Remapped my Zed

[stuartinzg]

stuartinzg, The map is custom to my car & the engine is factory except for the map. The two performance tuning things I'm likely to add is an LSD and an uprated IC. I just put a battery conditioner on my car 2 days before and let it fully trickle charge. The mapping was done with just battery power.

Please can you PM me the details and who I need to contact? I would love the same service (was it Wedge?).
Especially the power difference on comfort vs. sport - this is perfect

The flames excite me

[R.E92]

stuartinzg, The map is custom to my car & the engine is factory except for the map. The two performance tuning things I'm likely to add is an LSD and an uprated IC. I just put a battery conditioner on my car 2 days before and let it fully trickle charge. The mapping was done with just battery power.

Please can you PM me the details and who I need to contact? I would love the same service (was it Wedge?).
Especially the power difference on comfort vs. sport - this is perfect

The flames excite me

Think the quotes have got confused

My advice would be to contact BuraQ over at E90post. Wedge is great also but BuraQ specialises in DCT equipped cars.

I'm also interested in who Techathy used. He said it was dyno tuned so much be a UK based tuner using MHD.
Techathy; Do you have any log data for you tune? I upload all mine to Datazap.me to interrogate.

[stuartinzg]

Oops, yes - @Techathy please give us the details. I'm desperate!

[techathy]

I was originally going for a rolling road map but quickly found none of the tuners could do what I wanted without a lot of money. As having extensive mapping experience mapping engines from scratch, when I mean scratch read that as starting by making my own engine loom to hookup to ECU a 0 filled ECU. I simply hired the rolling road & did it my self. I did spend a lot of time going through various maps.

No I'm NOT doing anything to someone else's car, I was barely able to get enough confidence to map my own car.

[R.E92]

I was originally going for a rolling road map but quickly found none of the tuners could do what I wanted without a lot of money. As having extensive mapping experience mapping engines from scratch, when I mean scratch read that as starting by making my own engine loom to hookup to ECU a 0 filled ECU. I simply hired the rolling road & did it my self. I did spend a lot of time going through various maps.

No I'm NOT doing anything to someone else's car, I was barely able to get enough confidence to map my own car.

Nice work, always better doing it yourself as you really appreciate the subtle changes.

I noticed you were trying to smooth out the idle. Try these VANOS adjustments. My idle is so much smoother than the stock map now, I think the stock car runs too much EGR at idle.

vanos.jpg (80.57 KiB) Viewed 722 times

One thing most publicly available N54 maps miss out is correct change to the "boost request offset %" table. If you are targeting under 180 load then you are fine using the stock 35is values. Above that you get timing drops when abruptly going WOT below 3k rpm. If you use the values from the free backend maps then you end up getting dangerously lean AFRs during spool mode (fuel mode 20).

[stuartinzg]

I was originally going for a rolling road map but quickly found none of the tuners could do what I wanted without a lot of money. As having extensive mapping experience mapping engines from scratch, when I mean scratch read that as starting by making my own engine loom to hookup to ECU a 0 filled ECU. I simply hired the rolling road & did it my self. I did spend a lot of time going through various maps.

No I'm NOT doing anything to someone else's car, I was barely able to get enough confidence to map my own car.

Crap What other options do I have?

[R.E92]

I was originally going for a rolling road map but quickly found none of the tuners could do what I wanted without a lot of money. As having extensive mapping experience mapping engines from scratch, when I mean scratch read that as starting by making my own engine loom to hookup to ECU a 0 filled ECU. I simply hired the rolling road & did it my self. I did spend a lot of time going through various maps.

No I'm NOT doing anything to someone else's car, I was barely able to get enough confidence to map my own car.

Crap What other options do I have?

Use a tuner without a rolling road!

Data logs allow you to street tune the car which in some ways is better than a dyno since you are loading up the engine under real world conditions and have realistic airflow across the intercooler and engine bay.

The phrase for such a tune is "eTuning". That's what tuners like BuraQ and Wedge provide.

Rolling roads are great for R&D on map changes but once you've done that a simple data log is all you need to customise a map to a car.

[stuartinzg]

I already spoke to Wedge so either him or BuraQ sounds like the next step then.

Thanks guys,

I really want the different power based on comfort, sport, sport+, so i can run 95,98,100 octane and keep the car on lower boost until I really want it. For me this is a real win!

[R.E92]

I already spoke to Wedge so either him or BuraQ sounds like the next step then.

Thanks guys,

I really want the different power based on comfort, sport, sport+, so i can run 95,98,100 octane and keep the car on lower boost until I really want it. For me this is a real win!

The problem with that is that the standard throttle mapping or "high" as it's called in the DME is only used when the car is in normal mode and the shifter is in D.
If you go into sport manual mode then you are using the sport "low" table which will give you full power.

Wedge and BuraQ will both be able to do that for you, it's a simple enough mod to make.

[stuartinzg]

I already spoke to Wedge so either him or BuraQ sounds like the next step then.

Thanks guys,

I really want the different power based on comfort, sport, sport+, so i can run 95,98,100 octane and keep the car on lower boost until I really want it. For me this is a real win!

The problem with that is that the standard throttle mapping or "high" as it's called in the DME is only used when the car is in normal mode and the shifter is in D.
If you go into sport manual mode then you are using the sport "low" table which will give you full power.

Wedge and BuraQ will both be able to do that for you, it's a simple enough mod to make.

Ok, although I'm not really sure what that means ... is there a downside to switching power based on the "mode" ?

[R.E92]

It's not as simple as "limit boost to 12PSI in normal mode", you have to change the torque request table so it only ever requests 70% (for example) torque.

Personally I just avoid going full tilt when I know there's 91 octane fuel in the car. Doing a quick 18PSI splurge for an overtake isn't that bad. But you may notice serious timing corrections if you do a sustained WOT pull through several gears on low grade fuel.

[stuartinzg]

Understood. I just love the idea of different power in different modes, like the older m5

[techathy]

Yeah, also gives you a better understanding of what’s going on with the car.

Actually the smoother idle & reduction in surging was a side effect of making the car a little richer than stock, it was just running too lean for my liking at low loads.

I used a free map as a base for the basic roughing out but then tailored the map to my car. I did have a few “SERIOUSLY?” moments when looking at the AFR in the logs. The way I used to map my car was make a big change, have a RR session to get it close then go out on the road/track & polish the mapping.

The one problem I had with the multiple modes issue was I wanted to adjust the spark & fuel tables for the low quality option but couldn't see a way of doing that. All I could do was down the torque target.

[R.E92]

I think the only true way of having adjustable on-the-fly ignition and fuel tables would be using the Syvecs standalone unit.

There was a piggyback unit called Procede which was a Haltech EMS system. It could change ignition timing and probably could do fuelling changes too. The JB4 was just a cheap copy of the Procede but gained traction due to its low price and pro-active support.

[techathy]

Which confirms what I thought. The last ECU I used stored completely independent maps which you could select arbitrarily.