Not getting off the line very good. It seems, to me atleast, that an evo which let say runs 10.50's, has the same 60 foot time or very close to a evo runing 9's. Im not saying there bad times, but it seams to me that alot of tuners are having trouble launching there 800+ hp car. I know it is tough, but ive seen a few 10 second evos get out launched vs a rwd car. I know with proper set up a rwd car hook amazingly. But it still shouldnt be like an awd car. What gives?

 

Its hard to build higher boost off the line with huge laggy turbos and 6spds with no stalls. Plus alot of the evo guys HATE nitrous. Its not they're having trouble launching, its that with the AWD, a 6spd, and a HUGE turbo our cars won't make alot of boost off the line for heavy launches.

 

At that power level, RWD is _FAR_ superior to AWD. Even FWD becomes better at that point, too, but like RWD, it's only if you have the right suspension and HUGE slicks.

 

. Plus alot of the evo guys HATE nitrous





why???

 

That makes sense. I learned something today. Thanks

 

Maybe because it's associated with rice...somehow?

 

Would you mind explaining physically how RWD is better than AWD at this power level? If you take drivetrain reliability out of the equation, and turbo lag, AWD will always be faster in a straight line than either FWD or RWD (mathematically). So lets say we have two cars:

1.) 1000HP V8 RWD weighs 2000lbs

2.) 1000HP V8 AWD weighs 2000lbs

Lets assume both cars have similar suspensions and the exact same tires front and rear. Which will win? Of course the AWD car will win!

 

But why? The ams evo, has massive slicks on it, anti lag, and launch contoll. Why would a 10 second mustang get the hole shot? We cant say that its the turbo being soo big, because it has anti lag, and build somewhere in the area of 15 psi off the line. So what gives. I can see a rwd being better, but FWD? Not unless they have a huge wheelie bar. And even so, the 60 foot times are no where near what a rwd car is.

 

^^^From the launch ONLY...eventually the RWD will catch up and pass because their is less power lost through the drivetrain.

 

This is because the mustang has TONS of low end torque and huge rear slicks. The evo has good traction but almost no low end power even with the "anti lag".

 

Ummm. no. Awd drivetrain loss is only maybe 20 hp (if that) versus RWD drivetrain parasitic loss. The amount of time GAINED with the extra traction would be alot more than the time LOST from 20 less hp. Trust me.

 

I don't know the explanation, but RWD is far superior. This isn't in question. RWD has a huge advantage over AWD as you get to and beyond that level of racing. I'm saying this not because I understand the physics behind it, but because so many AWD cars switch to RWD, and you don't see the RWD cars switching to AWD. The AWD system is too complicated and prone to breaking. It's much easier to put that power to two wheels, and they can put some ridiculously huge slicks on there to get some crazy 60's.

 

Yes, true, But at the rpms they are lauching at the evo makes boost almost instantally. So the torque should be there. Lets please stay on topic, we are talking about launching only, not drivetrain loss.

 

The problem with AWD is after the launch the engine has to power four wheels and not two, the extra differentials lose mechanical energy via heat, and the extra set of wheels (including rotors and axels) are more wieght for for the engine to rotate than with a 2WD set up, so there is more power loss throughout the drivetrain.

In a straight line the same thing that gives AWD a launch advantage becomes, a disadvantage when traction is less relevant

Edit: also during acceleration weight transfers to the rear, giving RWD another advantage at speed, because the front axels on AWD become unnecessary to propel the car forward after the initial lauch

 

It's not calculated by hp....please, a 900 hp drag evo only loses 20 hp?!? The same goes for a stock evo? It's more like 23%+ power loss with AWD; RWD is about 17%. Trust me...