08-28-2012, 05:00 PM | #23 |
GMW/BMW
2
Rep 23
Posts |
I just wish there was a company that sold tuning software so that people like me could do it on our own.
I'm closely following these kinds of posts with the hopes that a viable solution will be available, but just don't like the idea of piggy-back systems as much as direct ECU manipulation. I have done both and with great success, but with today's technology I prefer to have the vehicles original ECU take care of business. I'd like to see what COBB has to offer with AccessTuner. It's a bit like EFILive that I use on my SKY and hope that the software is as robust as EFILive is. You can have every table known to man exposed in the software, but if you can't interpret what is going on with a known engine model then all of those tables are useless. Load based ECU systems and the use of coefficients over VE tables in the most up to date systems means that if the software isn't up to the task of viewing it, then not many tuners will be able to build safe tunes. I know a good bit about new GM ECU's, but not much yet about the BMW DME. For now..
__________________
-SCSKYSC
2012 BMW 328i Black (wife's car) 2007 Saturn SKY Rotrex Supercharged (mine) |
Appreciate
0
|
08-28-2012, 05:47 PM | #24 |
Second Lieutenant
45
Rep 202
Posts |
If you are seriously interested in ecu tuning for yourself, my E46 M3 ran off a motec m600 or you could use the more common bosch 4.3 control unit found in current grand-am cars. You are looking at about $5,000 for the motec with sensors and none of the features besides basic engine duties will work at all and you will have to beg for a base map that is close to your engine so you can even start it the first time.
Data logging with track time is the only way to produce reliable track tunes and the vendors will have to accept less power than the drag/dyno tuners are getting. |
Appreciate
0
|
08-28-2012, 06:18 PM | #25 | |
Second Lieutenant
45
Rep 202
Posts |
Quote:
http://www.swiss-chiptech.com/chiptuning-box_bmw.html It seems reasonable to look toward countries closer to Germany for tunes to me because this isn't the only country that drives faster than stock cars. Their claim is peak 278hp, 296lb/torque but as always I'd love to see the graphs, egt and a/f if I can BMS, 258hp and 281lb/torque ($375) BMS+ER downpipe, 270hp, 304lb/torque ($850?) Kelleners/Hartge, 294hp, 310lb/torque ($1300) Speed Buster, 290hp, 324lb/torque (about $800) BMS has the best data out that I know of, 281lb vs 296lb/torque is heavy but I already see things in the BMS graph that I personally am not happy with that seem stressful but I am not an engine tuner and only have basic knowledge of what I can see in the data they are allowing people to see. |
|
Appreciate
0
|
08-28-2012, 08:54 PM | #27 |
Second Lieutenant
45
Rep 202
Posts |
JB is BMS from my list above, I'd say for the price it sounds good and they have around 100 installed so feedback must not be extremely negative.
The others are expensive, and do not seem to have the easiest support although Speed Buster claims 324lb/torque which would be quite nice in our cars especially if you could run the downpipe on top of that. |
Appreciate
0
|
08-28-2012, 08:59 PM | #28 | |
Major
208
Rep 1,201
Posts |
Quote:
|
|
Appreciate
0
|
09-07-2012, 09:32 PM | #30 | |
BimmerPost Supporting Vendor
4907
Rep 115,980
Posts |
Quote:
Mike |
|
Appreciate
0
|
11-02-2012, 06:40 AM | #31 |
New Member
2
Rep 8
Posts |
Check this out! http://www.racechip.de/en/chiptuning...328i-180kw.php
Racechip 221 kW / 300hp / 420 Nm |
Appreciate
0
|
11-02-2012, 09:31 AM | #32 | |
Infidel
122
Rep 1,102
Posts |
Quote:
Nice nick btw
__________________
Dec. 2022: Fully loaded Carbon Black G08 iX3 LCI M Sport Pro
Former: Glacier Ag. F31 328iA RWD M Sport oct. 2012, sold July 2022 | Sport Automatic | Adap. M Susp. | Pano. Moonroof | 20" ATS Racelight Grey w. Michelin PSS| M Sport brakes | Harman Kardon | Elec. Seats | PDC F&R | ACC Stop&Go | 335i MPE | Perf. Parts | |
|
Appreciate
0
|
11-02-2012, 09:56 AM | #33 |
New Member
2
Rep 8
Posts |
Could be, however two of my friends are very pleased with their chipboxes from racechip. They have VW Polo and Range Rover Evoque.
