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Really? Variations of 28 hp between runs? Sounds like either a f'ed up dyno or f'ed up car. Even heat soak in a hood down and no fan run scenario shouldn't produced results that vary that much on any car.
Youve obviously never seen a c43 on a dyno. The ecu has some weird adjustments that will significantly increase power the more you beat on it. That’s why if you ever track this car your best time will come near the end of the night after you run it 30 times back to back.
These dyno’s are pretty much worthless. Anyone that’s dyno’d a C43 can tell you that over 5 runs, you will get variations like this on the SAME setup. It’s very easy to pick the worst and best dyno of the day on the same setup and see variations like this, so with an intake this is -not- a sign of performance gains.
Generally with intakes the restriction grows as air demand grows so you should see higher gains at higher RPM than lower RPM. A "midrange" gain points more to more of a red herring like run variance or tuning changes.
Looking at this design we can see why it's not producing the gains it should and likely is going to result in hotter temps than our intake. But we'll wait for them to release it before we bother with the details. No point in hitting a moving target.
2017 AMG C43, AWE Touring, BMC Air Filters- 2015 BMW X3 3.5i (JB1 Equipped)
Originally Posted by threefirs
Youve obviously never seen a c43 on a dyno. The ecu has some weird adjustments that will significantly increase power the more you beat on it. That’s why if you ever track this car your best time will come near the end of the night after you run it 30 times back to back.
I concur with this statement, from my experience the car seems to get faster the more you thrash on it. Definitely more power after you floor the 11th time after 5 -10 times through the gears. Seems strange but it is very true.
Those dyno variations are not uncommon in my experience, I had a car log 5 dyno runs in a 1 hour session and on the best run the torque rose 23lb ft over next highest run. This type of thing does happen blame it on the
ECU I guess.
Youve obviously never seen a c43 on a dyno. The ecu has some weird adjustments that will significantly increase power the more you beat on it. That’s why if you ever track this car your best time will come near the end of the night after you run it 30 times back to back.
That is a true statement. I was basing my experiences off of the other cars I have seen on different dynos. C43 may be a peculiar animal.
Generally with intakes the restriction grows as air demand grows so you should see higher gains at higher RPM than lower RPM. A "midrange" gain points more to more of a red herring like run variance or tuning changes.
Looking at this design we can see why it's not producing the gains it should and likely is going to result in hotter temps than our intake. But we'll wait for them to release it before we bother with the details. No point in hitting a moving target.
I am confused by this statement. Their system appears to have a powdercoating to halp with temperatures and is directly connected to the intake ducts out front. Your system, as it stands, is an open element. Can you provide your dyno runs?
Also.. for both systems (BMS and MST)...Can the results be replicated? I have seen a total of one dyno run for one system and zero for another. It seems that there is a lot of interest in the community, but a lot of scepticism that is justified by the lack of real data.
Generally with intakes the restriction grows as air demand grows so you should see higher gains at higher RPM than lower RPM. A "midrange" gain points more to more of a red herring like run variance or tuning changes.
Looking at this design we can see why it's not producing the gains it should and likely is going to result in hotter temps than our intake. But we'll wait for them to release it before we bother with the details. No point in hitting a moving target.
Get out of here, you posting in a competitors thread is just sleazy.
Your intake might have higher peak numbers but will surely get heat soaked from the engine bay easier and faster.
I am confused by this statement. Their system appears to have a powdercoating to halp with temperatures and is directly connected to the intake ducts out front. Your system, as it stands, is an open element. Can you provide your dyno runs?
Also.. for both systems (BMS and MST)...Can the results be replicated? I have seen a total of one dyno run for one system and zero for another. It seems that there is a lot of interest in the community, but a lot of scepticism that is justified by the lack of real data.
Yes, I'm working with Weistec and will be going on their AWD Dynojet soon. The rain here is not cooperating as their dyno needs to be run outside.
Originally Posted by alexasa
Get out of here, you posting in a competitors thread is just sleazy.
Your intake might have higher peak numbers but will surely get heat soaked from the engine bay easier and faster.
As I said a few posts up, I don't think I said anything wrong. This thread was made by a forum member, not a paid vendor like us...
"Looks pretty good except now you have a hot aluminum case surrounding the filter
There is a reason why most companies use rotomold, or lexan when using these types of enclosed intakes...
So it wont store the engine heat, that's like an oven for your filter lol."
