2871r SR20 redtop

[S13 curtis]

Ok guys my car was getting tuned and my 370cc injectors maxxed out.
But to end the 370cc injectors can't be ran on a 2871 on stock boost is a lie. 370's hold fine but would recommed it on 8 psi.
my car is tuned on a Greddy E-Manage blue BTW. it maxxed out @ 10 psi injector duty cycle was at 100% from 6500 and up.
so i got a Megan FPR in that i jus installed today. i hear stock fuel pressure is 38 psi. i was wondering if i could turn it up 55psi and will it be fine. when the injectors maxxed out it went from 11.7-13.3 AFR on the wideband by redline(WOT).
my set up:
Greddy intake manifold
Megan Exhaust manifold
Apex 1.1mm Metal HG
ARP Headstuds
GT2871r.64 w/circuit sports lines
Megan Elbow and Down pipe and test pipe 3 inch
stock cams
exedy stage 2 clutch
FMIC 32x12x3
2.5inch steel intercooler pipes
Brian Crower Springs and Retainers
Walbro255lph
Greddy E-manage blue w/all accessories
Megan fuel Pressure regulator
370cc injectors
stock pistons and rods.


I will be getting deatchwerks 740cc injectors soon so don't bash me.
Jus let me know what pressure is fine.
Help Please

[smelly240]

MEGAN FPR - good job superdude... it even says on their own website that it IS NOT FOR TURBO APPLICATIONS

therefore when given boost the fuel pressure will not properly rise at a 1:1 ratio

also - this means when ur stock fpr (38-39psi at 0 vac) is seeing 15psi of boost and has the fuel pressure at 52psi - the megan won't be at (if u set it to 38-39) 52.

[nani]

injector duty at 100% yikes!!

[smelly240]

YEAH - 13.3 AFR isnt good at all... ouch

[S13 curtis]

i don't think im the only person using the megan, my friend S14 Kouki that is tuning my car is also using it.

i jus found out what u meant by 1:1 on phase 2 motorsports. so how would i adjust it and what would be an ok pressure.

[smelly240]

You should not be using that fpr period. Your friend needs to remove it also. Theres no such thing as "ok" non rising regulators on our cars.

AT LEAST 2 ENGINES HAVE BLOWN DIRECTLY RELATED TO THAT FPR.

[s13dan]

i would say dont go WOT until you get the proper size injectors. No reason to do that to your motor.

[S13 curtis]

You should not be using that fpr period. Your friend needs to remove it also. Theres no such thing as "ok" non rising regulators on our cars.

AT LEAST 2 ENGINES HAVE BLOWN DIRECTLY RELATED TO THAT FPR.

well the fuel pressure is now set @ 58 psi and im getting a re-tune in an hour. ill let you guys know how it goes.
he said he can remove some fuel to compensate for that, and that pressure should be fine at WOT. right now it idles at 12.6 AFR, w/58psi of fuel. he will get it to 14.7-8 AFR for idle and adjust it while it gets tuned.

[smelly240]

Sounds like a bandaid... Hope you dont like that motor too much.

either buy the right shit - or dont play.

[slider2828]

OMG I threw that megan junk away.... inconsistent pressure all day... It was the most useless 80 bux I used on my car.... plz....

Yah he can just give me his motor.... Lol.....

[Sileighty_85]

WTF makes you think 370cc would support the 2871R

I dont understand why your tuner would even attempt to tune your car with out the proper supporting mods.

[slider2828]

Cause he doesn't like his motor nor does his tuner and wants to give it to me.....

[zaneithan]

i dont get the point of this post, in the original thread you are asking what pressure is right, and everyone is telling you that the FPR you are using will more than likely result in damage to your motor, yet you insist upon arguing, so why even make this thread? lol

[Sileighty_85]

i dont get the point of this post, in the original thread you are asking what pressure is right, and everyone is telling you that the FPR you are using will more than likely result in damage to your motor, yet you insist upon arguing, so why even make this thread? lol

obliviously he doesnt know much if he tried tuning on a 2871 with 370cc injectors...TWICE!!

