fuel pressure regulators??

[jamesk]

i searched the forums and there is nothing about these for NA? why wouldnt these be effective for us to take some fuel away? i have a wideband, and my car's afr goes to 10:1, and thats way to rich. i just want to take a little bit of fuel away and thats it.

fuel regulators are cheap and effective, im just wondering why no one is using any? i already tried the split second afc for my car, that was just a big waist of money. maybe this is another option i can do?

i need feedback, cause the forums have nothin on this topic.

 

[LordWorm]

i searched the forums and there is nothing about these for NA? why wouldnt these be effective for us to take some fuel away? i have a wideband, and my car's afr goes to 10:1, and thats way to rich. i just want to take a little bit of fuel away and thats it.

fuel regulators are cheap and effective, im just wondering why no one is using any? i already tried the split second afc for my car, that was just a big waist of money. maybe this is another option i can do?

i need feedback, cause the forums have nothin on this topic.

Don't know if it is going to help you, the standard ecu is just going to see a change in AFR via its O2 sensors, and open the injectors more to compensate.

Best way by far to alter your AFR is some form of aftermarket management. The weapon of choice is the Microtech LT10S.

Thats not to say FPR's don't have their place - for highly modified NA motors you are still going to want to have control over your fuel pressure.


Try it and see, but my money is on the ECU working against you in this instance.

 

[jamesk]

but regardless of what the ecu thinks, wouldnt the fuel pressure still drop, therefore leaning out the ratio? me having a rich mixture of 10.0:1 would you think there is a chance to get more rich? it seems like the injectors are dumping alot because of all the bolt ons i did.

i do see your point, but doesnt it work for the msp? i thought our ecu's are the same, just set up differently?

 

[LordWorm]

but regardless of what the ecu thinks, wouldnt the fuel pressure still drop, therefore leaning out the ratio? me having a rich mixture of 10.0:1 would you think there is a chance to get more rich? it seems like the injectors are dumping alot because of all the bolt ons i did.

i do see your point, but doesnt it work for the msp? i thought our ecu's are the same, just set up differently?

the car is working out the AFR based on a variety of things. Its getting info from 2 O2 sensors, its getting air temp, its getting MAF readings, and so on and so forth..... from that it determines what the AFR is, and also gets a determination of the best course of action within its limited control to get things back to what the factory boffins thought was clever.

There is a limit, and you can exceed the standard ECU's ability to adjust itself, but once you get that far you're best off going stand alone for safety.

Standard ecu isn't going to care what your fuel pressure is for the purpose of controlling fuel... its just going to see that its leaner than it wants it to be, and increase injector duty to compensate. 10:1 is way rich... i run about 12.5:1 at full tilt and on the safe side of lean for cruising (around mid to high 14s). In doing that i make more power, and get better milage...and the only way to get that sort of result is to take the standard ecu out of the equation.

 

[jamesk]

well how would i lean out my ratio? i already tried in using the splitsecond controller to cut fuel back, but that didnt work out. the only place is where i need improvement is at wot. everthing else is where it needs to be, but at wot, its too rich. when i pulled out my spark plugs , all of them were black,lol.

 

[wikdsx]

He just told you. You will need an aftermarket computer. Either the Haltec E6x or the Microtech