Originally Posted by pizzamanevo8

Yeah when the parachute deployed and he hit his brakes! Our cars would have awesome times if the gearing was better and powerbands! You see some cars are doing this in 1 shift. We have to do multiple shifts. We should come up with our own mph to mph that's more suitable to our cars and start a thread! What's your thoughts?

Originally Posted by RJSP

Oh, i asked about what gear because with my current gearing (1.407 3erd and 4.529 FD) I can´t reach 100 mph in 3erd as it tops out at 93 mph at 8000 rpm moreless. It would be a lot worse if I still had my original V RS tranny with 4.875 FD .

RSmike, correct, it was a wot third gear pull started from around 2.7K rpm (at about 30 mph) all the way to 8K rpm and I just look for the time stamp for 40 and 80 and use both first-first and last-last time data recorded for each speed to have the times I posted.

pizzamanevo8, I´ve read all about your "pizza bish" and it´s really impressive, I´m still on my stock ported 12 year old Evo V turbo at 26-27 psi peak droping to like 19-20 by redline. I´m learning as I go and experimenting to see how much more I can get out of this turbo before moving on to a HTA Green or similar, then I´m sure my car will have some better acceleration times.

Cheers,

Ricardo

Originally Posted by RJSP

It´d be nice to have a mph to mph test tailored to our cars. About the 60 - 130 mph times posted, do they start wot at 60 mph or is it started earlier?

Cheers,

Ricardo

Originally Posted by RJSP

Hi Guys,

I´ve seen that the 40 mph to 80 mph times in 3erd gear are sometimes mentioned as a measure related to power/performance of a car (in the UK at least). So I´m looking at the time stamps vs. speed in my last log and this is what I get:

Taking fist reading at 64 kph (about 40 mph) and first at 128 kph (about 80 mph), time span is 3.552 sec.

Taking last reading at 64 kph and last at 128 kph, time span is 3.535 sec.

Is this performance decent? My car weights 2989 lbs with me in it and between full and 1/4 to full gas tank. I run with RPF1 wheels that only weight about 15.5 lbs. each. On average VD in Dynojet mode gives me around 355 whp 345 Wtq.

Cheers,

Ricardo

Originally Posted by l2r99gst

That sounds about right. Looking at one of my old logs I show about 3.3s 40-80. Sock VIII, full weight SSL (even heavier), showing 400whp on VD (E85, 30+ psi).

Originally Posted by RJSP

That looks good! Wish we had E85 in Peru... maybe in the not so distant future. For others looking at their logs, just wanted to mention the importance of using either the first 40 and first 80 time stamps, or last-last, and/or an average of those two times. I know you all know this, but if I took my last 40 mph time stamp and the first 80 mph time stamp I would get 2.92 seconds, but that is just not realistic.

It´s a pitty that speed doesn´t reflect changes when logging as fast as rpm and other values, it seems to lag a little behind.

Here is my log of that 3erd gear pull.

Cheers,

Ricardo

Originally Posted by l2r99gst

I used DMA logging and 2 byte RPM, so that wasn't an issue. If you simply log speed, there is too much of a step between values and a slow logging speed will add errors on top of that. But, it will still be good for comparison, and as long as you take the first entry you find for each, you'll have a good enough estimate.

If you're using EvoScan, just treat it the same way you would for a VD run. Just log RPM 2byte (as I see you have in your log) and use your gear ratios to figure your speed. Then, you should have many more lines of data and more accurate 40-80 times.