Yes, I'm working with Weistec and will be going on their AWD Dynojet soon. The rain here is not cooperating as their dyno needs to be run outside.
As I said a few posts up, I don't think I said anything wrong. This thread was made by a forum member, not a paid vendor like us...
"Looks pretty good except now you have a hot aluminum case surrounding the filter
There is a reason why most companies use rotomold, or lexan when using these types of enclosed intakes...
So it wont store the engine heat, that's like an oven for your filter lol."
Evidence, contextual at that too, please. You have done nothing to prove the open air design for the consumer.
Yes, I'm working with Weistec and will be going on their AWD Dynojet soon. The rain here is not cooperating as their dyno needs to be run outside.
As I said a few posts up, I don't think I said anything wrong. This thread was made by a forum member, not a paid vendor like us...
"Looks pretty good except now you have a hot aluminum case surrounding the filter
There is a reason why most companies use rotomold, or lexan when using these types of enclosed intakes...
So it wont store the engine heat, that's like an oven for your filter lol."
Are you all going to be refining your design to include said rotomold or lexan?
No, not needed. We're not using an enclosed type of intake design...
Are you guys revising your design? You have had many complaints that you should probably fix before trashing this MST thread.
Either way, I plan on purchasing one design for the summer and want to see data that backs the performance and reliability claims rather than hearing put-downs.
This item can be pre-order now, we provide 10% discount on pre-order, this discount won't be available till the end of March. You could place the order by the Link. https://www.mst-performance.com/products/mb-4301
Are you guys revising your design? You have had many complaints that you should probably fix before trashing this MST thread.
Either way, I plan on purchasing one design for the summer and want to see data that backs the performance and reliability claims rather than hearing put-downs.
Show us why BMS is better!
Thrashing and put downs? Speaking facts about thermodynamics and heat containment I'm not sure where I said anything wrong. I even said the intake looked good.
Approx 9min mark he mentioned the box staying cold while the engine compartment is hot. Of course his box is in front unlike ours. But still interesting...
I just would like to see some reviews and dyno results for both setups. Maybe, as they come on to market, folks will post some results and we can get some side by side comparison,
So all you guys that pre-ordered should be getting your kit soon. Since I am only an hour drive away from MST, I got mine installed today!
The kit is so clean and well made, it looks straight from the factory!
Quick review. Didn't see much change in IAT.. I'm thinking probably because the stock IAT sensor is at the TB after the intercooler. So, the IAT reading is basically the efficiency of the intercooler.
However, saw nice gains in boost pressure. Previous log with the stock airbox (with K&N inserts) saw huge boost decrease after hitting max boost 22psi. With MST, boost holds much better after hitting max 22psi.
The stock airbox log is done months ago @ 20C ambient temp. 1st to 5th gear WOT pull.
The MST log was from today @ 32C ambient temp. 2nd to 5th gear WOT pull.
If your not familiar with the JB4 log, the blue line is the turbo boost in psi.
As for sound, I really can't hear anything becuase I have a full catless exhaust system with weistec BOV. Both are just obnoxiously loud. LOL.
Car is stage 2 ECU tuned on 93oct gas.
Only regret is that I wasn't able to Dragy before and after. Got the call at mid night that the kit is available. Went to MST for install the next day.
So all you guys that pre-ordered should be getting your kit soon. Since I am only an hour drive away from MST, I got mine installed today!
The kit is so clean and well made, it looks straight from the factory!
Quick review. Didn't see much change in IAT.. I'm thinking probably because the stock IAT sensor is at the TB after the intercooler. So, the IAT reading is basically the efficiency of the intercooler.
However, saw nice gains in boost pressure. Previous log with the stock airbox (with K&N inserts) saw huge boost decrease after hitting max boost 22psi. With MST, boost holds much better after hitting max 22psi.
The stock airbox log is done months ago @ 20C ambient temp. 1st to 5th gear WOT pull.
The MST log was from today @ 32C ambient temp. 2nd to 5th gear WOT pull.
If your not familiar with the JB4 log, the blue line is the turbo boost in psi.
As for sound, I really can't hear anything becuase I have a full catless exhaust system with weistec BOV. Both are just obnoxiously loud. LOL.
Car is stage 2 ECU tuned on 93oct gas.
Only regret is that I wasn't able to Dragy before and after. Got the call at mid night that the kit is available. Went to MST for install the next day.
02-28-2019, 02:57 PM
