Yep great run. I found that I can just stick the dragy device under the passenger seat headrest, it fits snug and haven't had a problem, stays put. That way I don't have mess with putting something on the dash, etc... I gotta do some runs tomorrow, it was wet today.

 

Getting some good results with my new JB4 tune on my GTS. Original boost is around 16 psi. Using map four I get 22 psi. I think I’m running around 450 Hp.

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Getting some good results with my new JB4 tune on my GTS. Original boost is around 16 psi. Using map four I get 22 psi. I think I’m running around 450 Hp.

Interesting... what's the impact on 0-100 time? How about driving 'feel'?