SpAm@FC

iTrader: (4)

Hello guys

so, i will go Turbonetics T60-1 this winter...

my goals are 300 to 400rwhp... so, lets say my goals are 400 rwhp to choose the injectors...

which fuel system should i run for this powerlevel?

Warlbro
2x720 primary, 2x1600 secondary? or is this overkill?
AN lines needed?
Fuel Pressure Regulator needed?

help me out pls

oh, the car is a 87 TII

thx guys

PS: searched but don't find a straight answer for this question

takahashiRyosukeFC3S

wow... very much overkill. the walbro pump is a good idea along with the fuel pump rewire you can find in the archives. i think all you need to do is put 720's on your secondaries.

hope that helps a bit,
TR

Aaron Cake

iTrader: (1)

There is a big difference between the requirements of 300HP and 400HP. For 300HP, you can get by with stock primaries and 720CC secondaries if you have upgraded the pump. Though going to 800CC secondaries would be a better option.

For 400HP the stress on the engine increases a lot and you need to maintain richer mixtures up in the higher boost levels. So you are looking at least 720CC primaries and 1000CC secondaries to be safe. Most people will go to 1600CC secondaries since they cheap, easily available and provide plenty of fuel for future use. Standalones are of course required to run injectors like this.

AN fittings and braided stainless are not necessary.

The Walbro pump is a good choice.

SpAm@FC

iTrader: (4)

thx guys...

fuelpump rewire is definitly on the todo list...

so, would 520ccm primary and 1600 secondary a good choise? or do i need 720 primarys to have enough fuel below ~4k rpm?

standalone is no option for me (this time, maybe in the future...) i will drive the car with an e-manage ultimate... would the 1600cc work with the e-manage? (dont have an idea why not?)

is it true that i need a custom fuelrail to run 1600cc injectors? (had read this anywhere here on the forum)

thx

Aaron Cake

iTrader: (1)

I don't know anything about the e-manage but for these power levels and injector sizes, you need a standalone.

arghx

iTrader: (3)

720/1000 should probably be enough. That's what I plan on running with my BNR stage 4.

Rotary_Rocket_87

Here is a link to a injector size equation relative to HP.

http://www.witchhunter.com/injectorcalc1.php4

Hope that can help.

SpAm@FC

iTrader: (4)

can you tell me the reason?

so, my plans are to hit 400rwhp... but realistiv i will only do 300rwhp

for 300rwhp, this setup would work?

720 primary, 1000 secondary, e-manage ultimate, Walbro Pump...
no AN Lines or FPR needed... right?

thx guys

gxlbiscuit

psss.... 720 secondaries and a pump alone will not support 300whp.... at least not for long.....pop. try to have just a lil bit too much dont max out your fuel setups

Aaron Cake

iTrader: (1)

I don't know anything about the e-manage but what I do know is that it is still a piggyback. The only time I saw one used was on a BMW and it didn't impress me. For what you pay, you could buy a Microtech/Haltech, or a bunch of Megasquirts...

Your fuel setup sounds fine.

SpAm@FC

iTrader: (4)

the reason why i go e-manage ultimate is because i'm a newb on standolens and nobody here in austria can tune a microtech, haltech or megasquirt ecu on rotarys...

some friends of mine know about the e-manage...

i definitly WILL go standalone in the next winter, when i canhandle the piggyback e-manage

i think its the ideal piggybackecu for guys like me... you can change injectorsizes easy, eliminate the AFM and replace with a MAP-sensor, manipulate the timing, make nice maps(will combin it with the profec e01...) etc. ... but, of course, nothing is better than a real standalone

thx aaron, so i will do this setup like discussed

thx guys

J-Rat

iTrader: (2)

Hmmm.. 400 on a piggy back might be a stretch. Not saying it cant be done, but I have never seen it.

