[sajakh]

Originally Posted by Driver72

That's going to depend on the race, but for the most part, it's going to be the one with more high rpm hp that wins rather than the low end torque.

The low end torque will get you out of the hole quicker BUT ONLY if you have the traction to USE that extra torque.
But then once going, when racing, it's all about being above 4000 rpms and that's where the HP comes in to play.
So the car with the greater HP above 4000 rpm will pull on the car with lower HP but great torque.

Now, if the race is for a short distance and involves like a "top gear" test where you start at 1500 rpms and go until 100 mph.
The car with the lower end torque will probably win that race, as it will pull harder at the low rpms and gain a lead, and probably hold the lead up to 100 mph before the other car can catch up.

But in the case of our cars where traction is an issue (even if we had LSD's traction would be an issue) the car with the higher HP (v2.02) would beat the car with more torque (v1.47) every time.

Good explanation!

[E90ice]

Originally Posted by ThomasMartin

I have put settings on 96% and here is the log, still only peaking at 13.6 PSI im at 5500 ft and running 95 RON with a bottle of good octane booster.
Not having any problems with knocking or pinging so i suppose its safe to up to 97%-98% to try get close to the 14-15 PSI level?

If you already saw a 15-ish psi boost spike (at any given time), then I would not increase torque values anymore.

[ThomasMartin]

Originally Posted by Driver72

That's going to depend on the race, but for the most part, it's going to be the one with more high rpm hp that wins rather than the low end torque.

The low end torque will get you out of the hole quicker BUT ONLY if you have the traction to USE that extra torque.
But then once going, when racing, it's all about being above 4000 rpms and that's where the HP comes in to play.
So the car with the greater HP above 4000 rpm will pull on the car with lower HP but great torque.

Now, if the race is for a short distance and involves like a "top gear" test where you start at 1500 rpms and go until 100 mph.
The car with the lower end torque will probably win that race, as it will pull harder at the low rpms and gain a lead, and probably hold the lead up to 100 mph before the other car can catch up.

But in the case of our cars where traction is an issue (even if we had LSD's traction would be an issue) the car with the higher HP (v2.02) would beat the car with more torque (v1.47) every time.

+1 Cool thanks for the info

Another question , if im sitting on 96% setting and my boost is only peaking at 13.6 is it safe to move to 100% slowly of course to stop when i reach 14-15 PSI? Now if my fuel starts to become a problem how will i know? Can you feel knocking and pinging? or will the car just retard timing and i wont feel anyting except less power? Sorry if its a newb question.

Im actually enjoying tuning my own car think im going to start tuning more directly as my car tappers off a lot more than other cars after 5000 rpm so think ill up values between 5000 rpm and 6000rpm so i can get a more constant boost log? What do you guys think? im also getting a K&N filter tomorrow so intake doesnt become a problem. I want the 400 torque

[Lane]

Does 2.0.2 pull back boost at stress? I.e. does the "V2 Boost Decay" feature still exist?

[CanadianTSi]

I would continue to slowly raise the %, your only at peak boost for like 1 second then it falls off. If you can get it to hold that boost up top longer it should give you a nice gain.

PS changing 1 setting isn't exactly "tuning" but it is fun to make a change and see a positive result.

[e.n335]

@thomasmartin:

Pls. keep in mind that your boost has not been that high because you drive in a 5.500 feet environment, IIRC. The torque bump you miss does not say the power isn't there. Power distribution is just implemented in a different way, a way I prefer. The dyno curves show this. No 335i behaving like a diesel, please. On cooler days boost will be lower as well. Your car should still be able to run @ sealevel on hot summerdays without issues.

My 2 cents.

- Eugen

[stillclaimndp]

Originally Posted by ThomasMartin

I have put settings on 96% and here is the log, still only peaking at 13.6 PSI im at 5500 ft and running 95 RON with a bottle of good octane booster.
Not having any problems with knocking or pinging so i suppose its safe to up to 97%-98% to try get close to the 14-15 PSI level?

weird, check the one i ran today at 90% then at 92%, v2.02 is much faster than 1.47 guys... it's setup how it is to make sure you have no CEL until he gets a solid map bringing all the tq back worry free in 2.03:

[Sniz]

Originally Posted by stillclaimndp

weird, check the one i ran today at 90% then at 92%, v2.02 is much faster than 1.47 guys... it's setup how it is to make sure you have no CEL until he gets a solid map bringing all the tq back worry free in 2.03:

You need to keep in mind his altitude, the air is already thinner so it makes the turbo's work even harder to reach certain psi.

I'd say SLOWLY turn it up and keep an eye on the levels. I would shoot for 14 psi to be safe, if you come down in altitude you don't to be boosting at 18psi or something too high for your octane.

[Sniz]

Originally Posted by dawgdog

I love 1.47. I'm not upgrading until this issue is resolved.

Upgrade....trust me its worth it. I haven't even changed my tq settings yet and I know the car is faster than 1.47....no question. The addictive low end tq of 1.47 is nice, but honestly its pretty useless in the 1st few gears.....it won't hook. Actually come to think of it, V2 has made my first 2 gears even more worthless! Increased power FTW!

the only thing that I liked about 1.47 was cruising at 70mph in 6th and tapping the throttle to pass people, but after the 400rpms of peak tq it doesnt pull as strong as V2.

[M&M]

Don't forget that at 5500ft, when you at idle the map sensor reads -2.2psi. So actually if you boosting 13.6 psi, then the absolute boost is actually going from -2.2 to 13.6, which is 15.8 psi.

But there might be a slight variation depending on which part of Johannesburg you live in, normally 2.0-2.4psi. Check the map reading when you at idle and add that onto you peak map reading. And yeah, you will have a more exagerated drop-off than the sea-level guys at higher rpm, and you power will peak few hundred rpm earlier.