NefMoto

Hello,

I'm Johan and i'm new here.
Love how much info is on this forum and everyone helping eachother.

I think i can use a bit of your help with my project.
This is my first ME7 ecu i tune and it is not an easy project.
I've always only done diesels, so i know quite a lot about (chip)tuning.

The car is a euro R32 Golf MK4 with turbo and 1250 cc injectors on E85.
I'm trying to map it on a Pro-M 117 5" MAF
With the MAF you get a test report with the calibration.
So i put that in MLHFM and put MLOFS to 0.
I'm running it on a dyno with OLS300 simulator so i can change KRKTE during running to get into ballpark quite fast.
Problem is AFR is hard to get right..
When i get it good at low rpm it is way to lean on higher rpm/load.
When i get fuel right it should be quite ok everywhere i think..

Has anyone worked with big Pro-M MAF's on ME7's here?
Is this calibration always ok?

Does it run completly on MAF at low load or also on KFMSNWDK?
Looks a bit like it switches between those 2..

Hope you guys can give me a few pointers :-)

Johan

Get a real MAF. One that doesn't require a 5" tube.

It is a complete MAF:
(http://www.promracing.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/1/1/117.jpg)
Turbo is quite big (GTX4208R) so this fitted quite good and can support huge amount of airflow.
But is this bad to use?

Johan

An 85mm HPX can support 3600kg/h.

Ok thanks!
I'll look into that.
Flow will be enough with those  :D

So the problems i have are normal with the Pro-M MAF i have here?

Does maybe someone has a MLHFM data i can use for a E46 M3 MAF?
That's the only big MAF i have laying around ATM.
Can't find calibration in M3 file because i have no good damos of those.
Than i'll order a HPX MAF when i don't get the pro-M working correctly..

are you familiar with TVUB?

Yes, i thought if i leave it stock it will be quite ok to start with, but these injectors react a lot differently problebly..
What is best way to do this if you don't know how injector react on voltage?
Put whole map on 1 than try to keep afr straight on same load with different voltage or something?

Have a search for the data on the injectors, with the data will be the dead time to complete the TVUB map
Will also help you with the correct scaling for the KRKTE

ok thanks.
i'll see if i can find the info.

Did some research and it are ID1300 injectors.
TVUB is a bit weird in damos.
4 different damos all don't have voltage in axis, only weird digits..
I think it should be factor 0,0704 than axis is 6v, 8v, 10v, 12v, 16v.
This is injector data:
http://injectordynamics.com/injectors/id1300/

Besides the diameter of the MAF. Maybe you are trying to set to much variables on the same time.

I have a similar work to do this year but I will calibrate the MAF with fuel und OEM injectors first. After that the injectors - step by step...

axis doesn't rally matter to be honest, just try to reduce cpu time (interpolation).  Very good approach, to many vars changed a once unless you're an uber pro is a huge mistake..


re tvub axis the factor is derived via cpu speed.

I didn't build the car, the put it here and i'll try to make something out of it :-)
ME7 is an awfull lot different  from EDC's what i'm used to.

And yes there where way to much variables in this car.
So i have a stock maf now, so i know that's ok.
Try to get injectors working correct first.
Runs quite good now but won't start, TVUB looks too much off at lower voltages.
I'll correct that and see how it goes.
Thanks for the help and will post my next problem i will have with this car..
Should make 1000 hp so will be a lot of work left..
And has 7 speed DSG from RS3 with stronger clutches...

Strange story here. Who builds a car with this amount of money and the "tuner" is a dieselgeek without basic me7 understanding.

its not against you but there are better ways to learn me7 plus this r32 was never a turbocar.

where are you located?

Someone without ME7 understanding going for R32T DQ500 combo.
That's going to end well.

At this rate maybe in a few years it'll be tuned right, maybe never.
Your best bet is pay someone to tune it who has done this before. It is very difficult to get this running correctly.
Also requires ASM mods.

The guy who build it brings me a lot of cars, and asked if i want to try to get this done.
We'll see where it ends..
Maybe it's to difficult for me, but i try to learn as fast as possible.
With the info on this forum and some damos and logic thinking i hope to get quite far..
It is running quite ok now, but a lot still needs to be done.
Doing 600 hp @ 1 bar now.
So wish me luck guys..
I hope you guys still want to help me with my noob questions..

Damn that is much drivetrain loss you have calculated with. 30% ?

You can count the people on your one hand who could get a such project working properly on this forum.
They've also been at it for many years.

Ultimately it is possible to make power on WOT by skewing the torque model, but the car will be an undrivable kangaroo on part throttle.

I know this will be a big challenge..
But i will learn an awfull lot of it and if i won't succeed he'll need to find someone else to map it.
We'll see where it will end..
It also has cnc ported head and almost 300 deg. cams and can turn 8800 rpm.
That's why it makes quite some power at low boost.. and i checked it was 1.1 bar for 600 hp.

Biggest problem is no one want to tune the car because of it is running ME7.
But stand alone ecu's can't work with the DQ500..

ok.
btw, how is idle with close to 300deg?

idle is way better as i thought it could be.
880 rpm nice running, i thought i would at least need 1000 rpm..

again which country are you from

In which country are you located? =)

You would ideally need some asm-mods for mono-lambda control + load cap etc, and on top of that a good MAF.. Before even attempting to tune this.

Theoretic flow across the throttlebody is something that really needs adressing.. And ofc timing and all other normal tuning aspects.

If youre struggeling to dial in a set of injectors, you are definitely in over your head here..
That said, its not like it cant be done, im sure given pointers, help and TIME, you can end up with a decent result and good driveability.
(Ended up tuning three r32 turbos with power in the 450-750whp range, when i had a go at the 032CN ecu..)

I'm from the Netherlands.
We'll see how far we will come, i knew it wouldn't be easy.
And if doesn't work, he'll need to find someone else to tune it and at least i learned an awful lot..

Mono-lambda seem to work ok now, no load cap yet at 600 hp.
Trottlebody control i modded quite a bit, will take beter look when i try to make driveable.
First try to get idle, WOT and starting perfect.

I will try some more next week and i'll let you guys know how it goes and what troubles i'll run into..

it will be a challenge I can think of a few ways, start an IDA project and define relevant functions you will learn how it works.   If I listened to how many people say "it cannot be done, I would do nothing" good luck mate, 7 months of ida ahead I fear unless you have an a2l.

p.s  MAF function is easy to find follow the ADC or xref a word.

Looks like DSG box is broken now..
Made 666 hp on 1.17 bar boost.
I did a run with rev limiter bit higher (8500) and after that gearbox won't go in gear, gives code from gearselector and inputspeed.
Checked everything but looks like hardware issue..
Too bad..

Sorry to hear that

Hi TurboJohan,

I have a similar project started a few years ago, and back then I talked to a guy called VR6specialist: http://www.vr6specialist.nl/
Perhaps you can get some advice there..?

Yes i know them.

First we need to fix small problem...

(http://myalbum.com/photo/WntLzK1gYaJ9/720.jpg)
(http://myalbum.com/photo/KhHFTOGnRcJA/720.jpg)
(http://myalbum.com/photo/a4vMY2R4SJVt/720.jpg)

You must control boost on that one.. you will eat gearboxes everyday

I have a TT 3.2T GTX3582R/ 0.86AR but controlling boost is a must if you dont have a really Big turbo that spools tomorrow. I control boost with an arduino based solution.

spools not that quick and torque is not that high...
I think i has to do with 1 mass flywheel and resonance at high rpm in the shaft.
We'll see how it goes when it is fixed..