Was thinking about a remap on the wee Polo though. Wonder how it would affect it.
Had a 1986 Golf GTi 8 valve. It had the Bosch K Jetronic Injection, required 98 RON petrol and pulled like a train at any revs.
Replaced it with a 1989 Golf GTi 8 valve. Identical car in every way, 112 bhp, 112 torques but it had Bosch Digifant injection fitted, would burn any grade of fuel you threw at it and felt very weak. When you looked closer at the specs the revs where power and torque were produced had moved higher, power from 5500 to 6000 and torques fron 3000 to 4000. So if you drove everywhere with more revs on it drove just the same as the earlier car but was simply not as pleasant.
Racing friend of mine had just taken on a franchise at his workshop from a well know engine chip manufacturer. Deal was I got the chip at trade and he fitted it FOC and did a power a curve before and after on his rolling road.
The company claimed an extra 12 bhp, it had 3 more so not a great result. The torque curve was definitely flatter so it should have driven better but there was a major issue. The CO readings and HC readings had gone way high to MOT failure levels, it appeared to be simply overfuelling the engine. So chip was removed and sent back.
Soon got used to the car and in reality it could not have been that bad, kept it 7 years and 113,000 miles.
Would I chip or map a car again, never.
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