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      03-05-2017, 10:54 AM   #89
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Quote:
Originally Posted by chewbakam4 View Post
Raced an N54 last night with all out upgraded turbos FBO meth, me just on this map on 93 nothing else and we were dead even. He just dynoed at 630whp. I really thought he'd take me. Vid next time.
Driver mod. 630whp > 550whp'ish so he should have taken you all things considered... unless his dyno is inflated BS.
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      03-05-2017, 01:40 PM   #90
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Not necessarily. Most 'big power' N54, N55, S55 dynos I see have a 'mountain' power distribution where power falls off significantly in higher RPMs. If someone is peaking at 600+whp at 5000-5500 rpm but falling off a cliff to, say, 510whp at 7300, another car making peak 550 at 7000+ can easily be faster in a roll race.

It's all about the shape of the curve in this case.
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      03-05-2017, 03:01 PM   #91
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Quote:
Originally Posted by Reach View Post
Not necessarily. Most 'big power' N54, N55, S55 dynos I see have a 'mountain' power distribution where power falls off significantly in higher RPMs. If someone is peaking at 600+whp at 5000-5500 rpm but falling off a cliff to, say, 510whp at 7300, another car making peak 550 at 7000+ can easily be faster in a roll race.

It's all about the shape of the curve in this case.
Lets also not forget weight....
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      05-28-2017, 10:10 AM   #92
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Quote:
Originally Posted by proTUNING Freaks View Post
The 6MT car is awaiting on an intake to arrive from SSR Performance. Not sure yet what the customer will end up going with exhaust wise from the downpipes back or if they will on this car.



We're sure once more of these are out there more comparisons will come. Plenty of JB dynos out there given its been for quite a while now.

Flash tunes as well as 'front end' flashes and backend piggybacks work well. Devil's in the details and its the overall setup that makes the most consistent power without knock that wins races at the end of the day.



Thanks Cary appreciate it. We're doing quite a bit of testing with E85 and blends right now. Fuel scalar wise, we simply started with the Stage 2 93 OTS map we demonstrated here, rescaled for about E40-E50 and got back to work. We're thinking possibly 24-26psi for an OTS with no changes to ignition timing but we'll see if the turbos really do anything worthwhile pushing given they're becoming pretty hot hairdryers at that point. The stock air to water intercooler on the S55 is absolutely phenomenal, leaps and bounds better than any air to air N54 aftermarket upgrade we've ever gotten a chance to tune.

Car gets squirmy in 4th. 3rd is traction light on 295s on this 6MT car, really really fun to drive with instant torque/throttle response
Very impressive guys..... I am liking the more i see. So on the subject of charge air coolers are you hinting that the stock is efficient enough that one does not have to spend thousands of dollars on these custom ending top mount coolers to gain lower IAT's. I am always seeing comments of heat soaking heat soaking...... in the opinion of the masters at what IAT temp is it technically seat soaking to the point of deteriorating performance.....
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      06-24-2017, 12:30 AM   #93
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Quote:
Originally Posted by proTUNING Freaks View Post
Hey guys, we got a chance to hit the dyno Saturday and finalized the OTS Stage 2 93 octane tune. The car is the same 6MT M4 we ran here on the OTS Stage 1 map.

Of note is conditions were warmer on Saturday than they were when Stage 1 was dynoed but unfortunately we haven't yet found a way to travel back in time but give us "2 weeks" and we might have a time machine ready to go

Here is a link to the Stage 1 93 octane dyno and details on the car:

http://f80.bimmerpost.com/forums/sho....php?t=1297004

We added decat downpipes and retuned. Only mods on the car are K&N dropin panel filters and decat downpipes. It picked up some really nice gains.

Here are 3 back to back runs on Stage 2 as well. Note that top end on the first of the three was lower and then it picked up due to adaptation after that which was great as car gets heat soaked when runs are done back to back which didn't seem to affect it much. Last run made the most power.

These are in smoothing set to 5.



Here's an overlay against the previous Stage 1 93 octane map including the original stock baseline. We set this to smoothing 0 to match what we posted before:



Downpipes on their own without any retuning added about 15-20whp without any retuning. We have probably about 1-1.5psi here over the previous Stage 1 and managed to add about a degree of timing or so without significant timing pull. Power picked up throughout the RPM range except at the very top 7k+rpm most likely due to efficiency of the turbo. Overall response of the car is also slightly improved due to freer flowing downpipes but even with our Stage 1 the S55 had virtually no lag.

Not shabby at all for ~22-22.5psi at the pre-throttle TMAP sensor, 93 pump gas (98 RON). 500whp/550-560wtq in a RWD car on street tires and just downpipes make this a a truly great all around no headaches performer.

Note that our dyno is not the most optimistic number producing of Dynojets out there given the lower baseline but that's dynos for ya and you can take that into account.

Another point worth mentioning is that this is just a representation of what we felt was a nice way to make for an OTS map but with bootmod3 and custom tuning possibilities are virtually endless. These maps can also be used in a stacked fashion with a JB4 if that's your cup of tea and find the JB4 features handy over what bootmod3 already provides such as PI fuel control, various external failsafes, boost target/map switching etc.

S55 OTS Stage 1 and Stage 2 pump gas maps are now officially available through bootmod3.

Question remains, what will the car pick up with an intake and a full exhaust? Any guesses?

Cheers everyone. Let us know if any questions at all.


I've been looking at a lot of dyno graphs recently and thought of a really cool feature you all should implement into the bootmod3. For different maps and power curves include the optimal shift points in the heads up display for each gear and map that you are in. No matter what map or gear you are in you will know the perfect rpm to shift at to get max acceleration. Just a little thought, not sure how possible it would be, but it damn sure would make your tune a whole lot cooler.
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      06-24-2017, 11:26 AM   #94
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BUMP, lol. Wondering if you guys ever did the e blend dyno testing? Also curious if mid pipes would make a power difference with the ZCP exhaust.
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