My friend has a Gtech RR pro and i did another run yesterday. did 13.155 at 173kmh with best effort. My mods are 5zigen catback and hks mushroom filters. I guess these are decent times but approximate whp was 210. i was like
my car showed hp numbers lower then stock. I would not believe this device but on an all other cars it shows correct numbers. on 350Z it showed 220whp, 395whp on 2007 M5; 210whp on impreza STi. I'm nervous, these are bad HP numbers, somebody tell me it is not possible to run 13.2 with 210whp

 

It's not possible.

 

That device is useless to HP readings.

Go on a dyno to get more accuate numbers.

 

What was your weight input?

 

yeah, the HP output is influenced by the weight you entered like posted above. Put in a lighter than what is acutal and you'll get a lower number and vice versa, since if you put in a heavy number, the g-tech thinks the car is 4000 pounds but the car must be making some serious HP to be moving it that quickly.
If you go to a scale and weigh the car, than put that number in and do the HP reading, it's within 10 rwhp roughly.

Tim

 

i put 1260kg of Type R FD weight plus my weight 83kg. 1344kg total