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Manual Vs Auto Mph


JETURBO

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  • Member For: 11y 11m 16d

I found I was only slightly lifting between gears (noticed a spike on the tacho) and certainly didn't hear the BOV like you would on the road.

13.2@108 all stock manual.

Fwiw, the stock BOV seems to vent quite slowly (ie its not a TSCHT! more of a Tsssssssschaa) and I'd imagine this helps retain intake pressures off throttle. Reducing lag on gear changes.

Had a side by side pass with an auto, and every change saw him creep forwards about 2-3M.

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  • EVIL T
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  • Member For: 15y 11m 1d
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  • Location: Liverpool NSW

slightly old thread, but dynos readings vs mph is very inconsistant.

in my BF2 manual with 295rwkw, street tryes, I did 12.9 @ 118mph, 2.2 60ft (bogged down)

as a stocker with 205rwkw same dyno, street tyres, I did 13.4 @ 105mph, 2.0 60ft (almost perfect launch)

118mph seems high for 295rwkw, but dynos arnt gospel...

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  • Manual mode ________________________ All day, erryday
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  • Member For: 16y 11m 17d
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  • Location: Probably above atmospheric pressure

That's below stock mph?

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  • less WHY; more WOT
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  • Member For: 16y 7m
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  • Location: Melbourne

BA mk2 F6 typhoon... I'll re-check the figure... 110.34mph 285rwkW

Edit: it was 102mph when I missed a gear hahaha

Edited by k31th
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  • Manual mode ________________________ All day, erryday
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  • Member For: 16y 11m 17d
  • Gender: Male
  • Location: Probably above atmospheric pressure

More like it!

Also

Very interesting. I went 118mph with 330kw with a 6 speed manual. What mph does a 310odd kw auto get ?

I ran up 317rwkw on XFT's Dyno Dynamics brand dyno in 2010. I trapped at a highest of 121mph, with 120mph on my 11.9 PB. Raced a month or so after it was tuned.

The same tune years later was 322rwkw on the Mainline they now use.

Edited by -SteveR-
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  • Member For: 12y 5m 14d

Since every dyno is going to read somewhat differently and how the car makes power with different ambient temps is going to give variations in power compared to trap speed. The way both cars are tuned would create variations - the power curve also has to be considered too not just the peak power reading as your always putting down different amounts of power from standstill to finish not just one figure.

I'd say if you had 2 cars that were 100% Identical in rear wheel power and the way they make their power across the rev range, the Auto will be quicker by a bit as you would lose some acceleration on the manual when your shifting gears.

Edited by Z2TT
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