INjectors

[nissan_slider]

I'm building a ka-t, the question I have is, will q45 injectors work with my stock fuel rail and what cc's are they. The injectors I have are grey. Thanks for the help.

[virus77]

being a v8 I doubt the q45 injectors are any bigger then stock but im not positive... I'd say get some sr20 injectors(370cc) if you are going for a super low boost setup or some USDM WRX STI injectors, they;re 525 cc.

[DroptopDrifting]

they are 370cc side feed high impedence. the only ones that will drop right in though are from a 93-96 q45. if you take a pic i can tell you whether they will or not fit. if it isnt outta those years, then they will not fit. in that case, buy my sr injectors

[hannibal]

^ Yep.

Do a search. There was a thread with pics about 2-3 weeks ago...

[mixeds14]

someone correct me if im wrong but arent the clips diffrent also. i bought some thinking they would fit but afther i try to plug one of them in to the harness, well it was diffrent so i dint even bother tryin to see if theywould fit. i just bought some sr ones................

[sorrowfulkiller]

I would suggest the AMS Fuel system... it comes with fpr, all the lines, injectors sized to your choice... 682cc/min is the highest high impendance injector that you can get through them, you can also get a walbro 255 l/hr fuel pump included with the kit.

Sadly they do not come with a FPR that is a higher ratio than 1:1Seems like a good bargain for anyone that is using engine management though

or if you are just looking for injectors then ams also sells 682cc's for 275 with pigtails

[480sx]

AMS fuel system is way overpriced, as is EVERYTHING you can buy from them. AMS as a company sucks, although they do good fabrication work and have a good race team. They have personally fvked the 240 community in a big way and offered no concessions, or apologies.

Jesus, dont give advice when you yourself have so little knowledge about what the fvk your talking about. You dont have a 240 or any real experience from what i can tell. Sorry, im not going to sugar coat it for you, you'll live. This is a tech forum. Nuf said.

Why would you ever want a FPR with a higher rate than 1:1..? Sorry, this question is actually rhetorical, although i am curious as to what you read that made you make such a bizarre statement.

[sorrowfulkiller]

AMS fuel system is way overpriced, as is EVERYTHING you can buy from them. AMS as a company sucks, although they do good fabrication work and have a good race team. They have personally fvked the 240 community in a big way and offered no concessions, or apologies.

Jesus, dont give advice when you yourself have so little knowledge about what the fvk your talking about. You dont have a 240 or any real experience from what i can tell. Sorry, im not going to sugar coat it for you, you'll live. This is a tech forum. Nuf said.

Why would you ever want a FPR with a higher rate than 1:1..? Sorry, this question is actually rhetorical, although i am curious as to what you read that made you make such a bizarre statement.

True I have no real experience with 240's however I do have real world tuning experience with other cars, namely subarus and evos. The FPR thing I'm speaking of is because a lot of people call FPR's with higher ratios FMU's, I don't because its still essentially a Fuel pressure regulator.... not a "Fuel management unit" I would specifically only call an ecu or possibly an AFC a FMU, not a friggin rising rate fuel pressure regulator.

I'll say this though, where else can you get a brand name fuel system that includes... lines, fpr, injectors up to 1000cc injectors, a walbro fuel pump, fuel rail, and fuel gauge for 600-820 (depending on ruber or steel braided line, fuel pump or not, and injector resistor pack or not)

For future reference how have they f***ed the 240sx community?

[480sx]

True I have no real experience with 240's however I do have real world tuning experience with other cars, namely subarus and evos.

Sorry, again, to bust your balls but dude, you dont know ish from what you have displayed so far.

The FPR thing I'm speaking of is because a lot of people call FPR's with higher ratios FMU's, I don't because its still essentially a Fuel pressure regulator....

Lol, you gona redefine the industry and make simple things complicated?

They call them RRFPR's if you want to get technical. They are NOT fprs, although they do regulate fuel pressure. A FPR is a stand alone unit that keeps fuel pressure at a steady psi. A RRFPR is a piggy back system to a normal FPR to act as a Fuel Management Unit for boosted cars. That is why they are 'correctly' called FMU's instead of FPR's.

A FPR designed for boost is called a boost referenced FPR. For every one psi of boost the IM sees, it raises fuel pressure by one. This is to compensate for every one psi of positive pressure that is acting against the injector tips, essentially making it flow as if the injectors were operating at one psi less than the fuel in the rail.

I'll say this though, where else can you get a brand name fuel system that includes... lines, fpr, injectors up to 1000cc injectors, a walbro fuel pump, fuel rail, and fuel gauge for 600-820 (depending on ruber or steel braided line, fuel pump or not, and injector resistor pack or not)

Fuel rail is 100 bucks. Pump is 100. Injectors are all dependent on what you go for, i always go for Sard/Denso because they are flawless. The injectors they sell in that kit arnt really that great IMO although i dont know that much about RC other than what i have heard. In addition, they used to make a really cool 240 fuel rail that was CNC milled out, anodized and nice looking, that one looks like generic crap with their badge engraved into it. All the stuff in that kit looks cheap.

