boosting Member 31 Member For: 16y 6m 19d Gender: Male Location: sydney Posted 13/08/09 02:52 AM Share Posted 13/08/09 02:52 AM 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. Link to comment Share on other sites More sharing options...
azasturbo Member 206 Member For: 15y 11m 14d Posted 13/08/09 03:04 AM Share Posted 13/08/09 03:04 AM Theres alot more to a quarter mile time than a power output on a dyno, Lots of things come into it driver, tyres, launch, gearing, condition of gearbox/clutch, torque, how the power is delivered etc. Did you tell the tuner you were chasing quarter mile times etc etc etc. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 7m 1d Gender: Male Location: @ my laptop Posted 13/08/09 03:09 AM Share Posted 13/08/09 03:09 AM your mph is a better indication of the power you are making, ET will tell how well it hooks up, how you drive it etc Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 21d Gender: Male Location: SW Sydney Posted 13/08/09 03:10 AM Share Posted 13/08/09 03:10 AM Is there a difference in the MPH? I'm guessing you would've been aroun the 115mph mark - maybe a little higher? Link to comment Share on other sites More sharing options...
boosting Member 31 Member For: 16y 6m 19d Gender: Male Location: sydney Posted 13/08/09 03:13 AM Author Share Posted 13/08/09 03:13 AM the best I could get is 180km/h = 112.5mph Link to comment Share on other sites More sharing options...
boosting Member 31 Member For: 16y 6m 19d Gender: Male Location: sydney Posted 13/08/09 03:15 AM Author Share Posted 13/08/09 03:15 AM and the worst was 178km/h, which is the same range as what I did on the first tune. Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 21d Gender: Male Location: SW Sydney Posted 13/08/09 03:30 AM Share Posted 13/08/09 03:30 AM Maybe try reducing the rpm shift point - I found that going to 6000rpm didn't help, best results were when shifting between 5250 and 5500 Link to comment Share on other sites More sharing options...
jacob_xr6turbo Donating Members 433 Member For: 17y 3m 17d Location: Richmond, Melbourne Posted 13/08/09 03:34 AM Share Posted 13/08/09 03:34 AM what did bum in the seat-o-meter tell you? 58rwkw is a crazy increase, did it feel crazier?Only way to be sure is to take it somewhere reputable.. Mick from pitlane did everything to mine, said it made between 292 and 300 on multiple runs, etc..I took it to a dyno day last week and ran it on a dynamics dyno and it made 290rwkw, pretty spot on!I guess it's all about who you trust. Link to comment Share on other sites More sharing options...
boosting Member 31 Member For: 16y 6m 19d Gender: Male Location: sydney Posted 13/08/09 03:38 AM Author Share Posted 13/08/09 03:38 AM doesnt feel faster at all....but it should.And Ive always changed gears at 5000-5200rpm Link to comment Share on other sites More sharing options...
Robos F6 Donating Members 407 Member For: 15y 9m 27d Gender: Male Location: Vic Posted 13/08/09 03:41 AM Share Posted 13/08/09 03:41 AM With an extra 58rwkw should equate to approx 5mph more. I would say with 112.5mph you couldnt be running 339rwkw. Not sure what the problem is here, again, did it feel like an extra 58rwkw or is a just a dyno paper gain? Link to comment Share on other sites More sharing options...
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