[zaneithan]

obliviously he doesnt know much if he tried tuning on a 2871 with 370cc injectors...TWICE!!

lol and doesnt want to know much if he is ignoring what everyone is telling himi about having the wrong FPR...there is even a first hand account posted about it!

[MadScientist]

Dont buy products made by a company that can't even post relivant informations.... like PSI, KPa, or BAR!!

BTW... SARD is the best and it doesn't cost alot... I'm sure the Megan is cheeper... thats the point!

-Drew

[Kouki Sam]

The tuner is tuning what his car has, what mods are in his car is his choice hes already been informed by the tuner that this is a band-aid for now but thats his choice, dont bash on the tuner if you have no clue abt him.

yea ppl say fpr is a cheat and bigger injectors is a must for a bigger turbo he knows that, but some ppl take the risk and some ppl dont.

~The Tuner~

[SidewayZ-s14]

The tuner is tuning what his car has, what mods are in his car is his choice hes already been informed by the tuner that this is a band-aid for now but thats his choice, dont bash on the tuner if you have no clue abt him.

yea ppl say fpr is a cheat and bigger injectors is a must for a bigger turbo he knows that, but some ppl take the risk and some ppl dont.

~The Tuner~

LOL.
Looks to me like the kid who is getting his car tuned is crying to the tuner?
O'well, not my car/engine.
GoodLuck!

[Sileighty_85]

The tuner is tuning what his car has, what mods are in his car is his choice hes already been informed by the tuner that this is a band-aid for now but thats his choice, dont bash on the tuner if you have no clue abt him.

yea ppl say fpr is a cheat and bigger injectors is a must for a bigger turbo he knows that, but some ppl take the risk and some ppl dont.

~The Tuner~

I dont see a bandaid I see a mistake,

there is no way you can use 370cc injectors with a 2871R if 10psi Maxes out these injectors and the waste gate is preadjusted to 14 psi i dont see how that shit will work.

an S14 turbo in and S13 wil max out the injectors @ 11psi

Its Retared to even try.

But oh well Your time and his money/engine

I guess you could start looking for another SR for him

[Kouki Sam]

well his wastegate isnt adjusted to 14psi, I saw the boost guage only hit 10psi, realtime in emanage saide 100% duty cycle by abt 6k rpm thats when i told him let off and thats when i saw the wideband go leannnnnnnn. I did 11 psi on 370cc on a 2871R but then again that was on ka-t so....

[Sileighty_85]

you do know that running injectors at 100% is not good right?

Whats the point of dyno tuning an engine when you cant run the turbo a at its best
the 2871R is capable of pushing 22ish PSI why tune for less than half and risk blowing up his engine?

Why would you even try to dyno tune his car with out proper supporting mods?

I bet you when that engine blows up on your dyno hes gonna want you to pay for a new engine.

and you do know that when the SR "Engine Brakes" injector duty cycle is at 0% so that would explain why the wide band would show lean

[smelly240]

lol - ~the tuner~ doesnt know his shit if he even thinks to tune a car with that fpr on it.

"THE TUNER" that has a Megan FPR on his car is just as naive as the OP.

90% inj duty cycle is BAD - 100% is causing the inj (and engine) damage.

I know that when people come out to get their cars tuned - and they have that fpr - I tell them to go get the stock one. If they run out of fuel - they need bigger injectors PERIOD.

i no longer care to help you... i should have never told you that part was not for turbo cars - and laughed at you when your "Enginah Broow"

[S13 curtis]

WTF makes you think 370cc would support the 2871R

I dont understand why your tuner would even attempt to tune your car with out the proper supporting mods.

my car is alot better now.
i need to get 740's bad tho. im workin on it.
i wasnt planning to run 370's, i jus got laid off and need to get my car going. getting 740's this week hopefully.
when the 740's come in im putting the stock FPR in.

but thanks for your input.