Fuel Pressure Regulators

[Sean]

I've been thinking I might need an upgraded Fuel pressure regulator when I do my stroker, that way I can tune it correctly.

Any ideas here? There's a couple I've found, included Ireland Engineerings one with the guage, Bavarian Autosport (no guage). I've also run across the one that Flying Brick Performance has.

http://flyingbrickperformance.com/cart/index.php?main_page=product_info&products_id=120

Anyone know how good that FPR is?

Do I really need an adjustable one, or could I just get a new 3.0 Bar FPR and call it good?

[MrK]

I can vouch for the Bavauto one, it seems VERY well-built, and fits the fuel rail like a glove with no modifications necessary.

I think most ppl here will tell you to throw in a new 3 bar FPR and call it a day. My 2.7i stroker is doing just fine without the AFPR. (I'm waiting for a fuel pressure guage before I reinstall my Bavauto afpr)

Just my 0.02

[Sean]

I can vouch for the Bavauto one, it seems VERY well-built, and fits the fuel rail like a glove with no modifications necessary.

I think most ppl here will tell you to throw in a new 3 bar FPR and call it a day. My 2.7i stroker is doing just fine without the AFPR. (I'm waiting for a fuel pressure guage before I reinstall my Bavauto afpr)

Just my 0.02

That's what I'm leaning towards... (hehe..no pun intended). I'll want to make sure I'm not running lean though - but I guess the ECU is supposed to take care of that? I'm going to be running S50 injectors with my motor when its all said and done.

[MrK]

Well, with an o2 sensor to keep the engine in check at part-throttle, and increased-flow injectors to assure you don't go lean, I don't see why you'd feel the need for an AFPR.

[Sean]

Well, with an o2 sensor to keep the engine in check at part-throttle, and increased-flow injectors to assure you don't go lean, I don't see why you'd feel the need for an AFPR.

That's what I was thinking. With a good O2 sensor (it'll be brand new, actually) and 19#ers...or are the S50 ones 24#? I don't remember - but MORE than enough possibility with my injectors, I think my ECU would handle it fine.

So...I'll probably head that way. Any opinions on other AFPR anyways?

Thanks for the comment, MrK! :)

[Ball325]

id like to know the opinion on the flying brick afpr seeing as its a 1/4 of the price of the others. the BavAuto doesnt have a gauge and it says its adjustable but it also says its rising rate. Im under the impression there is a difference between adjustable and rising rate is there? if so is it both or what. IM confused dont know much about these

[nando]

I'm leaning towards the IE AFPR, it has a gauge and it mounts in the stock location. looks really nice too! :)

btw, isn't the stock 325i FPR already 3 bar?

[Ball325]

thats what i thought. Im leaning more towards the IE one because ive heard bad things about BMP. Really once i get the injectors the only thing keeping my from putting it all in is a dyno day and well alot of machine work to make my throttle body well bigger

[silverfbimmer]

Hey i am doing basically all the same stuff to my car! I have 19# injectors an a M30 AFM. I also have a AFPR. I am also waiting to hear what everyone says about the AFPR, because what I thought I caught earlier was that it really is not that necessary because the ECU makes up for the higher flow.

[Ball325]

the ecu might make up for it but the AFPR is like $200, do you know how much it costs to replace a burnt up valve train and possibly pistons and new rings? just take a guess.

I know one thing is for sure my car will not start until its on a dyno where it can be monitored by someone who knows whats going on. and it will be tuned properly from there. i say AFPR needed or not is a good idea.

[nando]

I know one thing is for sure my car will not start until its on a dyno where it can be monitored by someone who knows whats going on. and it will be tuned properly from there. i say AFPR needed or not is a good idea.

that is dumb, you can't dyno an engine that isn't broken in, and you don't want to bring an engine to a dyno that is running poorly or is in a bad state of tune. you're just going to end up spending a bunch of money and wasting the dyno operators time. start it up, break it in, get it running properly and then bring it to a dyno for tuning.

[Ball325]

that is dumb? you serious? engines get broken in on the dyno all the time and my engine is already broken in. i will hardly be wasting anyones time. Its not that expensive and no better place to get it running right than a dyno thats why they exsist. A Dyno shop surrounded by people who know how to diagnose problems and fix them, i cant think of a better place to be when my car isnt running right. Maybe you should know what your talking about before you try to flame someone....

[nando]

I've broken in engines before, I don't need to prove anything to you. go ahead and waste money on stuff you should know how to do yourself, if you are truly in the know.

[AndrewBird]

I've broken in engines before, I don't need to prove anything to you. go ahead and waste money on stuff you should know how to do yourself, if you are truly in the know.

x10

[Ball325]

i do know how to do it my sefl but it takes no time at all and we can get it right the first time. and the dyno runs are $50 for me and another $50 for the chip they burn. it pays to be a very good friend of the dyno operator.