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S2 Nistune - Diy Tuning

Mr GTS4
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kjb_r33 Experienced

kjb_r33

Posted
Posted

anyone had a go at this??

dont have the cash atm to get it tuned, but would like alittle better fuel economy and response.

Cheers

curt

[/quote

Not advisable without a Wide band O2 sensor. They are available resonably cheap, i use a techedge one, very good for the money.

SMOKEYV35 Mentor

SMOKEYV35

Posted
Posted

dont understand why anyone would drop that sort of cash on an ecu, but then not want to spend on getting it tuned.

it costs 150 bucks an hour to get on a dyno - so you're probably looking at an hour an a half to get the stock map loaded and tweaked to take advantage of basic mods. or for the same money you could buy a wideband kit and have a go at doing some semi informed damage.

or you could skip the wideband, and do some likely damage and cost yourself much more in the long run, which is highly likely if you're aims are to improve response (ie, wind in more timing) and trim fuel (ie, lean out the mix)......both which are two of the main ingredients in a pre-detonation cocktail!

long story short - save a few bucks, get it to a tuner who knows what they're doing, and save yourself the heartache.

Mr GTS4 Mentor

Mr GTS4

Posted
  • Author
Posted

dont understand why anyone would drop that sort of cash on an ecu, but then not want to spend on getting it tuned. it costs 150 bucks an hour to get on a dyno - so you're probably looking at an hour an a half to get the stock map loaded and tweaked to take advantage of basic mods. or for the same money you could buy a wideband kit and have a go at doing some semi informed damage. or you could skip the wideband, and do some likely damage and cost yourself much more in the long run, which is highly likely if you're aims are to improve response (ie, wind in more timing) and trim fuel (ie, lean out the mix)......both which are two of the main ingredients in a pre-detonation cocktail!long story short - save a few bucks, get it to a tuner who knows what they're doing, and save yourself the heartache.

thanks for that. long story about the money situation but wont go there.

if i were stupid enough to damage something i would have tried it without asking everyones opinion. the biggest thing for me is my MRS drives it everyday and i can't really have it off the road for too long.

does anyone know of a tuner in Ipswich/brisbane area that will tune a nistune?

bubba Grand Master

bubba

Posted
Posted

If you screw up with amateur tuning your car will be off the road for a whole lot longer than a day or so at the tuners..

Basically, you need a wideband O2 sensor to make sure you don't lean it out too far and some sort of knock sensor to ensure you don't wind too much timing in.

Then, you're going to need lots of "private" road to tune on and it's going to take you a long time to find enough different conditions to hit every cell.

Oh, and you'd best learn the software pretty well before you start as like I said above, it's VERY easy to ACCIDENTALLY f**k something up and NOT NOTICE that you have f**ked it up until you melt a piston.

QWK32 Veteran

QWK32

Posted
Posted

wow. there's alot of scaremongering going on in here. don't get me wrong, i totaly agree with everyone that has said its easy to stuff things up if you don't know what your doing, or just taking a guess at a tune without the aid of a wideband. but with some basic tuning knowledge there is no reason why you cant safely do it yourself, a stockish setup with minimal mods like exhaust, FMIC and a little bit more boost is really only touching up the stock tune. its not like you jumping into the deep end with a blank map on a haltech, vipec, etc.

if your looking for better fuel economy and you(or you mrs) already drive around like a nanna i.e not going above 3-4000 rpm than you aren't going to get much better. its not until you start driving around with a bit of stick that the stock fuel maps start pumping it bucket loads of fuel. thats were the benfit is, high load area's of the fuel map.

the timing maps can be cleaned up a bit, there is a hole in the stock map at about 4500rpm that can be smoothed out. it is more noticable once you add a bit more boost as the hole is bigger on the last couple of rows on the map. feels like a flat/dip ion power. with a stockish setup theres no reason to fiddle with the timing map anymore than that, maybe add a little bit more down low for some pickup if you feel it needs it.

something to think about doing would be getting a M18 x 1.5mm bung welded onto your exhaust, just before the cat, so a wideband O2 can be hooked up. shouldnt cost that much for an exhaust place to do. also look at reading all the tuning guides on the nistune site to get a fair understanding of how the nistune works ie how load is worked out and the map relationships.

StealthX Veteran

StealthX

Posted
Posted

I've been tuning my EMS stinger myself, changed turbo, air temp and water temp maps, idle control etc. Fuel trims are not hard to do, just have to be careful.

I wouldn't suggest touching timing on the street because you can't find the mbt without a dyno to read power. Other than that it's pretty much guess work with a knock sensor.

Just pay a tuner to do a map then adjust it from there yourself when you need it :)

wolverine Grand Master

wolverine

Posted
Posted

i'd say you could trim the fuel map but i woudln't do the timing yourself without some form of knock sensing equipment

subscribed for more replies teehee.gif

How are you going to trim the fuel maps if you don't know where you are in the first place?

There is plenty of room to advance timing in the light load areas with relative safety but this isn't really what the OP asked.

If you want to change the fueling then you need a wideband but as long as the O2 sensor is working then the ecu will pull it back to stoich on steady throttle openings anyway.

The best way to save fuel is keep your foot light until you get it tuned.

pipster11 Grand Master

pipster11

Posted
Posted

How are you going to trim the fuel maps if you don't know where you are in the first place?

There is plenty of room to advance timing in the light load areas with relative safety but this isn't really what the OP asked.

If you want to change the fueling then you need a wideband but as long as the O2 sensor is working then the ecu will pull it back to stoich on steady throttle openings anyway.

The best way to save fuel is keep your foot light until you get it tuned.

oops, meant to say with a wideband pinch.gif

with wideband, trim fuel but don't touch timing

lilcrash Veteran

lilcrash

Posted
Posted

does anyone know of a tuner in Ipswich/brisbane area that will tune a nistune?

Mercury motorsport and Gavin woods autech both have 4wd dyno's. I'm goin to one of those to get my nistune installed and tuned.

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