Thread: sr20ve ecu setup

So I've been doing some searching and reading to find out how to go about tuning my sr20ve powered 200sx se-r. I have a couple questions about the entire process and what the best direction to go in would be.

I have the stock sr20de ecu on the car right now. Fuel is ostensibly being taken care of on the top end with an s-afc II unit. I'd like this to become part of the ECU since i'm not really planning on a turbo, and i'd really like to take that damned thing out of my car (my friends are terrible and knocked it to the floor while proceeding to step on it and make adjustments i can not comprehend)

Reading about ECU's I see that there are a few options:

pre flashed JWT ecu
(stock b14?) ecu with nistune
calum ecu
(something here about tunercode, I don't really get that yet.)

It seems like flashing an ecu whenever you need to tune is a bit ridculous, so i'd like to rule out the JWT ecu if that is the case. nistune does not work on ve ecu's, given a difference in a certain connector. calum is out of business. tunercode, i'm not sure what that even gets me at this point.

first question is: can i use the stock de ecu i have now, in addition to nistune for a decent ecu/tuning setup. given that the stock ve ecu does not work with nistune, it seems like i can use the de ecu and tune the mappings more appropriately with nistune, without the need for any of the stock ve.

second: how would that effect vvl? right now this is wired in alternately for the car so it seems to me that the vvl part of the ecu can be ignored and i can just use a greddy mss switch or an msd digital window. this isn't unattactive to me, but i would like to know if it works this way.

I got the car with the VE swapped in and i'm learning as I go here. I've tried to search as much as I can but the bits and pieces aren't forming a final picture for me, and it's something i'd like to take care of soon. I'm taking the car in for a new wiring job and i'm wondering if I should have the guy put the rest of this together for me while I am there. I'd really like to be able to drive my car confidently. I don't have a wideband sensor yet, but obviously this is definitely on the agenda for proper tuning.

welcome to the forum, does the car currently run? what are you getting rewired?

Yeah the car was running great, I've put about a thousand miles on it so far how it is and I haven't really had a problem with it. The wiring in the engine bay is a bit of a hack job so I want to get it cleaned up. The rest of these concerns originated from the unplanned safc adjustment, and I feel like I could be in a really bad position. I just want to get the car into good shape for daily driving, before i begin any other work.

I've ordered a wideband so i can street tune my fuel for now. I think I've settled on the idea of a nistune equipped ecu. I'm hoping to just purchase a pre built ecu because i am not so great with the soldering. does anyone know where i can get a pre built ecu?

http://www.sr20-forum.com/group-buys/43272-ca-nistune-real-time-board-group-buy-2-a.html

^The guy you want to get in touch with runs this group buy. You should be able to get one right away, but not at the group buy price because this one just ended. What year is your 200sx SE-R? Welcome to the forum.

my 200sx is a 95. I like the idea of going with the link in that last post, but i don't really want to mail my current ecu since it's my daily driver. i haven't really been able to pinpoint the options i have for another ecu to send in. would i be best off just finding another 95 se-r ecu or do i have options?

Find a 95 200sx SE-R ECU and send that in. That would be your best option since the car you have is your daily.

Welcome to the forum.You are in my neck of the woods.
There arent many FWD sr guys around,so if you need anything ,hit me up anytime.
352-516-7900
maybe I can help you get your wiring straightened out.

as for the ECU,the nistune group guy is a good option as suggested.That way to can have them put a base map on it for you .That will buy you some time to learn to tune it yourself if you want.
If not ,you at least have a pretty good running car otherwise..

How are you switching the cams now??

I'm in need of a tune for my VE as well. I own a 97 SE-R. My solenoids just quit working as of yesterday though. I'm using a Greddy MSS. The MSS is getting power and reading RPM. So I'm going to test the solenoids and retrace the wiring to troubleshoot the problem. I was considering a JWT tune but its just so expensive. I would like to look into this Nistune some more.

my vvl is actually wired to my horn, so it doesn't get used. that's how i got the car.

there is a msd window switch in the car right now, but it is not connected to the vvl.

i noticed too late that my safc was re spliced into its own harness and it was coming apart from the twisted connections wrapped in electrical tape. i'm pretty sure i lost ground and the unit was toast. the car shut off on my while i was driving.

i picked up the safc to make sure the settings were right and the unit is stuck in freak out mode. (i am going to video it later for humor). it randomly selects menus and flashes through different screens. i had lost connection on one of the ground wires, so i'm pretty sure it's toast.

i should have a new safc and wideband in the next couple of days. eggman, i would love to take you up on wiring help, so i might send you a text sometime this week.