Finally got my first dyno

[sirius815]

Well after owning the M (95k mi. on the clock) for ~3 years, I finally managed to get a dyno done.



Numbers are 207.55hp@~6k/213.55tq@~4k. (Seems a bit low)

Temp: 64F
Humidity: 27%
SAE: .96

I'll try to get graphs up soon.

Mods: Dinan CAI TB + Chip, UUC RSC36, underdrive pullies, fan delete.

AFRs dipped down to ~12.5 from around 5.25 to 6k. Problem with software? O2s?

Let me know what you think.

[ilya1585]

really? Is that how weak our cars are??

[ls6m3]

Originally Posted by ilya1585

really? Is that how weak our cars are??

Maybe yours. Mine make 437 whp and 423 wtq

[alanilil]

Originally Posted by ilya1585

really? Is that how weak our cars are??

Those numbers are pretty decent. Most stock E36 M3's pull around 200 hp and tq at the wheels.

[Tlow98]

Op
you are usig a dinan tune I take it? Notably, they are on the safe side, however I would think you might have 10 more hps and a few more torque. Tho, dynos are so incrEdibly time/temp/situation dependant. Bet you were below 200 to start according to that dyno. Good for you going to get it done tho, props.

Ilya
lol, Really u didn't know that?

Ls6
let's see some pics of your deep lung vette-hearted German shell........now

[ls6m3]

Originally Posted by Tlow98

Op
you are usig a dinan tune I take it? Notably, they are on the safe side, however I would think you might have 10 more hps and a few more torque. Tho, dynos are so incrEdibly time/temp/situation dependant. Bet you were below 200 to start according to that dyno. Good for you going to get it done tho, props.

Ilya
lol, Really u didn't know that?

Ls6
let's see some pics of your deep lung vette-hearted German shell........now

It's no LS6. Just a GT35R M3, running 14 PSI.

[Tlow98]

Oooohhhhh. Nnnnniiiiiiccccceeeeeeee

[ilya1585]

Originally Posted by Tlow98

Op
you are usig a dinan tune I take it? Notably, they are on the safe side, however I would think you might have 10 more hps and a few more torque. Tho, dynos are so incrEdibly time/temp/situation dependant. Bet you were below 200 to start according to that dyno. Good for you going to get it done tho, props.

Ilya
lol, Really u didn't know that?

Ls6
let's see some pics of your deep lung vette-hearted German shell........now

I just figured chip + pulley maybe around 215 at the crank....I have cams, exhaust, chip, S50 manifold. So my car would probably be 215 on the dyno. Another reason to get an E46 M3 i guess

[sirius815]

Originally Posted by Tlow98

Op
you are usig a dinan tune I take it? Notably, they are on the safe side, however I would think you might have 10 more hps and a few more torque. Tho, dynos are so incrEdibly time/temp/situation dependant. Bet you were below 200 to start according to that dyno. Good for you going to get it done tho, props.

Dinan tune it is. My first dyno run was actually 202. 207.27 for the 2nd. 207.55 was 3rd.

Main reason for getting it done was to see how healthy she's doing. Not too bad then from what you guys are saying. I tried finding comparable dynos, but no luck yet with the search. Must dig deeper I guess.

[ilya1585]

This makes me feel like an idiot spending 2 grand on "go" parts to accomplish what is most likely less than 15 hp

[Hova]

207rwhp is low for an S52.

That being said it does also matter what type of dyno you are using.

I think its time to throw on an M50 manifold

[sirius815]

Dynojet - I've been thinking about the M50 mod for a while, but daily driver - really no need for the added top end (well maybe).

But in any case, I do still get the feeling that 207 is on the lower side, given the mods.

Anyone have any insights to the low afrs?


(I'll try to get graphs soon!)

[BimmerLover84]

On a DynoJet dyno my roomates '97 M3 put down 212whp/218tq bone stock with a k&N drop in filter. At the same dyno day a '96 M3 with a DINAN tune, cold air intake, and an aftermarket exhaust put down 211whp/215tq.

