I have run on Dyno today

[jojoejoez]

The red graph is run on 31/1/2004
The blue graph is run on 19/5/2005




Total is 174 ps

E30 M20 325is

[H35-IAN]

is that standard though dude ??

[astondg]

Is that at the flywheel? Is it estimated from the at the wheels figures?

What changed between the 2 dyno runs, what modifications or stuff? Looks like a good midrange, max torque of 260Nm seems ok and a big improvement 3000rpm to 4000rpm. Pity about the low end though and the slight drop high up. Did you put in a cam or something?

Do you have a chip? Might be helpful if you have other modifications, especially a camshaft, to get more fuel and stuff which might help the top end.

If it is standard than it sems ok to me, isn't 174ps about right? And I think 260Nm is higher than a standard car?

Aston

[jojoejoez]

I have

Chip
Custom made header and 2 inch pipe
13 lb flywheel
AC Schnitzer exhaust muffler system

The red graph I didn't do anything with my engine
the Blue graph i have some modify with my engine


Next I'm looking for Eta bottom to be 2.7 Thanks for all advice. and i have some question with my engine If i put M50 2500 cc injection with M30 AFM and MSD ignition wire set how is it going thanks

[m1key]

can u take an auto on a rolling road ?

[Andy335Touring]

can u take an auto on a rolling road ?

Yes

[astondg]

Did you get the chip tuned for the modifications you have? You really shouldn't have lost that much torque down low, it's not even that low (up to 3000rpm or something). The chip should have made up for any slight losses because of the exhaust system, some exhaust systems don't loose any low down torque anyway.

I don't have much experience with this but if that was my dyno I would be very happy with the mid range gains but also very dissapointed at the loss up to 3000rpm. The biggest gain is only half as big as the biggest loss. Was there anything different between the runs? Same dyno, similar temperatures, etc. ?

Aston