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Read the WELCOME ALL BMWFANATICS post.
Dastek Chip
- Thread starter KarshS
- Start date
P Smit
New member
The basics of chip tuning on a NA production car, are as follows:
1 air fuel ratio
2 ignition timing
3 economy maps and performance maps
All these aspects are normally done at intervals of 400rpm. Irrespective of what type of chip you use, thhe principles applied are all the same. Nothing more can be tuned. The chip tuning actually brings a NA engine closer to it's theoretical design spec. If the deviation from the design spec is small, the chip tuning will have a smaller effect.
Chip tuning will render only small gains for modern production engines, on average 5% for NA engines, sometimes a bit more or a bit less.
The graph you posted does not show pre- and post figures. Comparative figures will give a clearer picture of gains or losses.
Another aspect is the accuracy of dynomometers, some are more optimistic than others. A good way of testing the performance is to do acceleration tests before and after the tuning, measured with proper measuring equiment under similar type of circumstances.
I think that Chip Logic does ram-mapping, I am of the opinion that it it not more effective than Unichip tuning. I speak from experience.
Guys with good technical skill and knowledge are the guys at Rob Green Motorsport, specifically Steve Green in Randburg.
Also remember after fitment of a downpipe and filter, you will gain with chip tuning the same amount of Kw's as before those mods.
Because the Chip tuning makes the engine normally to deliver the power smoother at low revs, the acceleration might misleadingly feel worse. Be very objective when you have chip tuning done on a NA engined car. Do not expect bags full of extra power.
Please ask the tuner to furnish you with the pre- and post performance graph. The two graphs in itself will render the percentage of increase gained. Also good to do a dyno run on diffirent dyno before and after the tuning has been done to get a comparative test printout.
1 air fuel ratio
2 ignition timing
3 economy maps and performance maps
All these aspects are normally done at intervals of 400rpm. Irrespective of what type of chip you use, thhe principles applied are all the same. Nothing more can be tuned. The chip tuning actually brings a NA engine closer to it's theoretical design spec. If the deviation from the design spec is small, the chip tuning will have a smaller effect.
Chip tuning will render only small gains for modern production engines, on average 5% for NA engines, sometimes a bit more or a bit less.
The graph you posted does not show pre- and post figures. Comparative figures will give a clearer picture of gains or losses.
Another aspect is the accuracy of dynomometers, some are more optimistic than others. A good way of testing the performance is to do acceleration tests before and after the tuning, measured with proper measuring equiment under similar type of circumstances.
I think that Chip Logic does ram-mapping, I am of the opinion that it it not more effective than Unichip tuning. I speak from experience.
Guys with good technical skill and knowledge are the guys at Rob Green Motorsport, specifically Steve Green in Randburg.
Also remember after fitment of a downpipe and filter, you will gain with chip tuning the same amount of Kw's as before those mods.
Because the Chip tuning makes the engine normally to deliver the power smoother at low revs, the acceleration might misleadingly feel worse. Be very objective when you have chip tuning done on a NA engined car. Do not expect bags full of extra power.
Please ask the tuner to furnish you with the pre- and post performance graph. The two graphs in itself will render the percentage of increase gained. Also good to do a dyno run on diffirent dyno before and after the tuning has been done to get a comparative test printout.
R
Rolf
Guest
@P Smit
Very well expressed! :bravo:
Very well expressed! :bravo:
imp:
P Smit
New member
Mods to be considered:
Decat freeflo exh, cold air induction kit WITH a larger inside diameter air mass meter unit, cams modded for longer duration, cylinder head flow and cc'd as well as increased compression ratio, Dastec Unichip. Get yourself ready for at least R20-R25k.
It will still not even catch an old 330i !! But it will be much stronger.
Otherwise, if you don't want to spend that much, stick with a good Unichip tune and proper exhaust system for starters. Cold air kit alone won't help much, especially in town driving, you need more cc's or revs, and both are even better, that means M3!!!!!!!
:joy:
Decat freeflo exh, cold air induction kit WITH a larger inside diameter air mass meter unit, cams modded for longer duration, cylinder head flow and cc'd as well as increased compression ratio, Dastec Unichip. Get yourself ready for at least R20-R25k.
It will still not even catch an old 330i !! But it will be much stronger.
Otherwise, if you don't want to spend that much, stick with a good Unichip tune and proper exhaust system for starters. Cold air kit alone won't help much, especially in town driving, you need more cc's or revs, and both are even better, that means M3!!!!!!!
:joy:
