0-60 with mods

[Russ]

FWIW here are the results of some 0-60 G-tech runs I did before, during and after recent mods done to my '91 5 speed, tested on the same stretch of road, TCS off, temps in the 65-70 degree range for all tests:

5.42 sec - stock

4.92 sec - short gears/4.235 R&P/JUN light fly/DC Sports headers/Tubi/Cantrell AIS

4.71 sec - above mods + Dali chip

 

[MvM]

Russ
Very interesting information.
Can you tell me what wheels & rims you are running.
Also, just how do you launch the car. Do you rev it up much or did you start with the engine at idle.
I did two 0-100 km/hr runs in early January (was trying to do 0-200 km/hr, but only made it to 200 once). My 0-100 times only 6.28 and 6.25 seconds. Not very impressive and to be honest, I was a little dissappointed.
Am running 18" wheels myself and was starting from idle, TCS and airco on.
Used a AP-22 for the measurements.

 

[Russ]

Can you tell me what wheels & rims you are running.
Also, just how do you launch the car. Do you rev it up much or did you start with the engine at idle.

The first two runs were on 2001 OEM 16/17s wearing Dunlop SP8000s on the fronts and Falken Betas on the rears, and the last was on 1991 OEM 15/16s with Yoko A022 OEM tires. I have a set of A022 Yokos for the 16/17 rims which I will have mounted shortly so I'll be able to compare the 15/16 numbers to the 16/17 numbers.

To launch I quickly rev up to around 4k and quickly release - but not sidestep - the clutch as I apply more throttle. I aim to avoid wheelspin, a slight chirp is just about perfect. Turn off TCS and A/C and I'll bet you'll see much better numbers.

 

[nsxtasy]

The first two runs were on 2001 OEM 16/17s wearing Dunlop SP8000s on the fronts and Falken Betas on the rears, and the last was on 1991 OEM 15/16s with Yoko A022 OEM tires.

I bet the tires were more responsible for the drop in time than the chip.

 

[Russ]

I bet the tires were more responsible for the drop in time than the chip.

You would!

 

[j14nsx]

Interesting. Just want to add that I borrowed a accelerometer thingy (racetech) and got pretty much the same 0-60 (5.5secs), with my stock '92. I wasn't trying absolutely as hard as I could. So your figures are pretty consistent. Shame you didn't so 0-80 times, as it would be interesting to see how the short gears really effect things. I wish more people would put these figures in, instead of quoting Dynojet bhp all the time.

 

[nsxtasy]

You would!

That's based on how few hp the chip adds, according to the dyno graphs.

BTW, interesting that the G-tech is showing 0-60 times for the stock car that are slower than almost all the magazine tests, which typically got 5.2-5.3...

 

[MvM]

Nsxtasy
I know several people who have the Dali chip. Although it adds only very little in terms of HP they all claim that the car seems to rev more quickly in every gear so that might explain a little.
I'm planning to do a little modding myself and will perform some more tests both before and after.
As for my times, it's obvious I have to try again. So far, my 0-200 km/hr was 22.29. 0-190 was 18.80 and 19.63 sec. respectively.

 

[bambookid]

What is a Cantrell AIS?

 

[ANYTIME]

Check out the Cantrell Concepts Intake here

http://www.scienceofspeed.com/products/exhaust_airflow_products/NSX/Cantrell_Concepts/AIS/

 

[4AU4LIFE]

Totally stock. 0-60 were 5.2 all day.

 

[Russ]

Originally posted by nsxtasy at various times
I bet the tires were more responsible for the drop in time than the chip.<BR>
That's based on how few hp the chip adds, according to the dyno graphs.

What about the wheels/tires do you suspect might make a difference?

 

[nsxtasy]

Originally posted by Russ
What about the wheels/tires do you suspect might make a difference?

I didn't see anything about different wheels and tires.

Wheel and tire sizes don't generally make a difference. Using a stickier tire (like a drag radial, for example) can make a significant difference. Reducing tire pressure can help, too.

Basically, the two things that make the biggest difference in acceleration runs are power and weight. If you can add a significant amount of power (which will be shown on the dyno) and/or drop a significant amount of weight (as shown on a scale, and adjusting for any differences in fluids like the amount of gas in the tank) it will result in a significant improvement in acceleration times.

Gearing can help, too. Bob Butler's calculations show that going from a stock five-speed '91 to the short gears and 4.23 R&P will drop 0-60 times by 0.35 second, which is significant. However, those same gearing changes actually hurt acceleration above 70 mph and as a result have less effect on 1/4 mile times (0.19 second). Power and weight changes are more likely to result in improvements across the board, rather than at specific speeds.