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05-22-2014, 08:00 PM | #67 |
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thanks for the update! got any 1/4 mile times or dyno figures?
I haven't heard of TMC.. if it isn't a well known chip, make sure you do some data logging to make sure it is a safe tune |
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07-15-2014, 10:01 AM | #68 |
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Considering this product: http://www.tmcmotorsport.com/TuningB...px?s=996778732
I have the 2012 20i N20 w/manual 6 gear transmission. Anyone here with experience chip-tuning the 20i with a manual gearbox? Have contacted TMC and got a very prompt answer, where they said it should be no problem. My more technical friends say higher turbo pressure could be more straining on the turbos, but that power train and gear box should be zero risk. Have also cross-checked the turbo charger parts at realoem.com and they really do seem to be exactly the same. The risk should then be minimal? I mean if the pressure is the same in the stock 28i with the exact same part... Before I go ahead, anyone here tried this tuning box with the manual 6 gear transmission or have opinions on something that could go wrong? Cheers, -S- |
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07-15-2014, 10:04 AM | #69 |
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BTW, some asked about dyno data - found this graph (see attachment) and the improvements seem to be all over the rpm range :-)
Credit card burning in my pocket to order this! |
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07-22-2014, 04:14 AM | #72 |
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There's still a big difference between the modes. I guess with the chip it now behaves similarly to a 28i in comfort and sport mode.
Over 19,000 miles on the clock now and it's still running great. Manual 6 speed btw. |
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07-22-2014, 06:58 AM | #73 |
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Interesting, TMC told me the opposite - that both modes would now be the same... Looking forward to get the unit. Will try to time 80 to 130 km/h in fourth gear to quantify practical effect and post here.
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07-22-2014, 01:42 PM | #74 | |
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TMC 28i dyno
Quote:
I did consider the TMC - but decided to go for the JB4 Why?
Negative of JB4
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07-25-2014, 05:34 AM | #76 |
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It actually arrived today! The installation manual does not say anything about the placement of the actual tuning box. Do you (psytse or others) have advice on how to fixate it? Will strong velcro do the trick? And what is the best/safest placement in terms of heat etc? Maybe I have to go to a workshop after all... :|
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07-27-2014, 06:31 AM | #77 |
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I manned up and did it myself :-) Combo of blushing and pride when I used DUCT TAPE (after sticking it in place w/adhesive pads) under the hood of my Z )) I will change it with something more permanent in a while (even good duct tape does not love the heat). The placement I chose for the tuning box for now was vertically on the back of the windshield fluid box, would love some tips and comments about what others have done here.
Regarding performance I was a tiny bit disappointed about "relative low RPM 6th gear improvements", which I was really hoping for. Still feels quite "dead" pushing down the pedal at 110 km/h without shifting down. But 3rd and 4th gear on medium RPM seems to have gotten a lot more punch. The 80 to 130 km/h in 4th timings proved quite hard to do exact, but roughly a second improvement I would say. Subjectively I also felt quite a bit of improvement on a typical 3th gear overtake (similar acceleration as the one I timed, but obviously on higher RPMs). MPG seems to be more or less exactly the same, wishful thinking might indicate a 5% improvement. The manual "boost meter" on the tuning box was set to 6 (ouf of 10) on arrival. Left it unchanged (no Spinal Tap 11 on the scale, very disappointed). Happy so far, as I mentioned I would love input on the best way you guys have found for fixating the box. |
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08-01-2014, 08:33 AM | #78 | |
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As I was able to get my JB4 in my DMU box Hope you still enjoying the extra power
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08-01-2014, 09:19 AM | #79 |
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Sure, used strips for the cables - pretty decent. But still to figure out a more elegant way for the main unit. Thinking about getting a second windshield fluid box and swapping them when leaving the car for service - then I could mount it properly on the back of it...
Yeah, I really enjoy it - the car runs quickly on its turbo-induced feet these days! |
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08-01-2014, 04:08 PM | #82 |
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08-04-2014, 07:11 AM | #83 | |
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However you can change your Maps on the fly, with the JB4 Stage 2
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08-06-2014, 02:29 PM | #84 |
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Txs for the replies folks. Any more info on what the the setting are changed to with the dial - i.e is full boost 10 & what is 'full boost' ....as anyone changed from the default 6 with good results.
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08-06-2014, 05:15 PM | #85 |
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Smoke - seriously I would not recommend going for warp factor 10!!
There is little usage of TMG on BMW's - As I spent ages researching The N20 is an new engine, and its reliability is not truly known If you ramp the torque up to much, there are reports of busting the crank But its not my car --
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08-07-2014, 03:37 PM | #86 | |
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Agreed, and txs for the concern from reading looks like setting 7 or 8 is best. Would like to know AFR's at high rpms for both TMC on setting 8 and JB4 on map 2 - the info hunt continues ! |
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08-26-2014, 06:18 PM | #87 |
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Quick update after driving for a few weeks: Super happy with the TMC. Also my mounting on the back of windshield fluid box (ended up using a glue gun plus duct tape in case it should break from vibration, plus stripping the wires) is smooth enough.
In my mind I feel I have a tad bit more turbo lag than I had before, but in any case (both from subjective feelings and repeated timings) the car is significantly faster. Also, the cold engine start sound is eeeeeven cooler than before! Nerd-sidetrack: Curious how the N20 is assembled? Have a look: |
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10-10-2014, 09:27 AM | #88 |
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Hello , any news about the chip tunning ? I wonder users feedback about different companies , I am planing to order JB4 for my 2.0sdrive but I have some hesitations about being harmfull to the engine in long term.
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