Curb weight?>>>>>>>
 

In the spec sheet, curb weight on the 99
CobraCpe is 3430 lbs....do you add to that:
coolant+oil, then amount of gas...that would
bring it to ~3450+45(1/2 tank gas)=3495?

I going to try to syncronize a G-TechPRO with my dyno results, to evaluate any future mods.
I know to add driver's weight...I could use
reverse engineering(trial & error) with the G-Tech, since I am working with known dyno results.

<C>
99CbrCpe
280.1rwhp/289.0rwtq
k&n filter, no mods

The Curb weight includes oil, coolant, etc.

Just add the driver's wait and you will be fine. I could never get my GTEC's Dyno to work right. I had 314rwhp and all the GTEC showed was 265rwhp.

Maybe you will have better luck.

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'94 Cobra
308ci, ported GT-40 heads, Crane 2031 cam .513"/.529" lift 276°/282° duration, 70mm TB, Custom 80mm MAF, JMS chip, Vortech S-trim 8#, MSD, TREX fuel pump, Accel coil, 3.55's, FMS 1 5/8 headers, BBK Offroad H-pipe, and 2-chamber flows.
1994 Mustang Cobra
Check out the pics of my Motor Buildup!

My 00 GT had a 3300lb weight in stock trim without driver and 1/8th tank of gas.

Rebe179...
It looks like you showed -49rwhp..Gtech
v. dyno results (weight critical factor w/Gtech)... but I think you have to adjust the readings for wind resistance...dyno would read higher than real world driving because of no wind resistance..also dyno is corrected for perfect conditions & altitude, temp. etc. for stadardized comparisons...I don't know how the Gtech handles this, I haven't gotten it yet & will have to read instructions...but I figure if I always Gtech using same gear(probably 2nd for rwhp), and consistent curb weight & climate conditions...I should get a baseline to measure my mods...How did your Gtech 1/4 ET & trap speeds compare with time slips & what gear did you use to measure your rwhp?

<C>
99CbrCpe
280.1rwhp/289.0Tq
k&n/no mods

99 GT = 3250 with less then 1/8 tank of gas.

Well, I never have tested the 1/4 times w/ my GTEC. I believe that the GTEC has a more accurate ET than the track because the track just estimates your time. The GTEC will also be off 3-4 mph on your trap speed.

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'94 Cobra
308ci, ported GT-40 heads, Crane 2031 cam .513"/.529" lift 276°/282° duration, 70mm TB, Custom 80mm MAF, JMS chip, Vortech S-trim 8#, MSD, TREX fuel pump, Accel coil, 3.55's, FMS 1 5/8 headers, BBK Offroad H-pipe, and 2-chamber flows.
1994 Mustang Cobra
Check out the pics of my Motor Buildup!