Mines ECU question

[plainzwalker]

Tried a search, only found a one place to buy them (RHDJapan) but they don't have any listed. So does anyone know who might sell these? Or know where I can do some research on 240sx applications like benefits/short comings?

Just curious, after reading a couple articles in a magazine about them.

Thanks

[SpeedRacer1]

They are made per customer requests in Japan, and have good tuning. The problem with them is that level of tuning is unknown to buyers generally.

I wouldnt waste time with tuned ECU's unless it came with your engine because you never know what the ECU has been tuned for.

[plainzwalker]

Ah, that would explain why they are so hard to come by then. Thanks for the info, I was curious since I couldn't much info on here about them.

Guess thats the end of this thread then. Quick and simple

[redtop91]

I am running a Mine's ECU. Very true about the unknown part. The main drawback is that they are tuned for 100 octane. They are pretty unimpressive on pump but are a different beast on race.

[plainzwalker]

I am running a Mine's ECU. Very true about the unknown part. The main drawback is that they are tuned for 100 octane. They are pretty unimpressive on pump but are a different beast on race.

I really don't see myself making this car a race only car. Even if its not a daily driver. It was just an idea thats all. I think I'll stick with an AEM system or something when the time comes to get a ECU. But that won't be for a while now.

[S13FASTBACKSR]

enthalpy ftw imo

[plainzwalker]

enthalpy ftw imo

I have heard/read a lot of good stuff about enthalpy, but I think I would run into the same problem in the end. It's all custom tuned, and if I were to do more engine mods after it was tuned I would need to get it redone. Unless I'm utterly confused and missing something, which has happened before (natural blond).

[S13FASTBACKSR]

what are going to be your mods when you have your ecu reflashed for the first time? bigger injectors, turbo? ive talked to chris and scott at enthalpy numerous times..things that need to be tuned for are more fuel than and more air..if you put bigger injectors on you are going to have to have it retuned..say you have a t25 and you go to a t28 you wont need to have it tuned for that..but anything bigger than a t28 i would recommend a tune..a bigger maf, fuel pump..those need to be tuned for..bigger cams as well..but when you go and put things on like a flywheel or fpr or pulleys you dont have to keep getting it retuned..basically if you just get a setup that you will be happy with the first time and have a tune for that...you will be set..and once you are a customer of enthalpy another reflash is only 125 bucks

[plainzwalker]

what are going to be your mods when you have your ecu reflashed for the first time? bigger injectors, turbo? ive talked to chris and scott at enthalpy numerous times..things that need to be tuned for are more fuel than and more air..if you put bigger injectors on you are going to have to have it retuned..say you have a t25 and you go to a t28 you wont need to have it tuned for that..but anything bigger than a t28 i would recommend a tune..a bigger maf, fuel pump..those need to be tuned for..bigger cams as well..but when you go and put things on like a flywheel or fpr or pulleys you dont have to keep getting it retuned..basically if you just get a setup that you will be happy with the first time and have a tune for that...you will be set..and once you are a customer of enthalpy another reflash is only 125 bucks

Once my engine upgrades begin, it will start with injectors, maf (if i dont already get it by then), and turbo and supporting mods (looking at 2871 i believe, cant remember off the top of my head) for the first upgrade. After that will be cams (along with head gasket), then probably work on the lifters. So that would be 2 different tunings.

I don't want to get ahead of myself, I was just looking at the Mines setup and wanted to know a little more about it. I like being able to tinker with stuff too, especially when I start to learn more about the car/engine. Since I have no set time line for when I will be doing upgrades (unless they deploy me and I make all that mad tax free cash) I'm sure new techniques will be developed and new electronics will come out (or not if the market moves else where and support for the 240/SR20det drops off).

Thank you for helping me understand the whole tuning thing a little more. It does make more sense to me now. Just curious though, you said with the fuel pump and injectors you have to get it tuned, it this because of the injectors? I got the walboro pump, is there complications with using this pump and not tuning the ECU to utilize this? Or am I just reading too far into it?

