10-25-2014, 01:25 PM | #1 |
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Dinan Stage 1 vs BMS Vbox comparison 1/4 mile /60-130
I had the chance to test the Dinan stage 1 on my 2014 M6 CP with SS DP's and Gruppe M intake, in 60-130, 1/4 and 1/2 mile runs. I used the exact same 0 slope testing road as my BMS +3.5 tests. The DA was 580 for the Dinan test and 100 for the BMS runs , so the BMS got slightly better air, both cars had a full tank of 93 octane . I think the acceleration graphs clearly shows the difference between a proper tune and not , especially on the shifts. Traction was more of an issue with the Dinan stage 1 due to it making more power on the top of 1st gear and 2nd gear as well as an instant 1/2 shift, you can see on my 1/4 run were i had to lift at the 1/2 with the Dinan for a moment. It def has more in it, on the 60-130 as well.The first 3 are the Dinan runs.
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10-25-2014, 08:36 PM | #2 |
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10-25-2014, 09:12 PM | #3 | |
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10-26-2014, 11:36 AM | #4 |
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So which one was faster? BMS right?
and I believe the stage 2 is just intake and exhaust. How you figure car is knocking you have any data logs with timing, ect? Just wondering would love to see it. Thanks man! |
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10-26-2014, 11:47 AM | #5 |
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Can you confirm which graph is what, the later graphs show a faster car, which I assume are BMS given you said Dinan graphs were first..
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10-26-2014, 11:48 AM | #6 | |
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10-26-2014, 12:05 PM | #7 | |
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10-26-2014, 12:32 PM | #8 |
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I'd like to see a log with BMS new firmware that makes a smoother torque curve to compare. So at the end of the day they are the same with while you spen less on BMS is what I'm getting out of this.
Also you have options with BMS depending on fuel and boost . You'll have those who will be more conservative and those like me that like as much as they can get out of their cars. Great post man thanks for doing these Vbox runs. Maybe you can do some Dyno numbers to compare the two, that would be great. Thanks G G |
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10-26-2014, 12:50 PM | #9 | |
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Performance out of the TU on pump gas without meth or race gas then Dinan is the best option , with the added benefit of stock driveabilty and DCT function . If your looking for max numbers like you then the BMS with meth is the way to go . |
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10-26-2014, 01:36 PM | #10 | ||
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The M5 just seems to be a bit off the radar for BMS right now? Correct me if I am wrong? I really want a good tune, but the Dinan cost is a bit of an irritation, compared to BMS... |
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10-26-2014, 01:53 PM | #11 |
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So far I have had seven runs vs BMS (3.0) on two cars. All seven times the Dinan Stage 2 won. One of the cars was stock w/ BMS and the other had catless DP's.
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10-26-2014, 01:55 PM | #12 | |
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I'm going to Dyno with both options on the BMS because you can turn it off and on with the new firmware. I like more torque down low then the smoother torque. But that's me. I plan next week to Dyno and see what the graph looks like and how power is effected by adjusting torque delivery. Will keep you in the loop. |
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10-26-2014, 03:42 PM | #13 | ||
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10-26-2014, 03:53 PM | #14 | |||
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10-26-2014, 03:57 PM | #15 |
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When you went yo the track and raised boost how long before you raising boost and runing the car. I can say raising boost even with higher octane it needs a couple days of adaptation.
What you say may be true for you but for me running two cars with different setups I don't get the feeling you're talking about or any limp modes. I know some guys tried raising their boost during a race and got missfire codes. I told them the car has to adapt to the extra air. It's not a tune you load up and you're ready to go. I log air fuels ect and see how the car responds to every mod and can tell you from experience you can't just up the boost more than 3.5 and think everything is gonna happen from a turn of the ignition. Maybe when you get your stage 2 we can get up at the track for some comparison runs and see how we do. Just a thought Last edited by m6beast; 10-26-2014 at 04:04 PM.. |
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10-26-2014, 05:36 PM | #16 | |
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Looking at this data set the BMS Stage1 was quicker than the Dinan Stage1 to the tune of 7.3s 60-130 for BMS to 7.5s 60-130mph for Dinan. If I've read your previous results properly in the 1/4 mile you went from 129mph stock, to 131mph with the BMS tune, to 130mph with the Dinan tune? On the BMS end the 3.5psi is a bit too aggressive for the CP cars on 93 octane in my opinion. I think 2.0psi would be more appropriate and that may slow you down to the Dinan times which I'm sure are running less boost. The latest Stage1 firmware would also smooth out boost in 1st and 2nd making launching a bit easier. Alternatively adding in race gas or octane booster would allow you really use that 3.5psi setting with additional power. I do have to say I'm a bit baffled by your analysis especially with engine knock. There isn't going to be any engine knock in 1st or 2nd gear under low load conditions struggling for traction and momentum. That is something you'll experience towards the end of long half mile pulls where load is high and everything is hot. In a previous performance post you mentioned the BMS Stage1 was giving traction issues in 1st and 2nd which perfectly reflects what your acceleration logs here are showing. I think you should be careful when making claims like the Stage1 is knocking and your Dinan is not without actually logging the runs for each tune and looking at the knock data. That would be some great data to see. Mike |
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10-26-2014, 05:52 PM | #17 | |
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10-26-2014, 06:08 PM | #18 | |
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Your'e right I can't be sure what is causing the long shifts and power delay on the runs since i wasn't logging data this time ,but obviously the car wasn't liking something with every shift at +3.5. Also at the drag strip it kept having a weird hesitation in 1st when i attempted to modulate the throttle then a huge delay on the 1-2 shift. I'm sure the new firmware with the slower tq ramp up will help alleviate this some . G |
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10-26-2014, 07:29 PM | #19 | |
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I'm not sure why BMS has decided not to make a JB4 for the s63tu platform but if that ever changes I'll be sure to let everyone know. In terms of Dinan it's not clear to me whether it's a full tune or just a intercepting a few analog signals via the ECU connection rather than the sensors directly. A full tune piggyback would be able to spit out complex logs like this for analysis. This log specific log was from a JB4 tuned F80 M3 running at Shift Sector this weekend. Mike |
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10-27-2014, 07:04 AM | #20 | |
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I was going back through my pre-tune data from early in the summer. My best ET and trap on the stock M5 was 12.05 with a trap of 120.3. With the update I had an ET of 12.05 due to poor 60ft times with a trap of 124.3. I have not gotten the shifting down yet with the Stage 2 update and so I lose traction in the 1-2 shift which I am letting the car do. I haven't done any runs with DSC off and shifting myself but I think I will go out and try that this week. I am getting ready to tune the Porsche and looking at the FVD piggyback as my choice instead of the GIAC flash. I still can't get over how much faster the M6 is than the 5. Last edited by wrsbmw; 10-27-2014 at 07:18 AM.. |
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