Chip upgrade for E34 520i M50 non-vanos unit
- Thread starter ktteoh
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i am using viper2 for my m20b25. Good, so far, noticed that the flat spots from 2000-2500rpm has been removed and no rev limits as well. Car pull very strogly from 2500rpm upward. Engine seems smoother as well. Mine is an Auto though. Should see better gains if Manual. Got it for 50quid incl. postage.
the chip comes from uk, so it is tuned for petrol of 95 octane plus, it wont hurt the engine as the chip was remap to unleash its true potential. In fact the car now idles better ( slightly higher at 1000rpm), better fuel consumption and felt stonger. Just diy, very easy, less than 15 minutes.
535i
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My observation ; ALPINA chip
1) Higher idle circa 900 rpm
2) Fuel cons is slightly better !
3) Mid-range torgue improves a lot
4) Cut-off at 6,900 rpm
Yeah .. it will affect the engine in the long run ..
Sebab .. always tekan pedal to metal
1) Higher idle circa 900 rpm
2) Fuel cons is slightly better !
3) Mid-range torgue improves a lot
4) Cut-off at 6,900 rpm
Yeah .. it will affect the engine in the long run ..
Sebab .. always tekan pedal to metal
pussy
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what about the CDA filter ? does it help ?Originally posted by 535i@Feb 13 2005, 08:52 PM
My observation ; ALPINA chip
1) Higher idle circa 900 rpm
2) Fuel cons is slightly better !
3) Mid-range torgue improves a lot
4) Cut-off at 6,900 rpm
Yeah .. it will affect the engine in the long run ..
Sebab .. always tekan pedal to metal
Jipster
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........tempat rahsia..........its so rahsia even I dunno what u are tokking about.............
Mr ktteoh....there is a point to all this moronic dribble....there are certain people here with the knowledge, means and time to programme udm chips.....if the test mules prove that they work, it will add to the (cess)pool of knowledge thus allowing these people to ....perhaps....later.....sell u a chip to go with your fish...I mean engine...... (this sentence added on to keep semblence of relevance and avoid being ranted at by the moderator)
Mr ktteoh....there is a point to all this moronic dribble....there are certain people here with the knowledge, means and time to programme udm chips.....if the test mules prove that they work, it will add to the (cess)pool of knowledge thus allowing these people to ....perhaps....later.....sell u a chip to go with your fish...I mean engine...... (this sentence added on to keep semblence of relevance and avoid being ranted at by the moderator)
mine is a m20b25 afm (auto)and not m50 which is on MAF. The rpm is actually about 950-1000rpm, anything less and the car will idle hunts. In fact with a modified chip, the engine will tend to idle higher, the CO value is the parameter that determines fuel consumption. U can have low idle and the CO value varies from low or high. The Motronic 1.3 with AFM is very difficult to tune to obtain precise metering. Besides my car is without the O2 sensor therefore the ecu will not monitor the o2 content but fixed it to the default rate. Mebe i should consider adding the O2 sensor. Fabian, pls help, i believe your car is O2 sensor fitted.
mrhartge
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AFM vs MAF
maf = mass air flowmeter
afm = air flow meter
MAF kit replaces your stock AFM (the big flapper style air flow meter) with a mass air flow sensor this does not have a big flapper that you have to move out of the way (less restrictive). the kit also has an adjustable fuel/air ratio calibrator and fuel/air meter so you can adjust your fuel/air mixture and thus get more gas and air into your engine ( = more hp ). Im not a very technical person so if you want more info go to www.splitsec.com or www.bmpd.com or even www.seambmw.com and read up.
hope the above clarifies & i may b wrong.....
