Fuel pressure regulator, vacuum reference or not??
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Fuel pressure regulator, vacuum reference or not??
I see that most fuel pressure regulators are vac/boost referenced, but some are not. I know that you can get more range out of the injectors if you vary the pressure, but if i plan to have a drag race (bracket race) specific application where consistency is important, will this just be adding a variable to the equation that can cause me to chase tuning parameters and decrease my consistency ??
"Any problem that is persuasive, persistent, or unprecedented is unlikely to be solved by hand me down principals."
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Matt Cramer
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Re: Fuel pressure regulator, vacuum reference or not??
By referencing the regulator to manifold pressure, it is better at maintaining a constant pressure drop across the injectors. While you could run it without referencing it to manifold vacuum, I don't see any benefit when it comes to consistency.
Re: Fuel pressure regulator, vacuum reference or not??
Hmmmmm......... how does it do a better job at maintaining a constant pressure drop when vac referenced as opposed to not vac referenced??Matt Cramer wrote:By referencing the regulator to manifold pressure, it is better at maintaining a constant pressure drop across the injectors. .
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Minami Kotaro
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Re: Fuel pressure regulator, vacuum reference or not??
As manifold pressure changes, fuel pressure will change in a 1:1 ratio with it, keeping the relative pressures consistent.JAM wrote:Hmmmmm......... how does it do a better job at maintaining a constant pressure drop when vac referenced as opposed to not vac referenced??