Edit: Hint: The performance data shown here represents maximum values achievable. The real performance output depends on the serial tolerances of the vehicle. We deliver the RaceChip with the best possible setting for your vehicle type. You can adjust the performance according to your requirements on the RaceChip. Last edited by Sillhuvet; 11-05-2012 at 06:46 AM.. |
Appreciate
0
|
11-12-2012, 02:58 AM | #34 |
SFBA Photographer
1
Rep 70
Posts |
This thread is so interesting.
Also, I did get in contact with BMS reps via email and both of the person i talked to said that when using their JB stage 1 for N20 engines - it will be invisible / no CEL or code - basically its safe without the need to delete these codes when going in for service. I wonder if this true. (Ofc to detach all tunes bfr going in to dealer). I need real tuner whom have used JB1 and serviced their car under warranty with no problem. Anyone? Replies much appreciated. |
Appreciate
0
|
11-12-2012, 08:45 AM | #35 | |
First Lieutenant
20
Rep 371
Posts |
Quote:
You see things on the dyno graph that are "stressful and your not happy with" but your not a professional tuner? ..........Ok : |
|
Appreciate
0
|
11-12-2012, 08:53 AM | #36 | |
First Lieutenant
20
Rep 371
Posts |
Quote:
You just spoke with the real tuners. If you are getting an oil change done or whatever else you can leave it installed. Now if you are going in for warranty work I would remove it. |
|
Appreciate
0
|
11-12-2012, 02:10 PM | #37 | ||
SFBA Photographer
1
Rep 70
Posts |
Quote:
|
||
Appreciate
0
|
11-12-2012, 02:18 PM | #38 |
First Lieutenant
20
Rep 371
Posts |
I don't believe they check the computer for tunes or piggybacks when getting your oil changed.
Yes the BMS piggyback is safe for stock engines. |
Appreciate
0
|
11-12-2012, 03:11 PM | #39 |
SFBA Photographer
1
Rep 70
Posts |
|
Appreciate
0
|
11-12-2012, 03:39 PM | #40 |
First Lieutenant
20
Rep 371
Posts |
Piggyback is the JB Stage 1 from BMS. The unit they sell is called a piggyback since it plugs into various sensors in the engine bay and "piggybacks" off the factory ECU.
Piggybacks essentially trick the factory ECU with what data it's receiving to make more power. |
Appreciate
0
|
11-12-2012, 08:25 PM | #41 | |
Second Lieutenant
45
Rep 202
Posts |
Quote:
Fuel has a 5-10% lean area at 3300-4200rpm vs BMW which seems to happen as HP levels out and then BMS gets rich on the torque dip regaining it's HP advantage over BMW, and then gets lean again at 5800-redline but this time it seems that BMW's tune is losing HP to BMS until some crazy engine change at 6200 giving BMW more torque and BMS less although I can only imagine this is a fluke though. The next two graphs seem to be +3psi (bottom) compared to BMW (top graph), neither is very effective at keeping boost at X but skipping the last spike at the end, BMW's has the tighter/more controlled range. http://www.n54tech.com/forums/showthread.php?t=15536 Personally from a driving perspective the torque curve itself is very peaky in an area that I don't use which generates impressive peak numbers below 3000, but I shift closer to 7? so the 4500+ area is important to me and the gap is decreasing compared to BMW on top of Terry telling me it was 'meant more for street cars, drag cars, etc' when asked about road racing DE type events. With all of that being said, one of these (probably BMS because they actually talked to me unlike some others) would be in my car right now if I didn't have to take it out every week that I wanted to do more than a 1/4mi run or a semi street legal sub 75mph punch up a freeway ramp but for these types of things, it's great. Also, Terry@BMS said that even the stock car can benefit from some additional octane and his setup definitely would. I didn't get a clear answer so I don't know if those dyno plots were with 91 octane (the highest commonly available to CA residents such as BMS) or if it was an e85 blend or something along those lines. |
|
Appreciate
0
|
11-12-2012, 09:50 PM | #42 | |
First Lieutenant
20
Rep 371
Posts |
Quote:
I'm glad BMS offers this piggyback from road or 1/4 mile use as you said. If BMS cracks the factory ECU and starts custom tuning that would be awesome! Regarding the lean areas you see, isn't this potentially dangerous for the engine if these areas are too lean? I'm going to be running an aFe cold air intake with aFe intake scoop so won't that cause more lean conditions? I will be using 93 octane since I'm in Ohio. |
|
Appreciate
0
|
11-13-2012, 12:04 AM | #43 | |
Major
36
Rep 1,105
Posts |
Quote:
|
|
Appreciate
0
|
11-13-2012, 01:50 AM | #44 |
SFBA Photographer
1
Rep 70
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|