VEMS + ABY + GT3071R 0.63 AR + 440ccm injectors

[gnutz2]

Faults are easy to find on a standalone, i found a sensor fault on mine the other day in about 10 mins.

[Bram]

Questions in my mind are...

1)are you going to make a drag car or an everyday fast car?

If you are making a drag car,then you dont care about rough idle,or anything and you are going for high hp range,more than 550-600 side.
If you are making a fast everyday drivable car,(faster than our setup Bram,the 400ish figure) then i believe that the car should feel nice and have all motronic features there.So why not just go to someone who can incorporate a larger MAF to the setup,one that is not that costly and you can just change the sensor only,rather than the complete thing!I have seen a couple of RS2 with that scania 90mm MAF with interchangable sensor and not a the thread ones we have.So it can be done,and also without using the obsolete and agreed very expensive SQ maf either!
Also,if you get a large maf,i dont thing you will have many failures with it and that is because it will be able to handle the power and the air.My MAF hasnt had any problems so far and i have had it about a year now.AND it is working at it's limit too!I could get a larger one and get away with it for a looong time.

I have been giving it some thought and agree with you Papvas. It is my daily driver and I do like to keep the original onboard computer working + I do not have the will to tune it myself countless hours to get everything running smooth. I have found a decent Dutch tuner for my car (although some German tuner could probably fiddle more HP out of it), so that is convienent for me as well.
Still need to go and have a good run on a Superflow rolling road to show me what HP number I currently have. 7A cams are also waiting to be fitted, but I will wait with that until a remap of the Motronic (small price at my current tuner), as soon I will put in a new clutch (probably a SPEC stage 3+).

[A80Avant]

nice plans!
i have yet to find a decent 7A ex cam at a reasonable price so no luc there.Im also concidering the route to GT3076R now,but nothing immediate.I was concidering to make a holset hybrid but it would end up much more expensive than the setup i have now,so a little bigger turbo like the 3076 will surely get me where i want to go.I need to get a T3 EVO from carsten,the turbo,have them treated and ready to fit.Also i have to find a solution with the MAF,probably move it to the pressure side so that i can keep it still when i go for the remap...Future plans,nothing specific yet...I may have to drive back to greece to make some of the changes anyway...

[Bram]

nice plans!
i have yet to find a decent 7A ex cam at a reasonable price so no luc there.Im also concidering the route to GT3076R now,but nothing immediate.I was concidering to make a holset hybrid but it would end up much more expensive than the setup i have now,so a little bigger turbo like the 3076 will surely get me where i want to go.I need to get a T3 EVO from carsten,the turbo,have them treated and ready to fit.Also i have to find a solution with the MAF,probably move it to the pressure side so that i can keep it still when i go for the remap...Future plans,nothing specific yet...I may have to drive back to greece to make some of the changes anyway...

Any more info on this Scania MAF? instead of moving the Audi S2 MAF to the pressure side?

[K7ERG]

Bram - If you go Vems or standalone management you can do away with the MAF, ICV, N75 etc. You can sell these parts to make some money back towards your system. Also you could sell your Airbox to make spare cash and put a cone filkter on.

My point is once you have a standalone you dont have the expence of replacing things like MAF's especially on the pressure side/ or buying another type of MAF that can do the job.

My theory is less part/sensors more reliable........

Craig

[GazzaG60]

i have never had any issues with the idle or cruise on my VEMS. i have seen so me part finished maps that idle like *** especially on subarus. usually its down to a too conservative timing map or bad ISV control. i dont use the isv. instead i adjusted the TB and reset the TPS. never an issue.

[Bram]

I intend to have my tuner get me a solid Motronic ECU setup when new parts go in the engine, so I can always fall-back to the Motronic ECU, while maybe buy me a VEMS in the future, since the Avant is my daily driver.

[A80Avant]

excactly my thoughts Bram.Since i still think of getting more power,i wouldnt get a VEMS yet,not until i have a proper remap with the new elements there.Then if $$$ is adequate,i might think of getting the VEMS to play around with,but also can flip back to normal Motronic if i wish

[Bram]

Bram - If you go Vems or standalone management you can do away with the MAF, ICV, N75 etc. You can sell these parts to make some money back towards your system. Also you could sell your Airbox to make spare cash and put a cone filkter on.

My point is once you have a standalone you dont have the expence of replacing things like MAF's especially on the pressure side/ or buying another type of MAF that can do the job.

My theory is less part/sensors more reliable........

Craig

Hi Craig,

I see your point. However I would need a solid and near perfect VEMS setup, before I strip off all these Motronic sensors, so I prefer to have the sensors in place until the day I could sell the backup Motronic for ever

[Bram]

I heared somewhere that VEMS people are trying to get the onboard cockpit display (MPG, etc.) of the i5 models working with VEMS. Is this thrue?

[A80Avant]

well if they can get the idle to be the same as the motronic as well,then we are in business!

[Bram]

I think that can be done without the use of the ISV. Just a manual adjustment of the throttle if I read it correct.

[A80Avant]

in theory yes,it can be managed.In practice,i havent heard of anyone having an idle as good as the motronic with VEMS(or any aftermarket anyway ECU).Funny thing is that after many hours of trying,the idle kind of settles down a bit,and then they actually think that its ok like that!!

Me being a perfectionist i wouldnt settle with a sligtly rough idle just to be able to have a sligtly bigger turbo(cause i dont think ill go bigger than GT3076 anyway).SO i think a bigger maf solution and good old motronic for now,until i can be persuaded and realise that VEMS can offer the same stuff in those departments.(cause it may be better on mapping,i dont deny that),and user friendly(so no more expenses on mapping afterwards).

It is like coilovers though.After you have messed about the various settings,it kind of settles down on good old one or two of them and you let it be.Same as Vems,and remapping.After you have tried everything,you stick to one or two maps and only have to go at it again unless you get a bigger turbo,or make a big change again.

[Bram]

It's like sports, you always want to become better in it. The tuning is what I mean. When everything is solved, your hobby would be not so interesting anymore..... at least that is what happens for me most of the time. So you have to keep spending money!

[A80Avant]

true,however i find myself trying to settle down at some point.Power is nice,but you have to settle at a setup you can really get most of.