Bottom line is this. To AMS, the 240 world is second rate customers with no substantial cash. There is no reason for them to develop or even sell nice stuff for the 240 because they have the evo market by the balls, and the scoob market pretty well too. They USED(2-3 years ago) to be awesome for us, but they realized we wernt as profitable as the other communities were for them and moved on.

For future reference how have they f***ed the 240sx community?

I organized a group buy to bring their bottom mount equal length manifold back into production. 10 people paid on average a 600 dollar deposit February first. A whole lot of bs and 8 months later, we got our manifolds. People waited 6+ months with their car sitting because of AMS. About this time they stopped supporting the Nico community, as well as the other 240 communities sites. Ivan from AMS came onto the group buy thread after our goto guy from AMS abandoned us and the thread for 3-4 months and said exactly what iv already said. That we were second rate customers basically, gotta follow the money, blah blah blah. The 6 page group buy thread is on the .Org still with nearly 14000 views on a site with an 'active' community of about 500 people.

[sorrowfulkiller]

Sorry, again, to bust your balls but dude, you dont know ish from what you have displayed so far.

I've said before, I have little knowledge when it comes to turbo's outside of the subie/evo area, so that aspect I understand, tuning on the other hand I know a great deal about.

Quote »Lol, you gona redefine the industry and make simple things complicated?

They call them RRFPR's if you want to get technical. They are NOT fprs, although they do regulate fuel pressure. A FPR is a stand alone unit that keeps fuel pressure at a steady psi. A RRFPR is a piggy back system to a normal FPR to act as a Fuel Management Unit for boosted cars. That is why they are 'correctly' called FMU's instead of FPR's.

A FPR designed for boost is called a boost referenced FPR. For every one psi of boost the IM sees, it raises fuel pressure by one. This is to compensate for every one psi of positive pressure that is acting against the injector tips, essentially making it flow as if the injectors were operating at one psi less than the fuel in the rail. [/quote] All I already know... I just don't like calling FMU's an FMU because its a "handicap" tool for real ecu tuning, not an actual fuel management in any sense of the idea.

Quote »Fuel rail is 100 bucks. Pump is 100. Injectors are all dependent on what you go for, i always go for Sard/Denso because they are flawless. The injectors they sell in that kit arnt really that great IMO although i dont know that much about RC other than what i have heard. In addition, they used to make a really cool 240 fuel rail that was CNC milled out, anodized and nice looking, that one looks like generic crap with their badge engraved into it. All the stuff in that kit looks cheap.[/quote]The only thing I could say is cheap in the kit is the fuel rail.... which doesn't need to look pretty to function correctly. The FPR they supply should be sufficient, any injectors for a 240 are going to become extremely expensive past 600cc and with this kit it is a great alternative to spending 600-900 bucks on large injectors. RC Engineering make GREAT injectors, I would personally go with only them or Sard/Denso because from what I've seen and what others have told me the numbers they supply you to use them correctly with your application have always been spot on (injector dead time or injector latency, whatever you wanna call it)

Quote »Bottom line is this. To AMS, the 240 world is second rate customers with no substantial cash. There is no reason for them to develop or even sell nice stuff for the 240 because they have the evo market by the balls, and the scoob market pretty well too. They USED(2-3 years ago) to be awesome for us, but they realized we wernt as profitable as the other communities were for them and moved on.

I organized a group buy to bring their bottom mount equal length manifold back into production. 10 people paid on average a 600 dollar deposit February first. A whole lot of bs and 8 months later, we got our manifolds. People waited 6+ months with their car sitting because of AMS. About this time they stopped supporting the Nico community, as well as the other 240 communities sites. Ivan from AMS came onto the group buy thread after our goto guy from AMS abandoned us and the thread for 3-4 months and said exactly what iv already said. That we were second rate customers basically, gotta follow the money, blah blah blah. The 6 page group buy thread is on the .Org still with nearly 14000 views on a site with an 'active' community of about 500 people.[/quote]I could see how that could be a giant pain in the a**, however with something like a fuel system with most parts being universal beside the fuel rail which for them is very cheap to produce... its really not a large issue.

BTW AMS has not been into the subie market for awhile.... they still make parts but I know of NO ONE nor heard of anyone that uses anything from them for subies.

[480sx]

tuning on the other hand I know a great deal about.

I know a great deal about astrophysics, as long as there are absolutely no follow up questions.

I just don't like calling FMU's an FMU because its a "handicap" tool for real ecu tuning, not an actual fuel management in any sense of the idea.

