Dyno graph of S50.

[1990m3]

Mods:

-Stickley Chip
-24# Inj.
-3.5'' HFM
-silicone 90* bend (replaces accordian)
-Amsoil intake filter
-Coated "Ebay" Supersprint header knock-offs
-2.5'' Single exhaust with Magnaflow cat, resonator, muffler
-10# JB Racing flywheel
-Clutch fan delete

That's almost identical to my setup list. I'm using OBDII header with an AA track pipe though, and conforti chip...very cool dyno results. I was always figuring my car for about 220-230rwhp, your numbers are very good especially on a typically low reading dynojet.

[2002maniac]

Conforti 3.5" CAI,
Euro MAF
Conforti Cam Software
Shrick Cams
24lb injectors
Stromung Exhaust
Fan Delete w/ 16" Spal fan
UUC UDP's
Eurosport OBDI Manifold kit
AST Delete

So an S52 with schricks only made 4hp more than you? I suspect some kind of error.

[matt]

So an S52 with schricks only made 4hp more than you? I suspect some kind of error.

+1

The graph is waaay smooth too. Either it's being normalized or the chip is leaving a lot of power/torque on the table in favor of smoothness.

[madjurgen]

Cammed motor only went up to 6800rpm, Mazur took his up to 7250rpm. And yes a cammed motor will keep making power up to 7200.

[ed94r]

Mazur,

Good looking numbers for a 3L. Are their any DynoJet facilities near you? I would like to see a DynoJet SAE print of your motor.

I dynoed 226 on a DynoDynamics, then took it to a friends Dynojet hoping that it would make 235+ (because we have all heard that DynoDynamics read Low) and it only did 218 SAE. I had it done again at the DynoJet and it read about the same as the first time.

I have a feeling that the DynoDynamics operators in this country are monkeying around with the calibrations, because they own the heart breaker dyno, and nodody wants to spend money on a dyno that reads low.

If you are reading 240+ SAE on a dynojet with a non-cammed 3L, I will be stunned.

Don't take this post the wrong way, I'm just curious about DynoDynamics and how they compare. I have seen that they read 10-15% lower than a Dynojet, but in my case (and I suspect yours) that the theory may not hold water.

Ed

[nando]

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.

[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

[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

[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.

[bwh13]

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

[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

[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 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.

[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]

Fixed the attachment.


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