[bmwzimmer]

Welcome back to the V2 club!!

[ThomasMartin]

Originally Posted by M&M

I don't think there's anyway you can be getting -3.8 psi in Johannesburg. Seriously. Something's wrong there. Your map sensor is reading wrong or there's a problem with the wiring. Let me find some of my logs and show you what I mean.

What could be wrong? it was very hot outside and i had been racing the car a little would that make a difference ? we should meet up and compare these cars on the dyno M&M...

[ThomasMartin]

Originally Posted by e.n335

You can configure V2 to provide the same low torque as V1.47, just don't raise the numbers across the board. So you have the torque of V1.47 and the improvements of V2.0.2. That's what the user torque settings are for.

- Eugen

I cant have 1.47 Torque with V2 because at high altitude i cant make use of the torque settings as much as you guys at sea level they just dont change boost that much as the turbos just cant work that much. 1.47 was providing torque without needing 13PSI boost.

[ThomasMartin]

Originally Posted by ThomasMartin

What could be wrong? it was very hot outside and i had been racing the car a little would that make a difference ? we should meet up and compare these cars on the dyno M&M...

What wiring should i check?
im going tomorrow to the dyno come with me?

[e.n335]

Originally Posted by bmwzimmer

Welcome back to the V2 club!!

Thanks

[e.n335]

Originally Posted by ThomasMartin

I cant have 1.47 Torque with V2 because at high altitude i cant make use of the torque settings as much as you guys at sea level they just dont change boost that much as the turbos just cant work that much. 1.47 was providing torque without needing 13PSI boost.

How much boost provided v1.47 at your location ?

[ThomasMartin]

Originally Posted by e.n335

How much boost provided v1.47 at your location ?

10 PSI boost max with 1.47 i think maybe M&M will be able to confirm cause i think he is still in 1.47

[e.n335]

Originally Posted by ThomasMartin

10 PSI boost max with 1.47 i think maybe M&M will be able to confirm cause i think he is still in 1.47

Sounds fine. And V2.0.2 feels completely different and is slower with 11 psi ?

[ThomasMartin]

Ill be very honest i agree it does have more power above 6000 rpm so it races from 6000-7000 when 1.47 didnt BUT there is a lot or torque missing at this altitude it really does feel different. Im not disagreeing that V2 is a much better product and better for development moving forward and i dont regret buying it, but i dont think "at this altitude that is" a standard V2 car will pull ahead of a standard 1.47 even though it has less boost.

Shiv has on many occations said that V2 LOVES air and producess more power the more air you give, thats why a drop in air filter makes so much more difference with V2 and a cone air filter makes even more. Unfortunatly that isnt the case at high altitude cause no matter what you do there is 15% less air here. I dont think 1.47 was so sensative to air pressure as V2 im not a pro its just my observation.

V2 might be brilliant for guys at sea level but im not convinced its miles ahead in speed compared to 1.47 at high altitude "only because V2 loves more air intake and high altitude just cant provide" i can see this when racing my friends RS4 i used to take him a lot more with 1.47 than V2 at 96% settings, maybe my air intake is the restriction and when i change that it will bring V2 to life i dont know hopefully shiv can give some insight on V2 at high altitude. I have also offered help with data from dyno runs to help all his customers at high altitude get the most out of V2. Im just waiting for him to ask me what he needs.

What do you guys think?

[e.n335]

Originally Posted by ThomasMartin

Ill be very honest i agree it does have more power above 6000 rpm so it races from 6000-7000 when 1.47 didnt BUT there is a lot or torque missing at this altitude it really does feel different. Im not disagreeing that V2 is a much better product and better for development moving forward and i dont regret buying it, but i dont think "at this altitude that is" a standard V2 car will pull ahead of a standard 1.47 even though it has less boost.

