So, sometime back, when folks on the forum were talking about these
devices, I bought one of the Katt Matrix units. I've used it a couple of
times, but have had it out of the car for a while, as I had the windshield
replaced a couple months ago.

So, my question, just how accurate are these 3-axis accelerameters?
Reason I ask, this past Sunday morning, I found myself a nice quite stretch
of road with a 55mph speed limit, turned on the unit, calibrated and set for a
0-60mph test.

Stepped on the gas when the light changed, but not enough to spin the tires
much, and shortly put the pedal to the floor. The Katt Matrix reported
a 0-60mph time of 4.136. So, I tried a couple more times. One with just
mashing the gas from the get go (lots of tire spin and nice twin tracks on
the ground) and got a 4.42 seconds from 0-60mph.

My previous best was a 4.3, so these seem somewhat consistent, but I'd
be really amazed if I was turning 4.1 seconds to 60 mph. I did recently
install K&N filters, so I would expect a tiny performance increase, but I'd
be quite pleased to find this device is accurate to within a 10th or two.

Coyote

 

slk32 was advertised as 4.9 seconds stock. you have like 50 more whp than that. plus maybe cooler temps depending on where you live. i think 4.2 is realistic

 

That's what my G-Tech say's my car does on the 0-60, never heard of a Katt Matrix. This run was done with the TC on, just stomping it.

 

Thanks for the input Steve. So, I'm thinking that the Katt can't be too far
off. And from my results, I'd say I get better performance getting moving
with a little throttle, and then pushing down hard on the gas once I'm
rolling. I'd say, shaving nearly a second off the manufacturer stated time
of 5 seconds in the 0-60 dash is pretty awesome.

Coyote

 

I done some runs @ US 41 with the G-Tech on & it was pretty close to matching my slips. So I'd say they are fairly accurate. The picture I posted has the 1/8th on it (8.101 @ 91.86) & one of the slips I have in my gallery shows 8.079 seconds @ 86.49 mph. Comparing the time & mph difference it looks reasonably close.

 

To tell the truth, I'm pretty impressed with shaving nearly 9/10s of a
second off the manufacturer stated 0-60 time with the few mods I've
added. Think I'll need to run over to Dyno Lab and get a new dyno
test. $65 for 3 pulls ain't too bad.

Coyote