Well here I go. My car was previously tuned at BTA where they told me I had 327rwkw. I Took it out to the strip and did a 12.6 (on street tyres and a 2.18sec 60foot) I thought it would have gone better than that, so I switched tuners to C&V. When I got there (C&V) they did a power run and told me its only got 280rwkw. So I believed them and agreed to get a brand new tune and a 12 pound actuator. When the tune was done, I was told I got 338.9rwkw, I thought that was great, a 58rwkw gain. A few months went past then I decided to get a minor issue fixed (engine cuts out at high revs). This problem was always there since the first tune I had and was independent of how much power I had. Anyway, got it fixed at C&V, and they told me I now had 325rwkw. Bit of a drop from 338.9rwkw on the same dyno. Nevertheless, went down to the strip a few weeks ago, same tyres as previous, almost same 60 foot time as well(2.16 secs), and the best I could do was 12.7, and I was averaging 12.9. Do this make sense to anyone?? It doesnt to me. And mind you the latest run was in June (cold as). The question is, who do we believe when we take our cars to these places? The car has drilled injectors, bolt on F6 intercooler, fuel pump, 4 inch dump with 3.5 inch exhaust system (x-force), 12 lb actuator. With figures into the 300's am I asking too much to get a low 12 or even 11? I know with a better take off (MT semi's) I can improve my time but it doesnt make sense to me how a 45rwkw gain can give me no improvement (or even reduction) on my 1/4 mile time. Keep in mind that in stock standard form, I did a 13.8 (stock everything). Anyway....thanks for listening..feel free to reply.