 Fuel Pressure Regulator, PSI setting ????? |
 Aug 16, 2003 - 4:25 PM
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 Enthusiast  Joined Sep 27, '02 From UK Currently Offline Reputation: 1 (100%)  |
OK, I'm in the process of installing my aftermarket fuel pressure regulator.
Installation seems pretty straight forward. However, when I come to set it what PSI can I go to? The manual states between 38-44 PSI as standard. Can I increase the PSI over 44, if so to what PSI? Also, what PSI can the standard Fuel Pump cope with? Any help would be greatly appreciated. BTW: I have a '97 ST with standard injectors, an Injen IS2040 intake, Denso Idridium spark plugs and Magnecor KV85 spark plug wires. |
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Aug 18, 2003 - 10:45 PM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
Why spend the money on any mods if you're not going to allow them to work properly? Why not just install a fake BOV? Its the same thing. First of all, there is no such thing as "sterio." I believe the abbreviation you're looking for is stoich. which stands for stoichiometric. This is the optimum combustion ratio of gasoline and air and is 14.7:1. Different cars actually prefer to be at different ratios. Some cars will make peak power when they're a little lean, others when they're a little rich. There isn't much danger in going a little lean on an N/A car. Generally an engine will make the most power at about 13:1 but again, this varies from engine to engine and car to car. Turbo and SC cars are a total exception (don't ever go lean on them). Being too rich is just as bad as being too lean on an n/a car. It will cause lower cylinder temperatures which will make less power, produce more emissions, and will produce excessive carbon deposits in the combustion chamber, on the exhuast valves, and in the exhuaust runners. Carbon deposits in the combustion chamber will result in 'hot spots' which will eventually cause detonation. This detonation will destroy your engine in just the same way that being overly lean will. If you're '100% rich' all of the above things will happen rather rapidly on the street. I sure wouldn't say 'so what' if it was my engine. If your O2 sensor were bad, then it would trigger a CEL. If it isn't bad, there will be no light. There is no advantage in changing it out for another properly working stock unit....if it aint broke.... It is possible to tune an engine on the street, but no matter how you do it, you have to have a wideband to do it right. You sir, are 'absolutely' incorrect. 
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Posts in this topic
3TST Fuel Pressure Regulator Aug 16, 2003 - 4:25 PM
west_minist I think the standard psi is 35+.
You can set to a... Aug 16, 2003 - 4:46 PM 3TST West_minist thanks for the info.
I think I'll... Aug 17, 2003 - 12:34 PM ToYCeLi8 I'm getting a SAFC II for my st-185 swap. What... Aug 17, 2003 - 1:09 PM 97sccelica QUOTE (ToYCeLi8 @ Aug 17, 2003 - 11:09 AM) I'm... Aug 17, 2003 - 2:12 PM ToYCeLi8 QUOTE (97sccelica @ Aug 17, 2003 - 12:12 PM) QUOTE... Aug 17, 2003 - 2:24 PM Lar- QUOTE (vphmc @ Aug 16, 2003 - 9:25 PM) OK, I'm... Aug 17, 2003 - 2:33 PM Lar- QUOTE (ToYCeLi8 @ Aug 17, 2003 - 7:24 PM)
I won... Aug 17, 2003 - 2:38 PM west_minist QUOTE (vphmc @ Aug 17, 2003 - 12:34 PM) West_... Aug 17, 2003 - 4:33 PM 3TST In order to play it safe, I'm going to initial... Aug 17, 2003 - 7:36 PM SpedToe169 QUOTE (west_minist @ Aug 17, 2003 - 2:33 PM)Q... Aug 17, 2003 - 10:46 PM 3TST Thanks for the advice.
I installed my Cosmos Raci... Aug 18, 2003 - 6:15 PM west_minist QUOTE (SpedToe169 @ Aug 17, 2003 - 10:46 PM) ... Aug 18, 2003 - 8:28 PM snadman Toyceli8, don't bother with the SAFC2. How abo... Aug 19, 2003 - 12:36 AM 3TST One very very basic thing that has been overlooked... Aug 19, 2003 - 5:08 AM west_minist I believe unlike you, he is not going to be racing... Aug 19, 2003 - 6:51 AM ToYCeLi8 QUOTE (snadman @ Aug 18, 2003 - 10:36 PM) Toyceli8... Aug 19, 2003 - 3:16 PM west_minist It replaces your ECU and offer you flexibility in ... Aug 19, 2003 - 4:26 PM 98celica3 if anyone needs a FPR let me know. i have one with... Aug 19, 2003 - 9:34 PM trouble_st QUOTE (ToYCeLi8 @ Aug 19, 2003 - 12:16 PM)QUO... Aug 20, 2003 - 2:30 AM Silver94CelicaOwner While we're on the topic of fuel pressure regu... Aug 20, 2003 - 1:45 PM west_minist QUOTE (Silver94CelicaOwner @ Aug 20, 2003 - 1:45 P... Aug 20, 2003 - 3:30 PM FallenHero Stand alone systems just cost so much... If I were... Aug 20, 2003 - 7:28 PM Silver94CelicaOwner So what exactly will a fuel pressure regulator do ... Aug 21, 2003 - 1:04 AM 3TST The AFPR (Adjustable Fuel Pressure Regulator), as ... Aug 23, 2003 - 6:01 AM Silver94CelicaOwner Thanks vphmc, thats the kind of response i was hop... Aug 23, 2003 - 6:51 PM
3TST This is where I would start ...
First of all, you ... Aug 24, 2003 - 3:27 PM |
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