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Re: zs 180 remap resualts

Was that mapped for 99ron ?

How much extra IGN Adv could be dialed in ?

 

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The whole "i run it 1 week on 99ron and the next week on 95ron" is baffling.

No point to it at all, if it was running 100% 99ron and mapped for this, then more ignition advance could have been mapped in, and more ignition advance is good (until it dets, but this is why you run a better ron petrol)

 

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You know, i mapped my last turbo car myself (via a Apexi PFC ecu), so i kinda know a bit about it, and one thing that i have always felt from my brief stint in the world of the ZS, is that i suspect that many of the "mappers" that do these cars, dont do the timing at all.

That probably goes for a lot of "mappers" as most i have seen on other "none turbo" type forums, just seam to download premade generic maps and flash them over, while poncing about on a laptop to make it seam "technical"

I see a totally different type of posting style from people who i know actually map cars "properly" in the jap turbo world, to what i see posted about on the average NASP forum.

I seriously think that regarding the ZS, 9 out of 10 times, all they do is tweak the fueling map and possibly have a minor mess about with the VIS valves.

Which should not take long at all once the wideband is hooked up, seriously, it took me about an hour to make my first ever fuel map, starting with a stock base map supplied with the ecu, it was stupidly easy, fire up wideband and logging software, drive down road with laptop running, log fueling for each zone, pull over, adjust cells in fuel map to hit target lambda, drive down road again to double check, jobs a gooden. Sorting the ignition map took me a lot longer as i had to be double cautious regarding det.

I have tried in vain to find somebody who has had a zs180 mapped for a higher ron fuel, and never found one, i suspect these engines could do with a more aggressive ignition advance.

Now NASP is never going to have such wildly different variables as mapping a turbo car, especially when you start changing turbos, so a lot of time can be saved on that front.

But i just can not see a full new map done on a car in under 2 hours, a tweak yeah, adjusting the fuel map yeah, but changing the ign map, checking for det at various loads/throttle positions = nope.

 

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I can remember when i built my 2.5 impreza, and the first map i did, i was super conservative with the ignition timing, i had to be, nobody would "teach me" what i was supposed to do, so it was all trial and error.

I put it on my mates rolling road to give me a ball park figure, before i started messing with the timing, and if i remember rightly, it put out 300bhp and 350lbft.

Still i asked the "proper mappers" for some tips, but they were reluctant to hand over the secrets, so i basically went about my way like this.

My drive to work is up a dual carriage way, at the beginning of it is a roundabout with lights, so i set off for work earlier than normal when the roads were dead and set the logging software to run from the traffic lights

BWAAAAARRRRPPPP up the road, it is possible (well it was for me) to easily hit 140/150 before i had to turn off at work, so you can get pretty decent logs, i would get to work, study them, and make some rough guesstimate changes to the map, which i would test on the way home, i did this for weeks LOL

I had people telling me that their apexi knock control reading was around 20 while on boost so i made sure mine was around 10/15, if my knock readings ever went above 20 in a zone, i dialed out 2 degrees in that section, eventually i was pretty happy that the car was safe, i then "smoothed" the map cell transitions out, and did the same with the fuel map.

I ran the car like this for 6 months, damn the thing was fast, i had managed to get an average of 10 degrees extra Ignition advance on it throughout most of the map, the difference was huge, it went from a smooth experience, to what felt like a high blood pressure victim, the difference even adding a few degrees with noticeable, really interesting to feel the car respond differently as the timing was added back in.

My mate was holding a rolling road day for the local vauxhall boys, and me coming from a vauxhall background, i was invited over for a look.

Some lad pulled out so a space was available at the end of the day, i had my laptop with me, so we hooked it up and strapped it on the rollers, i knew the thing was a lot faster, so with me on the laptop, and my mate driving the car, he nailed it on the rollers so i could double check the map.

My mate who was watching said "**** me!"

The car came on boost (iirc 1 bar was under 3k) and peaked at 1.6bar on the rollers (it hit 1.65bar on the road) but we had a HUGE flash of det on the logging software

"what the hell was that?"

"no idea, it has never done that before, it usually never goes above 10 unless its really hot"

"it logged 80 on the laptop!?"

"****!"

We checked it over, could not find anything wrong? the engine sounded fine,

"what do you want to do?"

"it sounds mint?! just run it up the rollers and we will get a reading, might have been a false alarm"

The car put out 350bhp and 390lbft but as it turned out, this was only on 3 cylinders, as piston number 4 had cracked its ringland and only had 10psi compression :twak2:

It was approx 2 weeks later when we diagnosed it, seriously, the engine sounded spot on, it just kinda "kicked" twice when firing up (even with no plug leads connected) and it started barfing out mayo from the breather system into the catch can (needed emptied once a week)

Hence why i got rid of the thing (it would have needed a new lump, they were costing me 3k a pop and it would have been its 4th one LOL)