Brody8877

iTrader: (10)

with those large injector, i think you should go Standalone.
Here is some ideas:
Haltech
Megasquirt
microtech
wolf3d

RotaryBuddha

iTrader: (4)

so heres a side question, why dont you go with a hybrid turbo and have some extra cash to spend on a better ecu.
you can still reach your goals with a hybrid.
https://www.rx7club.com/time-slips-dyno-128/finally-got-car-tuned-dynoed-569990/

www.bnrturbos.com

rxsevn89

Stay away from the walbro pump. THEY ARE CRAP. Seen many cars that have had fuel delivery problems and it was the walbro pump. (all different cars). Chris Ott who owns www.rx7.com says and it is even on the web site that they have a higher psi but the flow rate is lower. They have done tests to prove this. He says to run a gen 3 pump in the gen 2's with mods and bigger injectors. I run one and I have never had problems and I have been running two 720's off it. Just to let you know.

Brody8877

iTrader: (10)

or you can try running a nippon denso pump aka the supra pump

rotaryracer11

i know its a lil big of a pic but here is an idea of tuning with emanage......jus an example

turbo-111

so really the emanage is more of a street tune piggy back... not much it can do for somthing hitting 400hp... but what about just tunning a fc that is trying to get 275 to hte wheels ?

Aaron Cake

iTrader: (1)

Stay away from the Wolf. If I ever have to install one of those again, I'll cut myself...It doesn't run the stock FC ignition, the documentation for the actual programming sucks and the software is aweful. It's not like it won't do the job but there are much better choices for the RX-7...

It's interesting how people's experiences can be vastly different. I've never had an issue with the Walbro on any car...

Terrh

iTrader: (7)

FD pumps flow more fuel than stock, but NOTHING compared to a walbro.


You'll need more than just big injectors, you'll need the hardware to run them including an FPR and fuel pump, as well as bigger lines... I'd run the fuel rails in parallel as well, it's pretty simple to do. You'll want a bigger pulsation damper too, bigger fuel pumps and bigger injectors cause weird things to happen.

I've had no problems with my walbro 255, it works great. Loud, but a whole lot quieter than my car.

Aaron Cake

iTrader: (1)

The stock fuel lines are big enough for 500HP, and with a standalone you don't necessarily need a different FPR since you can easily compensate for increased pressure.

Anyone who thinks a Walbro is loud has never heard a real fuel pump before.

classicauto

iTrader: (3)

questions about which size injectors to run?

21 replies and no one has linked the fuel calculator??

If you EVER need to know how much fuel for a power level, this is the PERFECT approximator.

http://rx7.com/cgi-local/2ndgencalc.cgi

classicauto

iTrader: (3)

Well to be honest, tuning the emanage with anything other than the 5 dials on the front IS tuning a standalone for all intents and purposes. You can build a 16x16 ignition and 16x16 injector map. So if no one around you can tune a standalone, you may as well buy an S-AFC......

You can't.......CAN'T............eliminate the AFM with the emanage. It would be *possible* with the emanage ultimate but you'd have to be the guy who figures out the differential between airflow/velocity vs. density and then build a corresponding map and hope it works..... And if you can't tune a standalone, I doubt you'll be able to do that. Hell, I doubt most anyone could!!

FWIW, I picked up a few japanese tuning mags at SEMA this year and saw a TONNE of FD drag cars running 10's-11's all of which had merely either HKS F-CON's or additional injector controllers. Now, I realize its not "the" way to do it and its more of "chainsaw to carve a toothpick" scenario, but it has been done.....repeatably...

SpAm@FC

iTrader: (4)

i have an SAFCII... and i want to have more controll about my engine

of course the e-manage is "like" a standalone... but i don't have to bother about outsidetemp correctionmaps etc. on the beginning... i also can easily swap from s4 to s5 AFM...

there is a first step EVERYTIME...

classicauto

iTrader: (3)

Hey, to each his own, Im just telling you what my personal experience with E-manage has lead me to realize, and that is:

For anything other than mild, basic adjustments and learning (learning shouldn't be done on a 400+ hp setup) the e-manage is great and a good starting block. But if you want to get serious.....then get SERIOUS!!!