[Rock Sweden]

I’m starting down the path of modding my M2. To quantify the results of the mods I got a dragy. I don’t live in an area with many dynos and it seems that there are lots of variables that can affect dyno numbers. While whp numbers are nice to know I’m more interested in what it adds up to out on the road.
My plan is to test each mod by timing the 60-120mph times with a dragy and be as scientific as possible. Every time I test the car I take a screenshot of the weather for comparison sake. Runs are on the same flat road in the same direction with back-to-back pulls seperated by a .5- .75 mile slow down. No rhyme or reason for this format it just happens that the road requires it.

The first test was stock vs Dinan sport tuner in race mode. The 60-120mph results were:
Stock- 12.47 seconds
Dinan Sport tuner Race setting-11.25 seconds.
Race setting is 1.22 sec faster
Weather 70f, humidity 38% wind NNW 2mph resulting in a slight tail cross wind.

What do ya’ll think? Suggestions & advice welcome.

[SeanWRT]

60-120mph is 96-193kph. Your number of 12+s with stock car is way off. Stock car does 100-200kph in 10.5-10.8s.

Also, with M2 it would be even difficult for FBO and a quality flash to gain a full sec in 100-200.

A TMAP based piggyback alone is not going to do 1.2s.

[Rock Sweden]

Originally Posted by SeanWRT

60-120mph is 96-193kph. Your number of 12+s with stock car is way off. Stock car does 100-200kph in 10.5-10.8s.

Also, with M2 it would be even difficult for FBO and a quality flash to gain a full sec in 100-200.

A TMAP based piggyback alone is not going to do 1.2s.

I'm not sure why my numbers are so far off the norm. I start each run in 3rd gear and finish in 5th. Car was serviced in August & hasn't been driven 500 miles since. Currently there are 12,200 miles on it. Here are the runs.

[Rock Sweden]

A wagner catted DP has been added since I did this on 11/18. I haven't done any tests with it yet but should do a couple in this week. Been waiting on the weather to be comparable.
I also shot videos of the stock exhaust. I used a DB meter (Decibel X Pro for Iphone) to try to quantify the difference but I think it's going to be inconclusive. The meter doesn't show much if any difference between comfort and traction mode.

BTW The DP threw a code within 15 miles of soft driving.

Next I will tune with BM3 OTS stage 1 followed by a CSF intercooler and ER charge Pipes and OTS stage 2. The IC & CP S2 will be after new years.

[bentom2]

Originally Posted by Rock Sweden

I'm not sure why my numbers are so far off the norm. I start each run in 3rd gear and finish in 5th. Car was serviced in August & hasn't been driven 500 miles since. Currently there are 12,200 miles on it. Here are the runs.

Manual or DCT? If manual, 4th gear is good for over 120+mph/200kph at around 6,500rpm. Staying in 4th should both help your times and make them more consistent by eliminating that 4-5 shift.

DCT, with it’s extra gear, probably has different shift points and tighter ratios, but not sure what you’re driving.

Anyway, that’s probably obvious, but just a thought while I’m still drinking my morning coffee.

[SeanWRT]

Maybe you did 60-130

[Lukeni]

Guestimated loss for a manual is about half a sec, 1 sec if you change gear sloppy? So 11.2 is not that bad

Edit: sorry...11.2 is actualy bad for non-oem

[Rock Sweden]

Originally Posted by SeanWRT

Maybe you did 60-130

no its 120, the extra gear shift may account for some of it.

Originally Posted by bentom2

Manual or DCT? If manual, 4th gear is good for over 120+mph/200kph at around 6,500rpm. Staying in 4th should both help your times and make them more consistent by eliminating that 4-5 shift.

DCT, with it’s extra gear, probably has different shift points and tighter ratios, but not sure what you’re driving.

Anyway, that’s probably obvious, but just a thought while I’m still drinking my morning coffee.

Its a manual. The best time of 11.24 I stayed in 4th to 120. The extra shift cost me .25 of a second.

I'll get some more times soon. weather hasn't been cooperating lately. lots of rain and cooler temps. Thursday high in mid-60's.

I'm a newbie at this stuff so all insight is appreciated.

[Daleb]

Here’s some custom mapped fbo stock turbo 100-200kph times mostly from the U.K.

[dubzz24]

I think if you're doing this for scientific purposes, the most important thing is keeping the conditions relatively consistent and just looking at the speed improvements. There are so many variables so don't bother comparing to other people's times, just compare to your own.

I rarely see people achieve what publications report for performance metrics like 1/4 mile, 0-60 etc. By brother-in-law couldn't beat a 13.9 @ 100mph quarter mile in his bone stock Audi S4 when it was new. Motortrend apparently clocked a 13.0. Same deal with my old e46 M3 back in 2005 - I got a best of 13.7 @ 101mph bone stock (with a 2.0 60') yet the magazines showed 13.0-13.1.

Don't sweat it. Your car is quicker after the mods, that's the important part.

[Rock Sweden]

Originally Posted by dubzz24

I think if you're doing this for scientific purposes, the most important thing is keeping the conditions relatively consistent and just looking at the speed improvements. There are so many variables so don't bother comparing to other people's times, just compare to your own.

I rarely see people achieve what publications report for performance metrics like 1/4 mile, 0-60 etc. By brother-in-law couldn't beat a 13.9 @ 100mph quarter mile in his bone stock Audi S4 when it was new. Motortrend apparently clocked a 13.0. Same deal with my old e46 M3 back in 2005 - I got a best of 13.7 @ 101mph bone stock (with a 2.0 60') yet the magazines showed 13.0-13.1.

