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Which fuel pressure regulator?
Posted: Thu Nov 08, 2012 6:51 pm
by sticky nicky
Im wanting to put a fuel pressure regulator on my rebuilt NA6 turbo engine, any suggestions on a good one?
Thanks
Re: Which fuel pressure regulator?
Posted: Thu Nov 08, 2012 7:33 pm
by Sailor
Re: Which fuel pressure regulator?
Posted: Sat Nov 10, 2012 9:48 pm
by Sean
Why do you want one?
If I recall you guys are running a link ECU (or some other programmable type)?
Assuming you're not making over 200rwkw, the stock reg will be fine as long as it's not malfunctioning.
Rising rate are often pushed as ducks guts, but a stock style linear rate is a better option IMHO, if you want more fuel, open the injectors longer - much cleaner and more managable solution - again, assuming you have a programmable ECU.
Re: Which fuel pressure regulator?
Posted: Sun Nov 11, 2012 9:21 am
by Basho
I used a Malpassi rising rate with an uderbonnet gauge on a WRX I played with for a while and it worked fine , in hidsight probably wasted money the OE one would have been just as good in the boost range I was running in. (14.7 to 19 psi).
And I could have spent the money saved on fast women and hard liquor--or just wasted it.

Re: Which fuel pressure regulator?
Posted: Sun Nov 11, 2012 11:36 am
by sticky nicky
Yes, I do have an old Link piggback ECU which for some reason is not longer letting me adjust the boost, so I had a GFB manual boost controller put in which is apparently now leaking air?
My mechanic advised me to get a fuel pressure regulator as a safety backup for my fully rebuild engine. I dont know much about mechanics to after spending a sh*tload on the rebuild I figured this was just an insurance. Im running around 170rwhp but want to give it another dino run now all the works been done, and will prob get the manual boost control replaced as it is under 12 months old ans still under warranty.
My mechanic has now decided on a "Powerhouse" regulator, cost being around $250. I like to get forum member opinions as well as his, just to see what options I have.
Thanks guys

Re: Which fuel pressure regulator?
Posted: Sun Nov 11, 2012 12:10 pm
by sailaholic
Why not stop band aiding the system and install a new ecu. I think megasquirt can be had for about 600...which is probably not that much in the scheme of the rebuild.
Sent from my GT-I9100 using Tapatalk 2
Re: Which fuel pressure regulator?
Posted: Sun Nov 11, 2012 12:55 pm
by NitroDann
A rising rate fuel reg is a bandaid that isnt needed and should be avaioded seeing you have a real ecu.
get a new mechanic.
Also, works engineering reg's can be had for half that and come with a lifetime warranty I think.
Dann
Re: Which fuel pressure regulator?
Posted: Sun Nov 11, 2012 3:45 pm
by sticky nicky
OK, that makes sense....... so if I undate my ECU with a Megasqirt then the factory regulator is sufficient? I had planned to replace the ECU in the future but maybe I should do this sooner than later and put the $250 plus $100 installation hes going to charge me toward a new ECU.
Im currently running a fifth injector which I would get rid of and run 4 bigger ones. Can someone give me a rough cost to do this(and steer me to suitable injectors/megasquirt ) . Also cost of installation and tune, would it just take an hour or so on the dino?
cheers guys
Re: Which fuel pressure regulator?
Posted: Sun Nov 11, 2012 10:19 pm
by Tedsmx5
NitroDann wrote:A rising rate fuel reg is a bandaid that isnt needed and should be avaioded seeing you have a real ecu.
get a new mechanic.
Also, works engineering reg's can be had for half that and come with a lifetime warranty I think.
Dann
I agree with Dann, here is my install of a works engineering regulator. Looks good and has performed flawlessly

.
Ted

Re: Which fuel pressure regulator?
Posted: Mon Nov 12, 2012 11:02 am
by toppertee
sticky nicky wrote:OK, that makes sense....... so if I undate my ECU with a Megasqirt then the factory regulator is sufficient? I had planned to replace the ECU in the future but maybe I should do this sooner than later and put the $250 plus $100 installation hes going to charge me toward a new ECU.
Im currently running a fifth injector which I would get rid of and run 4 bigger ones. Can someone give me a rough cost to do this(and steer me to suitable injectors/megasquirt ) . Also cost of installation and tune, would it just take an hour or so on the dino?
cheers guys
Hi Nicky
You seem like a really nice person.
But reading your posts, you really don't know what you are doing.
Please spend a good couple of weeks over at miata turbo and just read.
The DIY treads and garage section and see how they set there cars up.
I think you going near a ms ecu would be a really bad idea unless someone is going to hold your hand through the install.
I'm not trying to be rude, but your lack of knowage is really holding you back.
Read and read again over at MT and read again, don't post!
Good luck with the build.
Cheers
Re: Which fuel pressure regulator?
Posted: Tue Nov 13, 2012 1:28 am
by sticky nicky
I know the basics, and that is I want a new ECU and 4 injectors. I really dont want to read and read forums on turbo mx5 as I dont want to know the ins and outs of every aspect of the subject. When I get the ECU and injectors I will be taking it to a tuning workshop to get it installed and tuned by professionals as stated in my previous post.
Most posts in this section are people asking advice on problems they have, I guess if they read and researched more they would find the answers too.
Im sure there are people on this forum with turbo set ups and I just wondered what ECU and injectors they were running.
Thats just my opinion, as you have given yours.
Cheers
Re: Which fuel pressure regulator?
Posted: Tue Nov 13, 2012 11:56 am
by hks_kansei
I think Topper was meaning more to learn the basics so that you at least can make an educated decision rather than simply say to the mechanic "a forum said it's good, do that"
There have been horror stories of people who aren't very mechanically minded who've had only half knowledge.
http://forums.audiworld.com/showthread.php?p=1508308
Re: Which fuel pressure regulator?
Posted: Tue Nov 13, 2012 3:31 pm
by toppertee
sticky nicky wrote:I know the basics
Of course you do that's why your on here asking about a fuel reg.
Good luck with your build!
Cheers.
Re: Which fuel pressure regulator?
Posted: Wed Nov 14, 2012 6:54 am
by gslender
sticky nicky wrote:OK, that makes sense....... so if I undate my ECU with a Megasqirt then the factory regulator is sufficient? I had planned to replace the ECU in the future but maybe I should do this sooner than later and put the $250 plus $100 installation hes going to charge me toward a new ECU.
Im currently running a fifth injector which I would get rid of and run 4 bigger ones. Can someone give me a rough cost to do this(and steer me to suitable injectors/megasquirt ) . Also cost of installation and tune, would it just take an hour or so on the dino?
cheers guys
Megasquirt ms2 or DIYPNP is fine. Rx8 injectors yellow tops are a good complement.
You wont find a tuning shop familiar with ms2 so stop right there. You seem to be unwilling to learn so Megasquirt isn't probably for you.
Go find a mechanic/tune shop and just get them to install whatever they are comfortable with.... Be prepared to part ways with $2000 !
PS - people who willing to learn/read part ways with $800 and buy a ms2 setup etc.
G
Re: Which fuel pressure regulator?
Posted: Wed Nov 14, 2012 5:54 pm
by Sean
In all likelihood you dont need a new ECU or reg, maybe injectors...
What you need is someone who knows how to tune the ECU you have, fitting a megasquirt wont help unless you get someone who knows how to use them tuning it for you.
IF you need a new reg as others have said, works engineering are functional and fantastic value. I'd get a 1:1 rather than a rising rate though.