With a TT setup- say at around 400-450whp, what is needed to actually get the car going from a standstill or at a low gear? What are the best overall street tires and what sizes? Is a better LSD needed or better clutch? Can a ecu limit the boost at a lower gear and rpm and rise the boost when the car gets full grip? Or maybe something else?

Thanks in advance

 

400-450whp is a lot of power. Even with the best slick rubber or UHP(or MAX) rubber, good LSD, clutch, tranny, and so on. There is always some variables that you can't control. Road condition, temp, humidity, driver's skill, and so on. But if your have 400~450whp, you seriously need to have UHP, aftermarket LSD, tranny jobs, improve skills and so on. Let just say having a better hardwares (in this case, after market performance parts) do not actually make a car going from a standstill without any slips or lost of car control, but it sure helps. On ecu issue, APEXi AVC-R or something electronic boost controller from well-known manufacturer can do similar things like RPM base boost control, RPM base duty cycle and so far. Plus turbocharger uses exhaust gas, thus high rpm usually mean higher boost.

 

For the people pushing out around 400whp, what extra mods do you have to help with traction? About how much did these extra mods cost? Also, is the car controlable and relatively safe. I'm asking b/c i am want to get the APS TT but i dont want to lose to some bmw b/c i slip through 3 gears and end up spinning out.

Thanks

 

ultimately it downs to driver skill.
the car is an extention of your abilities, capabilities, skill and, knowing limits.
you treat it bad, you get bad results and vice versa.

aside from all that, proper suspension setup and R-Compound DOT tires like, RT-615 tires, would help on the street. Staged boost controllers help a bit, a better clutch and LSD unit aids in applying power to the rear wheels.

 

I've upgraded my clutch and flywheel and noticed a dif in my road racing...it depends what you are into. If you drag race, you don't want a lightened flywheel...but if you road race, you do. It is hard to control the power off the line and if you;re not carefull, you'll def break something. I'm 10,000 miles strong with my SC and no issues...

 

I would have to say better suspension and some better tires, but you still get squirley when taking off from a standstill like I did today, the best thing is to try and control the take off and not just dump the clutch. Like many have said, it is driver skill to achieve the best control.
On a side note, if you want to have 450hp to the wheels, I am sure the stock internals will not hold up very long, isn't the max power on stock around 400 to 420??

 

Using a cosverative, safe launch with a good driver and good conditions what tends to be the 0-60mph times and the 60' times?

 

on my street tires and 19's, I can get a 4.9...but with slicks, I'm sure I can shave .5 off easily.

 

your ride is slow remember I beat you!!!! J/K What's up Randy how is Texas? Well back on topic I agree better tires, suspension and the most important drivers skill!! All the mods in world can not help if you don't know how to drive with your new hp to use your mods to their best ability. It's a learning process all over again you can't do the same things as a stock G if your FI.

 

Yeah, yeah! Texas is awesome...can't wait until some of my Cali buddies can rode trip it down here.

 

whats the best lauching technique for the fastest times?

 

here is the thought that went thru my head the other day against a SVT Lightning Truck from a dead stop.

easy, easy, easy, don't kill it, easy.

results:

spun 1st a little at the end after I was out of the clutch, spun second just a tad and then I was hooked.

Totally new driving demands with FI. I was real frustrated for a while, but it just takes time.

 

According to motor trend or C&D, I know that with the 05 bmw m3 (with the competition option), you can turn off the traction control if you want heavy wheelspin. But with it on it seems to do a good job in stopping the spin so you can get off the line faster and in control. With an FI'd g35, does the VDC system stop wheelspin and allow the car to get off the line like in the m3 or is it not able to handle the extra power and just go into a spasm?

 

Just get one of these: http://www.racelogic.co.uk/traction/launch.htm

 

The OEM TC is there to save your butt , it does very poor job at optimizing launches. It's a def spaz.