[JakeW1990]

I had the Dinan 93 tune and was not happy with the results as people with a completely stock car 60-130'd faster than me. So last week I went on a 4 hour road trip for a second vendor that offered even more power through their flash and I just did a test……. Literally the same exact time… 11.04 1/4 mile. Same exact location and similar conditions.

Has anyone experienced anything like this? The advertised powers are night and day, both are full ECU/TCU tunes, 0-60's were almost identical (I had 3/4 tank of fuel this time and slightly less than 1/4 with the Dinan test). The current flash feels faster but almost a second off expectations.

W. T. F. . It's like the ECU is limiting both flashes.

[pbonsalb]

I assume you allowed time for adaptation or reset adaptations. Did you test your car stock or are you comparing other people’s stock times to your tuned times? Are you the person who is starting your 60-130 from a 57mph cruise?

[JakeW1990]

Originally Posted by pbonsalb

I assume you allowed time for adaptation or reset adaptations. Did you test your car stock or are you comparing other people's stock times to your tuned times? Are you the person who is starting your 60-130 from a 57mph cruise?

Lol. No. That is not me but is funny. My times are from 0-130 using LC. My times are slower than stock. That's bad…especially when making over 280hp and 200ft lbs of torque more than stock.

I dug through forums and compared my tuned times versus people's stock times. I'm up to around .7 slower than some. That's a big difference, calculating my power increase and variances between DA. Also a general search for the stock F90 quarter mile time shows that I'm behind the curve, significantly.

I had to drive over 4 hours back from the destination. That, and I drove for another 3 days before giving it the beans. The thing is that the times are identical in the 1/4 with slight variations up to finish.

Dinan 93 is the first image and the new flash is the second. It's like power is being limited, etc. I drove the Dinan for an extended period of time, over a month with no change. Put 250 miles after the new flash.

[onfireX5]

You need to log the obd2 when making a pass. Just guessing what is happening otherwise. Could be a bunch of things. Timing pull, etc.

[AHall]

An additional 200 ft-lbs torque
Using Launch Control

[Antec800]

That’s actually quite weird what company is this what did they use dme,bm3,mhd? they may have just taken your money and not actually tuned anything

[Luminous]

So many factors here. What's your DA? Your 60ft is horrible. What tires? Are you spinning?

Dinan tunes are garbage, if you're going to do a flash stick with the reputable companies. BM3 is very popular.

[JakeW1990]

Originally Posted by onfireX5

You need to log the obd2 when making a pass. Just guessing what is happening otherwise. Could be a bunch of things. Timing pull, etc.

What do you use- JBx or bootmod device?

[JakeW1990]

Originally Posted by Antec800

That’s actually quite weird what company is this what did they use dme,bm3,mhd? they may have just taken your money and not actually tuned anything

This has been 2 different vendors now, completely different power advertisements, same exact times. I don't know what they used, but it was just a flash.

[JakeW1990]

Originally Posted by Luminous

So many factors here. What's your DA? Your 60ft is horrible. What tires? Are you spinning?

Dinan tunes are garbage, if you're going to do a flash stick with the reputable companies. BM3 is very popular.

I was looking at JB4 and BM3 last night cause it seems I'm 0/2 with flashes and tons of people with the times I'm looking for are using those.

DA's are listed on both of the Dragy snapshots. Test was done in the same location in very similar conditions. Very little wheel spin on 4s's. You can tell by the Gforce the car is pulling off launch- almost 1.5G's.

[pbonsalb]

It would be worth logging if your tune offers that or maybe even buying a JB4 to use for logging. I ran a JB4 and now a tune (with the JB4 running meth and adding boost on top of the tune), and have sent JB4 logs to Terry at Burger for review since I am not really an expert at studying them for issues and he has seen thousands.

[onfireX5]

Originally Posted by JakeW1990

What do you use- JBx or bootmod device?

