Chip tuning is a pretty attractive way of tuning the car. It's based on the optimization of the program of engine management. Increase of engine power and torque is a result of such optimization. It is possible to reduced fuel consumption and reduced emissions by the way.Depending on the type of engine effect can vary considerably. So atmospheric petrol engines chip tuning increases horsepower and torque from 7 to 13%, on turbocharged engines, the maximum power increase up to 35% and torque by 40%. Modern diesel are the most attractive for this event. As a result, the chip tuning You will have a completely different car: more dynamic, with better thrust at low rpm, and when driving in normal mode is more economical.
But we must bear in mind that chip tuning can only be done by car with a working engine. It is quite useless to use chip tuning, if the decrease in engine output has occurred as a result of deterioration of its mechanics or the failure of any datenow. If the engine needs repair, chip tuning will only hasten its arrival. To get a good result only on the serviceable engine.
Chip-tuning includes next steps:
1) Read the firmware from the engine control unit (ECU).
2) Change the necessary information and checksums in the firmware.
3) storing the updated firmware into the controller.
The first and third steps of the process from a technical point of view similar, and depending on the type of ECU are performed in different ways:
- special equipment is deducted via the diagnostic connector of the car
- deducted by connecting equipment directly to the contacts of the ECU
- by watering of the chip from the ECU and reading the firmware directly from the chip using a programmer
A particular method is selected depending on the control unit and from the "features" of a car workshop.
It should be noted that in most ECU's, released prior to 1997, the program is stored in a special chip with UV erasing and reading/writing necessary to remove the memory chips (usually by feeding) and programmer for microchips of this type, and to erase the original program (before recording tuned) requires ultra-violet lamp.
The second stage chip tuning - editing programs controllers. In this situation, the result of the chip tuning depends on the experience of the person who makes changes to the controller.
Here it is necessary to pay special attention. You must only work with the original firmware. The fact is that in the manufacturing process of the ECU in their program are various changes and programs the ECU on the same engine, but released at different times will be different. And if your block will be written to tuned firmware with the same unit, but with that modified by the manufacturer program, the result can be unpredictable. In the best case the car will not start, at worst You enjoying the extra horses under the hood, after some time, you will begin to notice that the engine sometimes fails, and not linking it with chip tuning, can keep wasting a lot of time and money have not solved the problem.
Chip tuning BMW 3er E36
The table below is a list of BMW 3er E36 with different types of engines. For each of the engine power in horsepower, power in kW, torque and speed BEFORE and AFTER chip tuning.
| make, model, engine | Power, HP | Power, kW | Torque | Speed | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| before | after | DIFF. | before | after | DIFF. | before | after | DIFF. | before | after | DIFF. | |
| BMW 316i | 102 | 111 | +9 | 75 | 82 | +7 | 150 | 168 | +18 | 195 | 199 | +4 |
| BMW 318 TDS | 90 | 113 | +23 | 66 | 87 | +21 | 190 | 255 | +65 | 182 | 196 | +14 |
| BMW 318 TDS Compact | 90 | 113 | +23 | 66 | 87 | +21 | 190 | 255 | +65 | 175 | 190 | +15 |
| BMW 318i | 115 | 127 | +12 | 85 | 93 | +8 | 168 | 187 | +19 | 201 | 205 | +4 |
| BMW 318is | 140 | 151 | +11 | 103 | 111 | +8 | 175 | 198 | +23 | 213 | 218 | +5 |
| BMW 320i | 129 | 140 | +11 | 95 | 102 | +7 | 164 | 182 | +18 | 197 | 205 | +8 |
| BMW 320i 24V | 150 | 163 | +13 | 110 | 120 | +10 | 190 | 212 | +22 | 214 | 219 | +5 |
| BMW 323i | 170 | 182 | +12 | 125 | 134 | +9 | 245 | 272 | +27 | 227 | 233 | +6 |
| BMW 325 TD | 115 | 141 | +26 | 85 | 104 | +19 | 245 | 288 | +43 | 198 | 208 | +10 |
| BMW 325 TDS | 143 | 175 | +32 | 105 | 129 | +24 | 260 | 320 | +60 | 214 | 220 | +6 |
| BMW 325i | 170 | 186 | +16 | 125 | 136 | +11 | 222 | 243 | +21 | 218 | 225 | +7 |
| BMW 325i | 192 | 206 | +14 | 141 | 150 | +9 | 245 | 280 | +35 | 233 | 240 | +7 |
| BMW 328i | 193 | 211 | +18 | 142 | 149 | +7 | 280 | 300 | +20 | 236 | 242 | +6 |
| BMW M3 3.0 | 286 | 305 | +19 | 210 | 224 | +14 | 320 | 340 | +20 | 250 | 265 | +15 |
| BMW M3 3.2i | 321 | 340 | +19 | 236 | 250 | +14 | 350 | 382 | +32 | 250 | 265 | +15 |