Boosted Falcon

Just interested in people's throughts on this topic.

Example:

Lets say a 350rwkw auto car runs a 10.5 @ 125mph
Would you expect a manual car with the same power to run 125mph as well?
Obviously the time would be slower but would you expect the MPH to be roughly the same?

Well, not really.

The auto will have more power (if the same dyno) at the engine then the manual, because autos read less power on a dyno.

But if you had 2 cars the exact same, one auto and one manual both with eg: 550fwhp the manual one will run a higher mph.

I'm interested to see iCERs input on this topic.

if both cars are identical power at the rears and weight,so on and so forth.
The auto will be the winner unless the bloke driving the manual is a demon shifter.
Drag racers generally do autos as it cuts down shift time,unless its an air shifted lenco.
As for the manual running the same time,no due to shifting time.

Yeh I no that auto would be faster in every way, more talking at the difference in mph between the two. Probably abit of a noob question Nut but why would the manual run higher mph then the auto?
Also interested in icer's input

Just to clarify, you can't compare RWKW with a manual and auto car with the same specs. It needs to be fwkw.

Michael, an auto will accelerate quicker and finish sooner over 400m, which means it picks up less speed.

A manual takes longer to complete the auto so picks up more speed (if that makes sense??)

I hope I'm right lol.

Michael (HYPOEB) wrote:Yeh I no that auto would be faster in every way, more talking at the difference in mph between the two. Probably abit of a new question Nut but why would the manual run higher mph then the auto?
Also interested in icer's input

I have only seen the mph higher out of a manual a couple of times over the years,couldnt tell you why.
I am also interested in nuts answer to this.
Possibly some mathematical theory or enersia (sp).
Maybe he could show us practically ,with a real life trial towing Raymond daley?

Yeh I'm with you, it makes sense! Lol

Surely converter slip comes into this.

Though unless your dynoing just the motor you wont get two 350rwkw cars that are auto and manual. The autos probably 400+ depending on the auto and how the stall is built.

Which is why I said fwkw.

I did some googling, auto cars get to a peak quicker but stay there (eg: 115mph) because of converter slip as psipop said, but a manual car will keep accelerating. But you have to have similar diff gears.

So many different scenarios can change the outcome though

Even shift times would change MPH in a manual. Slow shifting = less time accelerating = momentary coasting = lower mph. There wouldn't be much in it though, maybe 1-2mph.

My el on the exact same tune went from 10.6 @ 140 with manual to 9.6 @ 142 with auto no other changes at all..

on the dyno it went from making 800rwhp to 700rwhp going from manual to auto and no other changes

sorry just saw this thread

Auto will always run faster down the track. PEnding how lose the convertor is (if any) will determin MPH.

* Manual will run a slower time but more MPH then an auto with same power no convertor
* Manual will run a slower time but similar MPH then an auto with same power on dyno with a convertor (pending how lose it is and how much it chews up on dyno (roughly 20-30rwkw average) as the manual will pick up more top end.

Welcome

Yes, because the guy with the theoretical 9 second car knows more than the guy with the 9 second car

Fritzz wrote:My el on the exact same tune went from 10.6 @ 140 with manual to 9.6 @ 142 with auto no other changes at all..

on the dyno it went from making 800rwhp to 700rwhp going from manual to auto and no other changes

Interesting, that's a good example.
Were you using any type of 2step/launch control back when you were using he manual?

Yeh was using the launch control in the autronic

I plan on doing the same with the motec.
Where ou also using the flat shift? (If the Autronic has that)

Does anyone know if an auto will be quicker over the quarter?

Hopefully someone can chime in with a fucken obvious answer.

Michael (HYPOEB) wrote:I plan on doing the same with the motec.
Where ou also using the flat shift? (If the Autronic has that)

I did start to set up flat shift but never got around to using it, would be awesome if it was set up spot on, would make massive difference to times

I always thought it was more along the lines of when the cars run the same quarter mile times that the manual will always have higher mph. Which seems to ring true with fritz stating that by only changing from manual to auto and nothing else he has ran 1 second quicker, with 2mph more with the auto.

Auto cars have the benefit of torque multiplication in the converter, where a manual is 1:1 lock up in each gear.

This is one reason why an auto car ( with a good converter ) can et quicker.
But when both cars are in top gear the auto will still have some converter slip, than manual car wont.