Street Dyno

[mops 4]

Hello.

I just thought I'll share with you on my latest very cool find.

This software allows you to producte dyno-line graphs of your engine power output. All you need is a laptop, some wire and two resistors (max $1 at local DSE).

As well you will need to know the weight of your car and geat and diffr ratios.

First time I read about it I was a bit sceptical, cos those G-meter devieces that are supposed to tell your car's max HP are very inaccurate. However, let me assure you this thing is damn accrate. I get +-2hp variance between runs. Once I filled up my car the reading was 3 hp worse than normal (i forgot to account for extra 40kg's of fuel).

Best of all, if you have a laptop (even if you dont have a laptop there are alternative ways of getting data to your stationary PC), you can make as many runs as you want/need, as it does not cost you anything.

This software is free, it's a big buggy, but once you get your pickup level calibratred, it works as a charm.

Now, this software is NOT a perfect dyno substitute, as the actual max power/torque figure might be off (possibly due to inacurate wiehgt, worn tyres, wind durning a test run) , but it's the high consistency that is very important here. Now you can do some mods/test fuel additives/etc and measure your results next time you are on the street.

Screeendump of my latest run... e30, 325iC, stock.

I would be pretty keen to see your graphs. If you have E30 325i that was recently dynoed.

Even better... next time you are on the dyno - take readyng with street ryno at the same time and compare real results !

I keen to try out that thing on your car, so we can compare

[EDIT]: forgot the link doh !

Street Dyno Homepage

Edited September 15, 2005 by mops

[Gus 5]

heres mine

[Mavrick 0]

Yeah i saw yours(Gus) and Cains car in the latest performance car. Who's was the bimmer that got 170kw i think? The silver one.

[Gus 5]

is it in PC? might have to get it......the silver one was grants...88kW.

[Grant 4]

is it in PC? might have to get it......the silver one was grants...88kW.

Mind you, that was at less than 5,000 rpm's when mine leaned right out....bloody Motronic 325i ECU on a 2.7.

Cheers

Grant

[cainchapman 0]

I got 172kW and the made a typo for Milan's 730. He got 131kW according to his run, they published 171kW.

Gus, I've got a copy if you want to have a look at NZPC. It was the last dyno run they are publishing too, so we were lucky.

I wouldn't try to compare your results to Gus's. His is doing better than your average E30 325i.

Edited September 15, 2005 by cainchapman

[Guest Andrew]

me max result was 137 kW at wheels - expecting a bit more once we get the headers + new injectors in.

p.s You can't even compare real dyno results for power readings let alone a "pretend" dyno.

The numbers mean bugger all.

[Mavrick 0]

Yeah i was wondering how he was getting 171kw out of a 730.

Was mint to see four bimmers on the dyno.

[mops 4]

me max result was 137 kW at wheels - expecting a bit more once we get the headers + new injectors in.

p.s You can't even compare real dyno results for power readings let alone a "pretend" dyno.

The numbers mean bugger all.

137kw, what engine was that ?

what sorta mods ?

[Guest Andrew]

me max result was 137 kW at wheels - expecting a bit more once we get the headers + new injectors in.

p.s You can't even compare real dyno results for power readings let alone a "pretend" dyno.

The numbers mean bugger all.

137kw, what engine was that ?

what sorta mods ?

m20 b25 -

not exactly stock

Link ECU

Full rebuilt

Lightened Crank, Con rods, Flywheel full balance - Gasket blueprint

Rebuilt medium-port 323 head (raised compression)

Headers (getting made)

Intake - a pipe will do since I don't need the AFM

Injectors maxed out making that power

[325GRANT 0]

did you download this free???

it wont open for me, says not registered

[mops 4]

did you download this free???

it wont open for me, says not registered

sure... free download on that site. you need to get the older version, not the version 1.0