anybody have before n after dynos of a SC kit on an e46?

**masstar** · 10-22-2002, 12:42 AM

Id like to see some before and after dynos of SC kits...none in particular im just curios how a SC behaves at different rpms in the TQ and HP bands. I saw one comparrison that looked like it lost HP down low, i suppose because of added drag and no boost rpms yet. thx.

**masstar** · 10-23-2002, 10:32 PM

alright, it doesnt have to be an e46...just any bmw with before n after dynos of a Supercharger. thx.

**SilverStreak** · 10-23-2002, 10:54 PM

Do you want the actual dyno sheets scanned in jpeg format, or simply the results?

**Mitch P.** · 10-23-2002, 11:16 PM

for simplicity, just go to www.dinanbmw.com and look up the dyno curves that they show for the E36's, E39's, and others. For the most part, you can guarantee almost a 100hp+ gain.

**SilverStreak** · 10-23-2002, 11:36 PM

Yeah, my car went from ~198 rwhp to ~321 rwhp, and from ~193 rwtq to ~290 rwtq....

**JawKnee** · 10-24-2002, 12:49 AM

<a href="http://www.my330i.com" target="_blank">MarvelPhx</a> plans on putting his ESS SC'd 330i on the rollers really soon, perhaps this week.

I believe JetBlacke46 did some runs with his RMS SC'd 323 with not so great results. He's posted some issues with his car here.

No offense, but I just don't understand why someone wouldn't want to dyno his car ASAP after spending a decent amount of money for a FI kit to validate the claims and ensure everything's okay. I know of a few...

**SilverStreak** · 10-24-2002, 12:55 AM

Actually, the place that did my install dynoed it before the mods for baseline #'s and the after results came from the tuning session...

**JawKnee** · 10-24-2002, 01:25 AM

ESS e46 323 step...

<i>
What I did between last time dyno and this time.
Reset adaptation ... basically, disconnect the battery for 15 minutes and reconnect again. I had to do this since there was a boost leak, it was fixed and reset adaptation is neccessary(according to ESS).

Weather today (according to weather channel):

Dew Point: 63°F
Humidity: 100%

Here is the result:
MAX HP: 199
MAX TRQ: 166
MAX Boost: 6.5

Dynoed on SuperFlow WinDyn
The Air Fuel ratio is a little lean. I will contact ESS about this.
</i>

**masstar** · 10-24-2002, 07:31 PM

thanks guys. Silver, i would like to see jpegs, but numbers is fine...I checked out the dinan graphs and it looks like the kit records gains across the entire power band. I saw some results recently that looked like a loss of power below 2500 and nothing positive until 3500...So I became curious if that was the norm...doesnt look like it. Did you feel an increse throughout your power band or not really until above 3000?

**///MINI** · 10-24-2002, 07:50 PM

Base OEM dyno with JC Shark Injector (212) and RMS SC Stage 1 dyno (295)

**///MINI** · 10-24-2002, 07:51 PM

RMS SC Stage 1 after a couple of weeks (320).

**///MINI** · 10-24-2002, 07:53 PM

I had another Stage 2 run at 332 rwhp, but can't find that chart.

Here is the RMS Stage 3 (385) Mustang Dyno run on the RACE chip. The STREET chip pulled 370 rwhp on the Mustang dyno.

**///MINI** · 10-24-2002, 07:58 PM

The Dynajet chart with A/F ratios for the RMS Stage 3 (383 rwhp)

Sorry so blurry...this is the STREET chip setup which pulled 370 rwhp on the Mustang dyno. You can extrapolate that my RACE chip setup (that has a much smoother A/F tuning) may pull somewhere in the 400 rwhp range on a Dynajet.

**///MINI** · 10-24-2002, 08:08 PM

Actually, I found the RMS Stage 2 Mustang dyno...

Again, my scanner is on the fritz and I had to take a crappy digicam pic. (332 rwhp)

**masstar** · 10-25-2002, 12:30 PM

Those are some impressive numbers! Thanks for the charts, looks like positive gains at all rpms. good news.

**///MINI** · 10-25-2002, 12:43 PM

Glad to help!

**SilverStreak** · 10-28-2002, 08:12 AM

Sorry, been away since Thursday night... I feel and the chart relfects this, although I do not have it scanned (no scanner) slightly more power as early/soon as 2000 rpm, and exponetial growth in more power as the rpms build all the way to my 6500 rpm redline.

**paul e** · 11-11-2002, 12:28 PM

>> had another Stage 2 run at 332 rwhp, but can't find that chart.