Your car should be around 215-220whp easily. I'd blame the DINAN software, or maybe it isn't meant for your mods? They have Stage 1-5 software I believe. Maybe you should try a shark injector?

[desynch]

M50!

[fsmtnbiker]

My car made almost identical numbers (207hp/214tq) with a CAI, otherwise stock. I don't think it is too out of line... The exhaust doesn't really add any power and the software probably didn't either.

[Brent 930]

Originally Posted by Hova

207rwhp is low for an S52.

That being said it does also matter what type of dyno you are using.

I think its time to throw on an M50 manifold

Lets see, bone stock 240 bhp x .85-.88 (drive train losses) = 204-211 SAE corrected whp.

Seems in line to me.

Now considering a 100k mile motor that could bring that number down 5-10 hp, then with a few minor mods bring that number up and then some.

[bluffrides]

Originally Posted by Brent 930

Lets see, bone stock 240 bhp x .85-.88 (drive train losses) = 204-211 SAE corrected whp.

Seems in line to me.

Now considering a 100k mile motor that could bring that number down 5-10 hp, then with a few minor mods bring that number up and then some.

correct!!

[sirius815]

Yeah I guess that'd be about right. Looking at doing a compression test in the near future. We'll see how that turns out. But based on the numbers, it should come out pretty well.

I'm probably not going to get a new tune yet to fix my afrs until more mods come along. Unless someone else has a Dinan tune and has had better afr results.

[BMWMPow3r]

can you post a dyno graph. Maybe vanos?

[Hetzle]

Originally Posted by ilya1585

I just figured chip + pulley maybe around 215 at the crank....I have cams, exhaust, chip, S50 manifold. So my car would probably be 215 on the dyno. Another reason to get an E46 M3 i guess

215 at the crank? What on earth are you talking about?

And if your car is cammed (like mine) you should be making WAY more than 215rwhp. Some people...

[creeves328]

Post the chart when you can.

The Fan delete is probably not a good thing on the dyno. The lack of airflow over the radiator, even with the dyno-shops fan, will result in higher water temps inside the block. Your dash water temp may not reflect the increase till a good minute later. As a result, your knock sensors would retard timing.

Timing and air intake temps are the biggest factors in regard to numbers.

On o2 sensors, can't be the o2s since you're running open-loop at WOT.

[BeemerBuyer]

I put down 212 ft/lbs and 209 torque with a CAI / Pullies.



I would hope to put down way more with a M50 Mani and a tune.

[sirius815]

Creeves:

I've got an electric puller hooked up in place of the mechanical. Yes I know it's not quite the same air flow. But when you look at the graph (posted up now), numbers improved over the 3 runs. Runs 2+3 and very very similar.

Oh and I forgot about the open-loop at WOT. Thanks.


BMWMpow3r:

I don't think it's the VANOS only because I'm under the impression that VANOS is only active during the lower part of the tach, and then plays no role higher up. My TQ values aren't bad. But then again I could be wrong - my VANOS is making some noise very now and again. Didn't hear any while it was on the Dyno though.

AFRs I think may be a problem. I also need to change my fuel filter which is still sitting in the garage. Would like to also get my injectors cleaned (never had it done). My sparks still look good. I also need to get me a compression kit - anyone know of a good one that won't break the bank - I know cheap and good don't go together.

[Brent 930]

Originally Posted by BeemerBuyer

I put down 212 ft/lbs and 209 torque with a CAI / Pullies.



I would hope to put down way more with a M50 Mani and a tune.

Most CAI's don't help much, same with pullies.

Now if you did an M50 mani it would make a difference.

[sirius815]

True, true - pullies are only really good for 1st and 2nd gear throttle response. Same with lightweight flywheels - they don't really do much for higher gear power.

I haven't done the mani yet, because I kinda like the torque down further for now. When I possibly do cams in the future, the torque curve will move up further in the powerband, but due to other factors, low end torque shouldn't be affected too much.