[S13FASTBACKSR]

im sorry i didnt mean to say the fuel pump..a 255lph is fine on the stock sr ecu.. i am not sure if that is because the factory size of the 180sx fuel pumps are that size or not..therefore the factory sr ecu is already tuned for it

[plainzwalker]

im sorry i didnt mean to say the fuel pump..a 255lph is fine on the stock sr ecu.. i am not sure if that is because the factory size of the 180sx fuel pumps are that size or not..therefore the factory sr ecu is already tuned for it

Ahh okay, I get confused easily on some things. How about aftermarket FPR? Is that something that needs tuning to fully utilize or is that just a tweakable bolt on?

[SpeedRacer1]

You dont need to tune or retune for an adjustable fpr. Just set it to the right pressure.

[S13FASTBACKSR]

correct aftermarket fpr dont require tunes..from what ive read megan racing fpr are garbage and sards are great..i know sard is great because i myself have one but i have a p.o.s. gauge..its a b&m non liquid filled gauge and it recently stopped reading the correct fuel pressure..it was stuck on 80 and now its stuck on 50 or so..get yourself a liquid filled gauge and you will be happy as long as you have it

[plainzwalker]

correct aftermarket fpr dont require tunes..from what ive read megan racing fpr are garbage and sards are great..i know sard is great because i myself have one but i have a p.o.s. gauge..its a b&m non liquid filled gauge and it recently stopped reading the correct fuel pressure..it was stuck on 80 and now its stuck on 50 or so..get yourself a liquid filled gauge and you will be happy as long as you have it

I will definitely keep that in mind once I start getting gauges and need a FPR.. I think that will be a ways off though. Unless I hit the lottery, or some other financial luck comes my way. I want to build up the drive train and suspension before I really start with the engine upgrades and power adders.

Thanks for all the great information, I learned more from this thread then I thought I would.

[SpeedRacer1]

Just get a fuel pressure gauge from a friend or a cheap one, then set it and forget it. No need to keep the gauge once it is set.

[S13FASTBACKSR]

true that ..the reason i keep mine is because i dont have a buddy to let me borrow it..therefore i bought a gauge and probably wont make my money back..so i keep it just incase and not to mention it looks cool when the hood is popped

[otterman]

it looks cool when the hood is popped

Don't lie, thats the ONLY reason you got it...

[plainzwalker]

k...one last question about FPR...is there really a benefit to them on the SR20? Or are they more for built engines?

[S13FASTBACKSR]

Don't lie, thats the ONLY reason you got it...

lol i knew it was coming....they arent really any need for them on the stock setup..i went to 550cc injectors and a t28 and if i try to run at the stock fsm fuel pressure my car wont drive..maybe someone else on here has that upgrade on the stock fpr and can let us know ..but it would be wierd that they can run stock fuel pressure and i cant

[otterman]

Howd you figurewhat to set it at? I just guess and keep changing until it ran right?

[S13FASTBACKSR]

correct ..thats what i had to do..set it to about 45psi and got in the car and gave it gas and the car shut off because the fuel pressure was not enough..so i went up in 2psi increments everytime..eventually it just misfired at about 2krpm to 3krpm so i brought it up some more..then it would misfire at about 5-5500krpm..now its set up there pretty high..about 52psi..im sure somebody is gonna read this and jump down my throat about having my fuel pressure that high and that my car should run right at stock fuel pressure..but then again idk if this happens to everybody when they upgrade. i have never heard of it happening to anybody else

[otterman]

For the sard FPR do you need one of those fittings to get it to fit on your fuel rail (assuming its an SR with stock fuel rail lol)

[S13FASTBACKSR]

nope..no modifications needed for the fpr to fit..when you take the factory fpr off you put on an adaptor that has a nipple coming off. thats where you hook up your hose and then you mount the fpr wherever you would like, mine is towards the back of my intake mani. the only modification i needed to do was re-thread the hole for the gauge because the gauges threads did not match the fpr threads.