FMU's were used reliably for years before advanced EFI systems and chipped ecus became readily available. They work fine. They are the greatest way to do a budget, simple, first time setup.

The hell are you talking about, not an actual fuel management unit?

Definition of Fuel management unit = Something that manages your fuel system.

RRFPR = A device that manages your fuel system so it is boost capable.

You dont hear people calling an ECU or a SAFC a FMU. Sooo, what exactly would you call a FMU?

[sorrowfulkiller]

ha ha, yeah I suppose... but using an FMU is like going back to the days of carburation because you really can't fine tune it, like you said though its a great way for getting a budget start up setup, but if you really want to make good power it is not the "best" way to go.

[DroptopDrifting]

i call them piggybacks

and you can piece together better quality parts for the same or less money than the AMS kit costs btw. not to mention out of principal i wouldn't buy from ams no more. 2-3 yrs ago if you had asked me, i'd say they're #1. not these days. it's almost like they've completely ditched us and moved on, they just continue to offer parts for us because they've already spent the time fabricating them, why not mass produce em to still make a quick buck. it's like the weed dealer who usually only deals with lb's but will still sell you an 1/8 because money is money. haha(lb's metaphorically standing for evo's and the 1/8 bein 240 parts)

[sorrowfulkiller]

i call them piggybacks

and you can piece together better quality parts for the same or less money than the AMS kit costs btw.

lmao about the piggybackIt's hard to produce a fuel system containing the same items when you start going over 600cc for less than the AMS fuel system though, especially if you are trying to get 1000cc high impendence (why anyone would is beyond me)

[480sx]

ha ha, yeah I suppose... but using an FMU is like going back to the days of carburation because you really can't fine tune it, like you said though its a great way for getting a budget start up setup, but if you really want to make good power it is not the "best" way to go.

SAFC is for fine tuning if you wana go 'baller' fmu setup. SAFC2 + 8:1 FMU + WBO2 system with data logging capabilities at meh.. 7-8 psi is great. Thats how im breaking in my fresh motor. Stock injectors, stock ecu, with all that other ish. Gona try to see how low i can get this 44mm tial, ams manifold and s258 with a .68 hotside to boost. Id love it if i could hold, 4-5 psi max, would be perfect.

[sorrowfulkiller]

SAFC is for fine tuning if you wana go 'baller' fmu setup. SAFC2 + 8:1 FMU + WBO2 system with data logging capabilities at meh.. 7-8 psi is great. Thats how im breaking in my fresh motor. Stock injectors, stock ecu, with all that other ish. Gona try to see how low i can get this 44mm tial, ams manifold and s258 with a .68 hotside to boost. Id love it if i could hold, 4-5 psi max, would be perfect.

I completely agree man, straight FMU I think is a no-no, fmu + any other sort of engine management = great idea

[DroptopDrifting]

dont forget a btm on that setup, personally im just gettin my ecu tuned to what i got, mostly cuz i dont wanna deal with timing and plus i already have an msd sci-l w/two step and a blaster pack, i dont wanna swap it for a msd btm. and then usin the safc2/wideband to fine tune depending on daily weather, make sure i dont lean out. and as for fuel system, i got a top feed fuel rail for $50 thats actually pretty good quality, someone on here posted the link like 2 yrs ago in a thread im sure i can find it if i search for it. i got 72lb injectors with pigtails i got for a good price (overstock) of $175, aeromotive fpr for $150, walbro pump for $99, SS fuel lines and clamps, bolts, and fittings for $38. so that is a total of a little over $500. the ams kit is $600 and does not include the fuel pump nor SS lines. basically, i spent $400 for what they offer for $600 so yeah...cheaper to piece it together if you ask me.

edit: i also have a 300zxtt fuel filter for like $20, guess that's part of the fuel system too...

[DroptopDrifting]

oh yeah and OP, you started this thread and have yet to reply or comment even once lol. what's the deal with that?

[nissan_slider]

I'm having trouble with the iserve thing. Ill email the pic to you.

AND GUYS IF YOU DON'T HAVE ANY ADVICE TO GIVE STAY OFF. THANKS.

[DroptopDrifting]

imageshack makes it nice and simple. check it out.

[sorrowfulkiller]

I'm having trouble with the iserve thing. Ill email the pic to you.

AND GUYS IF YOU DON'T HAVE ANY ADVICE TO GIVE STAY OFF. THANKS.

he he, sorry, my fault... it kinda escalated >_>

[480sx]

AND GUYS IF YOU DON'T HAVE ANY ADVICE TO GIVE STAY OFF. THANKS.

gthehello?

We answered your question, and every bit of information you could possibly want about the injectors are in the stickied post at the top of this forum. Dont ask to be spoon fed then spit it back up at us after we do.