Both log or you could buy a cheap obd2 plug in and use DashCommand App plus BT1 plug in Just plug the end into the obd2 and the App on your phone will log it.

Not as good as JB4 due to less data points, but it will capture data. Jb4 would be ideal but costs more.

[Luminous]

I would not trust a JB4 on my M5. Messed around a lot with them on my N55, the build quality is too poor, not worth the risk. Stick with trusted flash tunes. If you want to do piggyback, I like the racechip gts.

[pbonsalb]

I have had no problem with the JB4 on my M5. Also had one on my E61 535xi with N54 and no issues.

[JakeW1990]

All things aside, has anyone actually experienced the same thing I have? 2 different tunes, varying greatly in HP and similar TQ. I mean, I ran identical times, to the hundredth, and both are slower than a stock M5- even when converting DA at sea level. I feel like only the secondary effects of the tunes are in place (sport gauges for example).

My gauges peg 880/720 now so the assumption is around 900hp at the crank and probably around 750ft lbs- likely more from what I've seen. The numbers just don't add up. Taking traction issues out of the equation, 60-130 is still around 8.3 seconds which is still slower than stock numbers.

Anyone else experience this or did they actually see improvement with their flashes?

[Antec800]

I wouldn’t say your numbers are slower then a stock comp, stock comps running high 7/low 8 60-130 are in optimal conditions with very low da, but tuned m5s are high 6 so it definitely doesn’t add up either way

[Bure@]

Here are my best times with stage 1 flash from bootmod3. So far I am happy with results

[JakeW1990]

Originally Posted by Bure@

Here are my best times with stage 1 flash from bootmod3. So far I am happy with results

That's about 1.3 seconds faster than mine 60-130. Lol. There's definitely something causing problems for me.

[JakeW1990]

Originally Posted by JakeW1990

That's about 1.3 seconds faster than mine 60-130. Lol. There's definitely something causing problems for me.

Decided to do another pull after replacing the rear tires today. Fastest 0-60 time I've had (swapped drive mode from 4WD sport to 4WD) but slowest 60-130. 8.62… here is a random video of a stock F90 for comparison to my +280hp and +200ftlbs flash.

This all but confirms that whatever is going on, the car isn't accepting the flash and is stock equivalent.

[pbonsalb]

How do you know your ECU “has not accepted the flash tune” versus your engine requiring some maintenance? I think you need logs to troubleshoot since you have presumably ruled out an active or stored or pending CEL and have checked obvious things like spark plug condition and whether the coolant tank is leaking. There has to be an explanation.

[JakeW1990]

Originally Posted by pbonsalb

How do you know your ECU “has not accepted the flash tune” versus your engine requiring some maintenance? I think you need logs to troubleshoot since you have presumably ruled out an active or stored or pending CEL and have checked obvious things like spark plug condition and whether the coolant tank is leaking. probably don’t know how the engine is running. There has to be an explanation.

I don't, unfortunately. Car runs smooth, no misfire, etc. Fuel economy is amazing. Usually 28+ mpg while cruising. Averaged 29mpg across 360 miles last week. That's not indicative of fouled plugs. I do plan on getting the service data just to make sure though. Temperatures are perfect and my garage is bone dry. Engine bay is clean so no indications of any leaks or capacity issues whatsoever. Outside of trying to find a device to data log with, that's the only thing I can think of.

[pbonsalb]

Your last tune was professionally installed so I assume the tuner verified it loaded. I don’t think there is much you can do without a dyno or logs. I’d prefer logs to a dyno since a dyno might not help you pinpoint a problem but a log can provide 10 points of data or more.

Maybe buy a used jb4 with Bluetooth phone app and do some logs. Once sorted out, resell the jb4 and you should not lose much money.

Or pay a tuner to actually dyno tune the car rather than just flash it for you. The tuner will then be troubleshooting your car for you but he has expertise with tuning issues and will have the ability to log to pinpoint issues.