C300 Dyno Testing
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C300 Dyno Testing
Hey guys,
Was finally able to track down a local RWD C300 for a little dyno testing. Tests were done on CA grade 91 octane fuel using Stage1 (TMAP & RPM only, did not connect brown patch for timing advance), and map 1.
First we did several runs unmodified and were surprised at the results. It did an impressive 211whp when intake temps were around 90 degrees. But that quickly dropped to 179whp when intake temps got in to the 140s. A much larger swing than I expected. It appears the factory mapped ignition advance to retard heavily as inlet temperatures go up.
The tuning took only a minute or so to install. This is truly a quick install & remove type product. With inlet temps around 90 degrees it did 222whp on map 1, and with inlet temps around 140 degrees 196whp. So gains of around 10whp cold and 20whp warm. Torque gains were similar to power gains.
Overall very pleased with the results. It's a good thing we were monitoring intake temperatures, ignition advance, and boost, otherwise the results would have been quite confusing if we compared a cold OEM run to a warm tuned one, etc.
Hopefully next go around we can do some map 2 E85 runs with the brown timing advance patch installed!
Was finally able to track down a local RWD C300 for a little dyno testing. Tests were done on CA grade 91 octane fuel using Stage1 (TMAP & RPM only, did not connect brown patch for timing advance), and map 1.
First we did several runs unmodified and were surprised at the results. It did an impressive 211whp when intake temps were around 90 degrees. But that quickly dropped to 179whp when intake temps got in to the 140s. A much larger swing than I expected. It appears the factory mapped ignition advance to retard heavily as inlet temperatures go up.
The tuning took only a minute or so to install. This is truly a quick install & remove type product. With inlet temps around 90 degrees it did 222whp on map 1, and with inlet temps around 140 degrees 196whp. So gains of around 10whp cold and 20whp warm. Torque gains were similar to power gains.
Overall very pleased with the results. It's a good thing we were monitoring intake temperatures, ignition advance, and boost, otherwise the results would have been quite confusing if we compared a cold OEM run to a warm tuned one, etc.
Hopefully next go around we can do some map 2 E85 runs with the brown timing advance patch installed!
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From: Khalifonia.
4 wheeled car.
This is as basic and as effortless as a tune goes on the 300. The gains aren't massive, but there's there. Considering the cost/install time/results, it's a no brainer! I highly recommend it! I wish I had access to E85 to run more power, but if my butt dyno and the actual dyno are any indicator, it's a very good tune!
Thanks Terry!
Thanks Terry!
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From: Southern Cali (Ontario)
thank you Terry!
how much more boost are you running over stock?
typically MB increases 1 or 2 lbs over stock and make you pay for performance pack.
Check out the C63 base vs C63 S.. the difference in boost is not that much.
E85 is the key.. Propel Fuels pump locater is my favorite iPhone app now for those of us in So Cal.
Been running E85 for close to 5 months.. Zero problems on both of my boosted Benz. 4 gallons each fill up.
how much more boost are you running over stock?
typically MB increases 1 or 2 lbs over stock and make you pay for performance pack.
Check out the C63 base vs C63 S.. the difference in boost is not that much.
E85 is the key.. Propel Fuels pump locater is my favorite iPhone app now for those of us in So Cal.
Been running E85 for close to 5 months.. Zero problems on both of my boosted Benz. 4 gallons each fill up.
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S205
Why would you chose not to show the Torque band from 1.250 to 2200 RPM? I think this is particularly relevant, since it shows a great deal about everyday driveabillity.
Also it could seem as if the original measurement line, in some cases have been cut short, right before the point, where it would appear to cross and stay above the modified line?
For someone not understanding how to read charts like these, it might be hard to grasp. But low end torque is what counts for everyday comfort.
Not showing powerband figures from 1.200 rpm to 2.200 rpm, particuarly since mercedes has made a huge effort to ensure max torque figures starts very low, and well below 2.200 PRM, - could potentially hide valuable information for comparison purposes.
Also it could seem as if the original measurement line, in some cases have been cut short, right before the point, where it would appear to cross and stay above the modified line?
For someone not understanding how to read charts like these, it might be hard to grasp. But low end torque is what counts for everyday comfort.
Not showing powerband figures from 1.200 rpm to 2.200 rpm, particuarly since mercedes has made a huge effort to ensure max torque figures starts very low, and well below 2.200 PRM, - could potentially hide valuable information for comparison purposes.
