N/T Fuel pressure regulator on a turbo engine???

[nightspeed87]

I read that the n/ts fuel pressure regulator has more pressure than the turbos regulator, so to get more fuel will this help by putting that regulator as far as helping to crank up the boost on the turbod engine????
I have a 190 lph pump and bigger fuel lines as of right now thats it... any advice on doing this?

 

[ChicksDigBoost]

Dataloggers are cheap and the software is free, I don't suggest turning the boost up without it. Kinda confused on your post your info says you have n/t with a turbo, so aren't you already running n/t regulator? What turbo are you running? And yes the n/t regulator has a higher base fuel pressure than the turbo regulator.

 

[dsmsucks]

I asked the same ? in the bolt on section and got no respones. I having fpr overrun. So far I came up with the following car fpr that work
evo
nt
1.8 sohc colt

 

[mavisky]

Running the nt fpr simply raises your base fuel pressure by around 8 psi if I remember correctly. I ran one back in the day and it worked fine. If you have the 190lph pump I guarantee you that you're not getting pressure overrun due to it. Rewire that 190, throw on the nt fpr and assuming you're on the stock 450cc turbo injectors, ecu, and maf you could probably run 16psi safely in it.

 

[xveganxcowboyx]

Get the logger. $30 to get it setup and run safely. If you can afford a car, you can afford that.

 

[overboostedawd]

im also going to be running the n/t fpr but i have evo8 injectors they are 560cc with a 255 pump this is only going to be tempary till i get my -6an ss lines and fitting then im geting a real afpr

and id gues its a mod you could get the b&m afper that uses the stock fpr off ebay for like 30$ i also would go turning you boost up till you have a loger you can get one off ebay for like 15$ the palm m100 is cheap and work fine i used it for a year b4 i got my laptop datta loger then you just need to make or buy the datta loging cable for around 10-15$ and download a loger i use tmo but have a few others on disc if you need me to email you a copy of some softwaer when you get your loger let me know hope this helps

 

[nightspeed87]

ok ths is all helpful information ... im not looking to increase boost too much im not trying to be a street racer or nothing, but i would like to see what it can do when i raise it, but i definitly will get the datalogger first.

 

[GSTBlack95]

im also going to be running the n/t fpr but i have evo8 injectors they are 560cc with a 255 pump this is only going to be tempary till i get my -6an ss lines and fitting then im geting a real afpr

and id gues its a mod you could get the b&m afper that uses the stock fpr off ebay for like 30$ i also would go turning you boost up till you have a loger you can get one off ebay for like 15$ the palm m100 is cheap and work fine i used it for a year b4 i got my laptop datta loger then you just need to make or buy the datta loging cable for around 10-15$ and download a loger i use tmo but have a few others on disc if you need me to email you a copy of some softwaer when you get your loger let me know hope this helps

DO not get the B an M FPR thinger, thats a waste of money as it only increases pressure and you cannot turn it down.

 

[Caithness]

You'll need some sort of tuning or you'll run pig rich. It raises fuel pressure 10 psi, and it makes your 450s flow more like 550s would on the stock 1g fuel pressure. If you don't have a tuning device, I'd swap the stock regulator back in until you do.

 

[timloomis]

You know this for sure?I put the n/t reg on my tsi on the stock 450's and it ran like poo after a week.Plugs are black as hell too.I leaned out the maft a bit(15% @ wot) and it was a little better,but my logger wasnt hooked up so I didnt want to chance knocking.I hope this is my problem.

 

[nightspeed87]

i guess its only a good deal when tuning. what fuel pump where you running with that set up

 

[timloomis]

I'm running the 3000gt vr4 pump,it flows 180lph.

I just checked on rc engineering's site.Caithness is right on the mark.According to their formula's,10 psi on each injector makes that injector act like a 505.8cc injector.Time to lean it out some.

That was it,I was running rich.Turned the maft up to 500cc,and I now roast 3rd gear.

 

[nightspeed87]

does that added pressure on the injectors affect the longevity of the injectors ???

 

[Raph]

hmm,i got a nt regulator,i used to run a vortech style fmu fpr,now i switched to the aeromotive thing..are you all saying i shoulda kept my stock 4g63 nt one??(got 2 lying round somewhere,gotta go find em..good thing i dont throw car stuff away)

i never ever tried it out,i just put on the aeromotive one without even testing the old one.

 

[nightspeed87]

check the psi of the one your currently running, and then look up the n/t 4g63s fuel regulator pressure

 

[timloomis]

I don't have a fp gauge,but the books says that turbo fpr's are 38 and n/a's are 48 with the hose on.I don't see how 10psi could burn the injectors out though,I leaned them out so they arent opening as long anymore.I guess time will tell.

 

[nightspeed87]

just long as you can log what your doing so you dont lean it out too much. You should get good results from it though, i dont see why not. Im going to have a 255 now instead of 190 with that n/t regulator and im going to be running as rich as bill gates. ( until i tune it that is. )

 

[timloomis]

Little update here.Logged my duty cycle today on the n/t fpr,450's and 15 psi.67% duty cycle.Found a BIG benefit of using the n/t fpr.

 

[nightspeed87]

really.... Im going to be using it on a 190 not 255 like i posted above, but I dont have any tuning equipment yet or a logger hooked up yet so will I still be straight...
Also you feel like the n/t regulator helped huh? Does the n/t regulator keep a 1:1 ratio
as in every 1psi or somethin like that it raise 10 pounds of fuel pressure, or somethin like that someone was trying to explain to me about the 1:1 ratio.... But you say your car runs good huh.

 

[timloomis]

Yea it runs fine.I'll be able to max out the 14b if I dont get too much knock on this setup.You will need fuel control though.I fouled my old plugs because it was running so rich.I'm assuming its a rising rate fpr.It's supposed to raise fuel pressure 1 psi for every 1 psi of boost.But it runs fine so far,just a pain to tune with because I had to figure it out.Here's the formula I used,got it off rc engineering's site:square root of (new fuel pressure(47) divided by old fuel pressure(38)) then multiply that by your old injector size(450).

 

[nightspeed87]

Yea it runs fine.I'll be able to max out the 14b if I dont get too much knock on this setup.You will need fuel control though.I fouled my old plugs because it was running so rich.I'm assuming its a rising rate fpr.It's supposed to raise fuel pressure 1 psi for every 1 psi of boost.But it runs fine so far,just a pain to tune with because I had to figure it out.Here's the formula I used,got it off rc engineering's site:square root of (new fuel pressure(47) divided by old fuel pressure(38)) then multiply that by your old injector size(450).

oh ok... oops I didnt see you posted this, and I just asked you a question about this in another thread..oK well when my cars up and runnin and im going to use the n/t fpr then ill get some info from you..... You didnt hack your mass with those tunes did you?
Just wondering because I kno hacking leans it out a lot...? Wonder how its going to work?

 

[timloomis]

im runnning the maft in blowthro.