Shiv has on many occations said that V2 LOVES air and producess more power the more air you give, thats why a drop in air filter makes so much more difference with V2 and a cone air filter makes even more. Unfortunatly that isnt the case at high altitude cause no matter what you do there is 15% less air here. I dont think 1.47 was so sensative to air pressure as V2 im not a pro its just my observation.

V2 might be brilliant for guys at sea level but im not convinced its miles ahead in speed compared to 1.47 at high altitude "only because V2 loves more air intake and high altitude just cant provide" i can see this when racing my friends RS4 i used to take him a lot more with 1.47 than V2 at 96% settings, maybe my air intake is the restriction and when i change that it will bring V2 to life i dont know hopefully shiv can give some insight on V2 at high altitude. I have also offered help with data from dyno runs to help all his customers at high altitude get the most out of V2. Im just waiting for him to ask me what he needs.

What do you guys think?

I would wait for Shiv to come back to you. He could have different priorities right now.

[ThomasMartin]

Not dissing shiv at all i know he is busy with a shit load more stuff than 2 or 3 guys at high altitude so no rush just want to try and get my car running right i think everyone on this forum understands their passion with their cars especially shiv. You guys know what its like your car is your baby and you need to get her happy

[M&M]

Here's my log at idle. This was taken on the N3 highway just past the Modderfontein offramp. So that's close to Edenvale & should be the same as you. As you can see it's around -2.2 psi which is right for this elevation. My wife's Golf V Gti also shows around -2.2 psi at idle.



And here's a log of the MAP:



This is an old log of the car with Procede only. You have to add 2.2psi onto that reading the get the effective boost. So it's around 13.5 at 4800 tapering down to around 10psi at 6700.

[ThomasMartin]

Originally Posted by M&M

Here's my log at idle. This was taken on the N3 highway just past the Modderfontein offramp. So that's close to Edenvale & should be the same as you. As you can see it's around -2.2 psi which is right for this elevation. My wife's Golf V Gti also shows around -2.2 psi at idle.



And here's a log of the MAP:



This is an old log of the car with Procede only. You have to add 2.2psi onto that reading the get the effective boost. So it's around 13.5 at 4800 tapering down to around 10psi at 6700.

i actually live just off moderfontein we should def meet up soon, so 1.47 peaking at 11 PSI and tapering off only to 8 at 6700. At 98% V2 i hit 13.5 once in 5 runs only and there was much more tapering off by 6700 i was well below 10 PSI. I dont think my car would stay with yours at this altitude.Given the same boost i dont think V2 produces the same torque i stand to be corrected. I gave u my number and we live right next to each other we should hook up soon i really want to check this issue out. I have since lowered my settings to 94% thats should peak boost at 11.5 the same as yours so we can see how the to maps do against each other with the same boost. Should be very very interesting

[M&M]

Ok wait. The peak on that graph was not 13.5. It's around 11.5. I added the 2 psi to compare effective boost.

But let's forget about that for now. Let's not add anything. I went from 11.5 to 8. You went from 13.5 to around 10. So you are boosting higher and holding it better.

[ThomasMartin]

By the way be very carefull they got speed traps between bridges on moderfontein going in both directions behind silver barriers

[ThomasMartin]

I would still think you are going to have much more Torque than mine even though you boosting less than me im dying to check it out.

[e.n335]

Originally Posted by ThomasMartin

I would still think you are going to have much more Torque than mine even though you boosting less than me im dying to check it out.

I would check out first why you get -3.8 psi. Thats 1.7 psi less than M&M and the power you miss, IMO. Basicly you say you make 17.3 psi with your user torque settings. Take care about your turbos.

[ThomasMartin]

Originally Posted by e.n335

I would check out first why you get -3.8 psi. Thats 1.7 psi less than M&M and the power you miss, IMO. Basicly you say you make 17.3 psi with your user torque settings. Take care about your turbos.

Im also worried about that thats why i lowered to 94% hope shive can give some insight on what could be wrong and why im reading -3.8 when M7M is ready -2.5???