Here is the RMS Stage 3 (385) Mustang Dyno run on the RACE chip. The STREET chip pulled 370 rwhp on the Mustang dyno. <<

Thanks for all these charts. MRoadster, you said your first stage I dyno produced 295 hp; then a couple wks later, you pulled 320! Can you explain why the 25 rwhp increase? Also, on all your stages, did you have your car custom tuned by Osh, or, were you running a stock program he gave you? For instance, in your Stage III plot, I like very much the afr curve which you got. Was this one a stock program from him, or custom tuned on your car? Thanks.

**///MINI** · 11-11-2002, 12:36 PM

Originally posted by paul e
>> had another Stage 2 run at 332 rwhp, but can't find that chart.

Here is the RMS Stage 3 (385) Mustang Dyno run on the RACE chip. The STREET chip pulled 370 rwhp on the Mustang dyno. <<

Thanks for all these charts. MRoadster, you said your first stage I dyno produced 295 hp; then a couple wks later, you pulled 320! Can you explain why the 25 rwhp increase? Also, on all your stages, did you have your car custom tuned by Osh, or, were you running a stock program he gave you? For instance, in your Stage III plot, I like very much the afr curve which you got. Was this one a stock program from him, or custom tuned on your car? Thanks.

The guys at Curry's were dumbfounded as to why the increase in power. We speculated that it may have been the software adapted coupled with the more snugly-fitting air intake. I used a plastic one from an M3 before and then Osh sent out the proper M Roadster one.

Stage I and II used the generic software mapping. Stage III was custom tuned by Osh at the Curry's Clash. Osh also disable the adaptation.

**stimpee** · 11-11-2002, 09:11 PM

Originally posted by ///M Roadster

... Osh also disable the adaptation.

As I mentioned before, as good as Osh, and some of these other tuners are, they have a lot of difficulty, or are downright unable, to properly tune these cars beyond a very low level of performance, without disabling adaption....

I just gotta believe that someday this is going to be a problem. Eventually, the EPA is going to come knocking on the doors of the performance aftermarket, and it is not going to be pretty!!!

Not to mention, what is going to happen over time as components of your car change and wear? Your state of tune is also going to change as well, and it will go downhill from there.

Just seems kind of scary to me...

Steve

**zenon** · 11-11-2002, 10:05 PM

If he markets all kits for "off-road use only" then he's fine it's all his customers that'll be in mud.

Porsche seems to do fine with OBD-II and adaption etc. on high boost turbo motors what's so different with them steve?

**Mitch P.** · 11-11-2002, 10:22 PM

okay so I'm thinking something here. If we are all doing pulley bumps will adaptation over time negate some but not all of the immediate gains? I've always done all my dyno's right after the pulley change and haven't been back since. Am I totally off base here?

**paul e** · 11-11-2002, 11:06 PM

>>As I mentioned before, as good as Osh, and some of these other tuners are, they have a lot of difficulty, or are downright unable, to properly tune these cars beyond a very low level of performance, without disabling adaption.... <<

Steve and Phil, how do you mean, he disabled the adaptation? Are you saying that he has prevented LTFT values from operating on the static WOT maps he has generated? Or are you saying he has stopped the car from adapting altogether in closed loop running? If its the latter, I would think this would have deleterious effects for all part throttle use. This part throttle, closed loop adaptation is a real advantage to streetability in a variety of conditions I would think, and I would definitely not want it removed, even for the sake of some additional ponies at open loop. Dont want to throw out the baby with the bathwater.

If you mean the former, Im fine with that.

**stimpee** · 11-12-2002, 07:32 AM

My understanding is that it is "disabled", meaning completely disabled...

Mitch, if the car is tuned "properly", then nothing is going to get "undone" although there is plenty of info to read on why it is very difficult to get consistent dyno readings with OBDII cars due to the effects of adaption. I honestly don't know THAT much about it, so I won't comment too much further.

As for Porsche and others, it makes a big difference if the car and DME are designed for forced induction from the factory and made to work together. Nothing inherent in OBDII that makes it not work, just makes it more difficult as an "add on".

Steve

**paul e** · 11-12-2002, 09:10 AM

>>My understanding is that it is "disabled", meaning completely disabled<<

For anything but a dedicated track car, I think this is crazy. Everybody thinks that because its hard to tune within OBDII realities, that makes it a bad system. NOT!!! Its largely what makes most cars so reliable today. It not all for the emission nazis. I dont know about you guys, but I LIKE the idea that if my fuel filter gets progressively clogged over time, adaptation makes it possible for the car to run without blinking an eyelash. Things like that. Why would you want to give that stuff up, when its responsible for making you run near peak performance most of the time? You dont hear Jim C go around bashing OBDII do you? Thats because hes learned to use it to his advantage. Like I said earlier, you dont want to throw out the baby with the bathwater.

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