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From: Mass
2026 GLE 53 Coupe
Too bad we've yet to see a C300 AWD dyno chart yet.
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Around 2000rpm is typically where dynojet runs are started as was the case with these runs. Below that RPM there isn't enough load to get the turbo to spool on a dyno. You may be able to get down to 1500 on a full load dyno but IMHO to measure accurately at such a low RPM you'd probably require the engine to be removed and placed on an engine dyno.
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2016 Mercedes C300W4
Do you have any tunes available for 93 octane that bump the timing up a tad? Looks like 17whp and 21wtq gains with just the base tune on 91 octane, that's pretty solid for a simple tune! That would definitely be noticeable.
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To take it up a notch you'd want to get the C300 brown patch installed. I've got some updated photos and am about to add that to the install guide. But it's such a PITA to reach I imagine only the most hard core will want to attempt it.
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From: Madison, Alabama
2015 C300 RWD AMG SPORT ~ Iridium Silver
BMS FOR SURE
Ok - I currently own (for sale) 2007 335i 6MT -- but never sought after any performance gains. Although I have a Burger oil catch can coupled with a RB PCV . I was happy with the smooth performance of the N54 engine and afraid that the BMS Coding would bring the car down a slippery maintenance failure path.
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So now, I have chosen MB over BMW (difficult decision). I really want to change the characteristics of the M274 engine / tranny. The 8sp in the BMW is awesome while the MB 7G+ simply wants to shift for fuel economy (so it appears).
I am hoping that Terry@BMS (Guru to the Guru's) can render a coding product that doesn't simply increase performance - but alter the characteristics of the driving experience toward a Sports Sedan rather than the cruiser status that my C300 AMG RWD currently possesses.
So - guess what I am saying -- we need a tranny flash as much or more than a engine boost --- both would be great. I will be purchasing a BMS Harness as soon as Beta is complete (because this car really needs it & I am confident that the M274 can handle a tune & the additional heat via the A/W I/C + the better valve oil control that my N54 never had. You see - in my BMW (without a tune) I have had to build a set-up to clean the intake valves 2X over her 120k life due to poor engine design (poor oil control) and I am hoping that the M274 design can handle a light tune without any long term effects.
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SO - GO TERRY@BMS ---
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Too bad the N54 JB4 really wakes up the 335 and is very smooth with the latest ISO firmware.
On the C300 Stage1 it's a much simpler product but expect it to be as smooth and refined as stock only more powerful when you press the gas pedal further. As far as making it smoother than stock. That isn't in the cards at least for the Stage1.
If you're not looking for more power and torque then the tuning probably won't be for you.
On the C300 Stage1 it's a much simpler product but expect it to be as smooth and refined as stock only more powerful when you press the gas pedal further. As far as making it smoother than stock. That isn't in the cards at least for the Stage1.
If you're not looking for more power and torque then the tuning probably won't be for you.
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From: yeg
gallardo, c300, rover supercharged, cayenne S
Too bad the N54 JB4 really wakes up the 335 and is very smooth with the latest ISO firmware.
On the C300 Stage1 it's a much simpler product but expect it to be as smooth and refined as stock only more powerful when you press the gas pedal further. As far as making it smoother than stock. That isn't in the cards at least for the Stage1. If you're not looking for more power and torque then the tuning probably won't be for you.
On the C300 Stage1 it's a much simpler product but expect it to be as smooth and refined as stock only more powerful when you press the gas pedal further. As far as making it smoother than stock. That isn't in the cards at least for the Stage1.
If you're not looking for more power and torque then the tuning probably won't be for you.This is reffering to the c300 stage 1 BMS tune, correct? Can you give an estimate on the 0-60 after the tune? And does having 4matic effect the dyno results?
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From: North San Diego, CA
2015 C300
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From: Manchester, UK
BMW e89 Z4 sDrive 35i & MB S205 C200 AMG Premium Plus
This is interesting. My M274 is the c200 type and limited to 184bhp (flywheel) so I'm quite interested in what can be achieved with remaps on these as I should be able to get to C300 territory without too much difficulty (one would expect, unless there are some very specific hardware upgrades to the C300 that I don't know about rather than just the ECU). The stock C200 certainly could do with a bit more top end oomph. Fine at low speeds but on the highway it feels like I'm pushing an elephant in front of the car.