Don't sweat it. Your car is quicker after the mods, that's the important part.

Exactly.

[Rock Sweden]

Originally Posted by SeanWRT

60-120mph is 96-193kph. Your number of 12+s with stock car is way off. Stock car does 100-200kph in 10.5-10.8s.

Also, with M2 it would be even difficult for FBO and a quality flash to gain a full sec in 100-200.

A TMAP based piggyback alone is not going to do 1.2s.

Beats me. I respect your knowledge & opinion but it did in fact improve 1.2s from stock to race mode. Pulls were within 5 minutes of each other, same section of road in same direction.

[Blurbo311]

Good info to have around, thanks for posting op.

I kind of wish I would have done something similar before/after I added my sport cat dp.

[Bee Pee]

Originally Posted by SeanWRT

60-120mph is 96-193kph. Your number of 12+s with stock car is way off. Stock car does 100-200kph in 10.5-10.8s.

Also, with M2 it would be even difficult for FBO and a quality flash to gain a full sec in 100-200.

Daleb's post below implies it's very possible to gain 2+s with BO's and a custom flash...

Originally Posted by Daleb

Here’s some custom mapped fbo stock turbo 100-200kph times mostly from the U.K.

[SeanWRT]

Originally Posted by Bee Pee

Daleb's post below implies it's very possible to gain 2+s with BO's and a custom flash...

Could be Daleb's access to high octane that allows for more aggressiveness. I reviewed his earlier logs from OTS maps and knew his times were consistent with what I saw with similar setup in my country. He improved by quite a bit via custom tune to his octane by Halim. Normally it takes E20-30 in my country to dive into high 8s with stock turbo. His octane may be close to that.

OP being a manual explains a lot. My advice for OP is to measure 60~120mph time in just 4th. If 4th isn't really long enough, finish where 4th ends. The single gear pull removes shifting inconsistency by human error. Therefore it works as the real world dyno from which you see accurate improvement. Like said, delta is what matters. Keep in mind in doing that, you'd be seeing bigger improvement than should, because you stay in the middle range longer than should. But anyway, that's mostly the real world case for manual car.

[Daleb]

Originally Posted by SeanWRT

Could be Daleb's access to high octane that allows for more aggressiveness. I reviewed his earlier logs from OTS maps and knew his times were consistent with what I saw with similar setup in my country. He improved by quite a bit via custom tune to his octane by Halim. Normally it takes E20-30 in my country to dive into high 8s with stock turbo. His octane may be close to that.

Hi Sean, I am still running a tweaked OTS map but will look to go custom when spring comes. These are just a few results I have seen, there is also another handful running mid 8s but on other gps platforms like p-gear etc. The trend I am seeing is that these results tend to come from Europe where fuel may be of a higher quality and conditions are more optimal year round. For reference the fuel used on these runs is v-power 99 ron.

I believe the quickest my car has gone on the tweaked ots is 9.3s, so quite a bit off. This was however in greasy/traction limited conditions in mdm mode. I have a new version to try but I don’t expect to reach the levels of performance you get from a custom map with these slightly tweaked OTS’s. Still fun to test and see how the changes affect on road performance.

[Rock Sweden]

Just did a couple of runs on way home. Wasn't able to use same road today.
Weather: 61f, 65% humidity
Wagner Catted DP
Stock 10.51 sec
Race 10.33 sec

I just saw the shifting advice so i didn't try that. Not to mention my baseline is with a 3rd- 4th shift so I'm going to stick with that method. Apples to apples and all.

[SeanWRT]

Originally Posted by Rock Sweden

Just did a couple of runs on way home. Wasn't able to use same road today.
Weather: 61f, 65% humidity
Wagner Catted DP
Stock 10.51 sec
Race 10.33 sec

I just saw the shifting advice so i didn't try that. Not to mention my baseline is with a 3rd- 4th shift so I'm going to stick with that method. Apples to apples and all.

Now we're talking. I did quite a few back to back 100-200kph tests (62-124) with Dinan Elite (stage one, not sport tuner) two years ago.

FMIC+DP+Turbo Inlet+ Dinan= 10~10.2s.

On stock tune (turning off Dinan), I did 10.1-10.3s.

The hardware mods increase the stock tune aggressiveness, which cannibalizes the gains from Dinan Elite software that may have an absolute maximum boost target designed for complete stock hardwares.

Dinan Sport tuner that you're using would be a different story as it adds 4psi of boost in race mode on top of whatever DME targets. As such it sometimes takes more advantage of hardware when ambient condition allows, but at other times it goes over aggressive and DME pulls timing, ending up being slower.

[Rock Sweden]

Originally Posted by SeanWRT

Now we're talking. I did quite a few back to back 100-200kph tests (62-124) with Dinan Elite (stage one, not sport tuner) two years ago.

FMIC+DP+Turbo Inlet+ Dinan= 10~10.2s.

On stock tune (turning off Dinan), I did 10.1-10.3s.

The hardware mods increase the stock tune aggressiveness, which cannibalizes the gains from Dinan Elite software that may have an absolute maximum boost target designed for complete stock hardwares.

Dinan Sport tuner that you're using would be a different story as it adds 4psi of boost in race mode on top of whatever DME targets. As such it sometimes takes more advantage of hardware when ambient condition allows, but at other times it goes over aggressive and DME pulls timing, ending up being slower.

What difference do you think the weather made?
Weather 70f, humidity 38%
Weather today 61% humidity 65%