Zero R

iTrader: (1)

There is nothing wrong with KG fuel rail, it does what it needs to do, half the FDs out there don't look to good either to each his own. Personally I am not a fan of the PFC, 1 out 10 may idle correctly, I would rather have a plug n play microtech, but that's just me. Why would a rail come with resistors? If your buying a complete fuel system from somewhere maybe a rail? nah.

allenhah

iTrader: (4)

I'm beginning to think that the fuel rail just might be overkill, and the fact that I have to cut the injector harnesses and put in resistors (possibly) is making me think twice. I've asked a couple other people running the RX6 turbos, and none of them seem to be running upgraded fuel rails either.

I'm going to try and cancel the order, and if it's already been processed, it'll be up for sale soon...

1FooknTiteFD

I made 380 rwhp without that stupid fuel rail on 1300cc secondary injectors using 91 octane. How much more can that stupid fuel rail help?

supracosworth

Any thoughts on running additional injectors using the Greddy elbow and Trust Rebic AIC? I've got that setup but haven't installed it yet. I'm running a TD06-25G and the RE Amemiya ECU is set to run on stock 550cc/850cc injectors and raised fuel pressure. Instead of changeing the stock injectors, I'm think of running the additional 1,000cc injectors on the Greddy elbow using either the AIC or e-manage. This "old school" mod seems to be quite out of fashion now but I'm not sure what's wrong with such a setup either. Any thoughts?

HEns

looks good, but seems very expensive imho.
as for gt35r, its pretty comparable to the rx6 cept it seems to have a higher top end then the the rx6 in the dynos ive seen.

rxrotary2_7

funny you are saying this... how much did that single set you back? how much did it help then if you were able to get 380? couldnt that be achived on stock twins? or are the twins not "tite" enough?
one thing that never ceases to amaze me is how people here in the US are so worried about the looks of things rather than the function...
isnt it funny how you can go to the track any day of the week (this is true in my neighborhood anyway) and any given night see an old rx, or starlet, or MG or whatever you see that looks like a total POS, has wires everywhere, dirty *** engine bay, no "recognizable" aftermarket parts, not one thing polished... yet this same car can run an 11second time being n/a. or if they do have a turboed rotary, you still see the same "mess" under the hood and not one single "name brand" aftermarket part or polished piece run like a bat out of hell. yet, Joe Schmoe comes rollin in the lanes with his polished engine bay, FMIC and body kit and runs a blazing 15 second pass on his "show stopping", good "looking" single turboed FD. You know why? their first question when looking into something is not "how does it look?", but "how does it work?". this is what they are worried about. not about having name brand IC, or greddy this or HKS that. they have a bunch of parts that all work together. you (not you personaly) have a bunch of name brand polished **** that dosent go anywhere.... ironic isnt it?
back twords the topic... its a fuc@ing fuel rail. thats its job. nothing else. i guess i could start bringing up the topic of 1300's failing... i could direct you to a few people who have lost motors to them. are they "****" then? i wouldnt say that. but you seem to have an adjenda of some sort, so i will leave you alone now. if you want to continue this please PM me and keep it off the board. good day.

allenhah

iTrader: (4)

Hmm...now I'm wondering about the fuel pressure regulator since I'm not going to be using the rail. Are you guys that are running singles using an FPR with the stock rails?

Zero R

iTrader: (1)

allenhah, buy the rail the 1300 are as not reliable, resistors are cheap and easy to install or better yet sell the PFC get a microtech for the same or less and no need for resistors or cutting the harness,and no hunting idle that drives you insane. would you rather do this once and be happy or in the end or keep messing with it? One 1300 injector fails and bye bye motor I have enough experience with both and can tell you, I have yet to have a 1600 fail but I have had 1300's fail more than once.

1FooknTiteFD

The single set me back a little over $3000 2 years ago. It's funny how people say the RX6 isn't a good turbo because it doens't make that much power over stock. Let me ask you something, go find any twin turbo FD that makes 380rwhp on 91 octane at only 1 bar of boost. If you find one, bring it over here to the bay area and if it makes near that much power at that boost using 91 octane, I will pay for the dyno and shut up, but until then I don't think it's fair for you to say that the stock twins make around the same power when they don't.

Since when did I say I gave a **** about how things look? Ever seen Ghetto Dave's car? There is a reason we call him "ghetto" but guess what? his car makes 440rwhp and runs mid 11's, I never said anything about looks or name brand has to do with anything.

The only assertion I made was that 1300cc injectors were more than enough for the apex'i RX6 turbo kit that allenhah here was considering getting using his intended setup (power fc, mp, cb, ic) and that stupid fuel rail isn't needed so why complicate things? If he was going to run a T78 that would be a completely different story now as he would probably need 1600cc injectors.

Now as far as Zero R's assertion on idle and power fc's or other ECU's go, I think it's all in the tuning. A good ECU or any ECU as a matter of fact is only as good as its tuner. Obviously a power fc that is untuned or tuned poorly will not idle well or run right, but the same goes for microtech, haltech, or even motec. It goes to say that one should get the ECU and parts where they can get the most support and tuning out of.

