuum line running from the intake manifold. Therefore there is positive presssure in the intake manifold now, not negative pressure, meaning no vacuum for the fuel system to use. Is there some sort of change ill need to make to the fuel system itself to have it not need this vacuum, or does it not need it? Is it solely controlled electronically? Just trying to cover all my bases here...