Tracking with Forced Induction

[glamcem]

Originally Posted by King Tut

Linear is linear if the slope of the curve remains constant.

exactly
so having said that which one do you think is more "linear"?

this


or this

[MyRx]

Lunch break ruined now. Thanks to math.

[ptuning]

Originally Posted by CSG Mike

Ouch. Someone please buy me some more seat time!

Mike, I'd say that if we were to set up our suspension to your liking, gave you 400-500whp, and threw on some wicked aero (something that's totally possible when you have a lot of power to play with), you'd be going around the race track much faster than 250-300whp SC with the same suspension/wheel set-up. No?

- Toan

[King Tut]

Originally Posted by glamcem

exactly
so having said that which one do you think is more "linear"?

this


or this

This because I like 250+ ft/lbs of torque from 4000 to 7000 RPM creating a nice linear power band where I will be keeping the revs for the most part on track:

[King Tut]

Originally Posted by ptuning

Mike, I'd say that if we were to set up our suspension to your liking, gave you 400-500whp, and threw on some wicked aero (something that's totally possible when you have a lot of power to play with), you'd be going around the race track much faster than 250-300whp SC with the same suspension/wheel set-up. No?

- Toan

Only for half a lap where the car would explode from all the turbo heat.

[glamcem]

Originally Posted by King Tut

This because I like 250+ ft/lbs of torque from 4000 to 7000 RPM creating a nice leaner power band where I will be keeping the revs for the most part on track:

oh don't get me wrong, I love torque too .. I see you had/have a Vette so you know how it feels and nobody can argue with the fun factor of the higher torque..

all I am saying is if you limit the RPM range to a certain point all torque curves are linear or flat (between 4k-7k example) same applies to all parabolic curves (mathematically speaking) ..on the above graph, if you look at the bigger picture (3k -7k) you can tell it's not linear it looks more like an arch ..
another thing to mention at the track it is really hard to replicate the dyno conditions since on the dyno it's a steady pull from 2k rpm to the redline at WOT, in real life it is even more curvy and the transient response becomes an issue, in an NA car you may get away with some lift off in the mid corner but in a turbo car since the boost is a lot more temperamental you can easily upset the car and even spin...

[sw20kosh]

Originally Posted by CSG Mike

Ouch. Someone please buy me some more seat time!

Lol mike, (with seat time) you'd be faster in a ptuning GT3076 equipped car. Hands down no questions asked. I heard you are gonna try it soon with rb6freak's car.

[King Tut]

Originally Posted by glamcem

another thing to mention at the track it is really hard to replicate the dyno conditions since on the dyno it's a steady pull from 2k rpm to the redline at WOT, in real life it is even more curvy and the transient response becomes an issue, in an NA car you may get away with some lift off in the mid corner but in a turbo car since the boost is a lot more temperamental you can easily upset the car and even spin...

I don't even lift bro.

[Tye300]

I got lost in all that math...

[glamcem]

Originally Posted by King Tut

I don't even lift bro.

[sw20kosh]

[CSG Mike]

Originally Posted by ptuning

Mike, I'd say that if we were to set up our suspension to your liking, gave you 400-500whp, and threw on some wicked aero (something that's totally possible when you have a lot of power to play with), you'd be going around the race track much faster than 250-300whp SC with the same suspension/wheel set-up. No?

- Toan

I need to win the lottery

I'd run different suspension/aero for both cars, but yes, more power is usually faster

[CSG Mike]

Originally Posted by sw20kosh

Lol mike, (with seat time) you'd be faster in a ptuning GT3076 equipped car. Hands down no questions asked. I heard you are gonna try it soon with rb6freak's car.

I've been wanting to drive a ptuning car.. I think it'll be one of the rare setups that I won't have heat issues with.

[xwd]

At the end of the day you need to learn how to drive the car you are driving whether it's a turbo or SC or whatever. If you have crappy tires on a track it isn't really going to matter whether you are SC or Turbo because chances are you are going to overpower the tires.

Sure with a turbo you can mash the gas and hit a huge amount of torque right away and lose traction. If you do that more than a couple times, I'm not sure what to tell you. There is something called throttle modulation, and it can be done with a turbo car.

If you want to throw some electronics at it, Ecutek has a traction control function which if you are advanced enough can do things like limit boost. You can limit throttle plate opening and other things as well to cut down on power delivered. Or just do what I've done in the past, run WG boost on your turbo so you aren't cooking your engine and making way too much power to handle. Ecutek can also do per-gear and RPM based boost control. If you are in 2nd gear at 4500RPM coming out of a corner, chances are mashing the gas and having the turbo spool instantly isn't going to end well, you can easily tell the car not to do that.