Allenhah, you are more than welcome to check out my car and setup sometime and you can be the judge for yourself if it's fast enough, idles smoothly enough, or makes good power. PM me sometime.

1FooknTiteFD

I am using the stock FPR on my car, like I said, it's better not to unecessarily complicate things. For what it's worth, I have had over 25000 miles on my current setup (since converting to a single turbo) with no problems whatsoever. The car is almost every day driven too.

Zero R

iTrader: (1)

Right here


Agreed on the what your tuner is familiar with statement, however PFC's not wanting to idle right has little to do with the tune it is a known issue. I've tuned plenty they are OK they are not what I would run on my car and don't. I do not recommend them to my customers either.

allenhah

iTrader: (4)

I just got off the phone with Rick, and he recommends I bore out the secondaries to 1200cc's, which is what Russ at RC Engineering supposedly recommends. He has many customers, including himself, that runs 1200s with single turbos, and they seem to stay under the 85% duty cycle. Rick himself had a Greddy T-78 at 15psi running 1200s and upgraded fuel pump only, and said duty cycle never got past 84% with conservative tuning.

I think that's what I'm going to do. The price, however, is a little steep...looks like it'll cost almost $400 bucks to do both injectors.

clayne

Go with the 1600s and do it right.

Cutting the wires is not a huge deal to rectify after the fact. If you want, I'm sure you can even find the same plugs and splice those onto new leads, leaving the OEM plugs intact.

allenhah

iTrader: (4)

Update:

Major setback for me here. I just got a call from Rick, and I guess he's been stressing about all the work that needed to be done on my car and the liability problems it's brought up. He's no longer willing to install or setup the turbo kit or the dual oil cooler (since they're both used, and the legality issue of fixing up a car for the street less smog equipment). I'm currently trying to figure out what my options are, but at this point, it looks like I might just ask him to build the motor as planned, install bored out 1200 secondary injectors, install the flywheel, and basically put the car back together the way it was so that I can drive off with it. I'm thinking that at that point, I'll go ahead and install the coolers and the turbo kit in my garage, although it stresses me a little to think about it (going to need a little washer here, a small gasket there, this hose is missing, blah blah blah). I'm thinking of then maybe taking a weekend trip down to southern Cali (to speed up the break-in process) and have a tuning session with XS Engineering.

Baaaah...frustrating...

1FooknTiteFD

allen, check your pm

Houdini

iTrader: (3)

Hey Allen,
I met you at Rick's when you were picking up your car. I've never seen anyone pack 2 cars with that many parts. Are you sure you want to put on that single, CA SMOG is gonna kill you. I'm having a hard time getting mine smog'd and I'm back to pretty stock now. Also, I hate to say it but you over-payed for the single. Jason was selling a brand new kit 6 months for just over $3k. If you do put the kit in, wait til after the next time you smog your car, that way you won't have to deal with it for 2 years unless the poo-poo pops your hood.

Anyhoots, nice to meet you and good luck with the car
Hoodin

1bad7

hey ladies just thought id put in my 2 cents here as i was just at the dyno lastnight tuning my new apexi rx6 kit. the car is running stock pump with the stock 850's bored out to 1300. with a conservative tune (not complete) the car made 327rwhp at approx 6K (15lbs) with ignition breakup... the duty cycle peaked at 79%. now this is on a stock motor with all the bolt ons and a powerfc. the car has no problems holding a perfect idle nor any other irradic issues... so yes it can be done and its very reliable... once the ignition issue is fixed its going back and looking to see approx 380rwhp @ 8K with 15lbs. good luck

1FooknTiteFD

1bad7, you should really upgrade your fuel pump.

I had the exact same problem you had before I upgraded my ignition. Anything over 10psi I was getting bad ignition breakup and misfires. I added magnecore spark plug wires, HKS Iridium plugs, and a B&M ignition amplifier and the car runs really well now.

good luck with your car

1bad7

thanks for the advice, for now im just going to revert back to new factory wires and new "9" plugs. if that doesnt work then ill try your ignition amplifier

allenhah

iTrader: (4)

Some pictures of the install here:

https://www.rx7club.com/single-turbo-rx-7s-23/apex-rx6-installed-pictures-380478/

power hungry

i had the apexi Rx6 kit and the bearings went out almost right away and couldnt rebuild the unit. So just be warned if you have problems with you will be buying a new turbo and not just a simple rebuild.

APEXL8T

Do you get service at PR MOTORSPORTS?

Hayward.

allenhah

iTrader: (4)

Negative. I get any major engine work done at Rick's Rotary Performance in Pleasanton.

Yeah I'm aware of the rx6 kit being non-rebuildable, but I bought the turbo from Fritz, and they had less than 10k on em, so I'm not too concerned about the turbo crappin out...yet...

=]