Dyno graph of S50.

[So Live]

Schwing!!

[mazur]

New graphs with the new "exhaust" set up!

Coming soon, to a forum near you.

[So Live]

New graphs with the new "exhaust" set up!

[rneedham1979]

Ah thanks.

[mazur]

I don't know, because I have never had it without. Now I'm turbo, so it gets all kind of hot under there.

[rneedham1979]

Have you noticed lower under hood temps with the exhaust coating?

Thanks!

Ryan

Actually they were ceramic coated in and out to keep the heat in. The coating that comes black is the one made to stand 1600*F. It was about $250.

It's like Jet-Hot, only mine won't fade over time.:p

[mazur]

Fixed the attachment.


Yah, I wish he had shootout mode but what you gonna do...

[digger]

I didn't get AFR's this time around because I have a slight exhaust leak and it would show up lean. But here's a graph of the same engine (when I had it in my M3).

Mods were: Stickley chip, intake, injectors, 3.5'' HFM, and underdrive ltw crank pulley.

you didn't attach the other graph!!

some other graphs from the same shop

similar mods (but v.rich running at topend)

http://forums.bimmerforums.com/forum/showpost.php?p=6149485&postcount=39

A stock one (perhaps not at its best)

http://www.m3forum.net/m3forum/showpost.php?p=346916&postcount=67

all numbers should have been done using shootout 6 (6 cylinder NA correction) which accounts for Temp, RH and Pressure amongst other things don't know whether this was done but thats whats used in Oz.

The numbers are high but a second opinion on a dynojet will verify that this is a stronger motor than most which it likely is.

On the dynojet vs dynodynamics people claim add 15% to the dydnodynamics figures but there seems to be quite a spread of figures from dynodynamics dynos from my experience with all cars. The difference between the two is much closer in most cases (atleast NA cars.....500rwhp + the difference has been shown as sizeable probably due to fixed ramp rate c.f to large roller) and people have found that there are very conservative and very optimistic machines around.

[mazur]

I didn't get AFR's this time around because I have a slight exhaust leak and it would show up lean. But here's a graph of the same engine (when I had it in my M3).

Mods were: Stickley chip, intake, injectors, 3.5'' HFM, and underdrive ltw crank pulley.

[nando]

One thing to keep in mind too, here in Phoenix the 1200+ ft altitude does come into play with HP numbers.

nominally, it's a 4-5% difference. it's more than nothing but likely already factored into the dyno.

[mazur]

I have the same headers and was thinking about painting them black. What method did you use to paint them black ? Cheers Brian

Actually they were ceramic coated in and out to keep the heat in. The coating that comes black is the one made to stand 1600*F. It was about $250.

It's like Jet-Hot, only mine won't fade over time.:p

[bwh13]

One thing to keep in mind too, here in Phoenix the 1200+ ft altitude does come into play with HP numbers.

[mazur]

Yah, I agree mostly, but dynos around me seem to be quite consistant. When the engine was in my M3 it dynoed the same exact numbers 6 months in between.

The E46 M3 dynoed right after me. An S50 E36 M3 dynoed 208rwhp with chip.

[digger]

I think this thread illustrates why

1) comparing different cars from different dynos/operators on different days is pointless
2) using a dyno just to get a peak HP and TQ # to brag about is pointless
3) getting a baseline for your car from the same dyno/operator with similar conditions is important

nice curves, flat torque.. but it really doesn't tell us a whole lot without a baseline of your motor when it was stock.

+1

[bostonbmw]

Just bought a 90* silicone hose that goes from 3.5'' to 3'' and fitted the ICV and crankcase vent tubes to it.




Only these...






I don't know. This is the only example I have seen of a stockish M3 on this Dyno Dynamics. Owner claims that you have to add 25% to the readings for a standard tranny to get HP. Sounds a little too optimistic, but I believe it does read a tad lower than a Mustang dyno in my experience with dynoing with both with same car.

I have the same headers and was thinking about painting them black. What method did you use to paint them black ? Cheers Brian