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Message: <blockquote data-quote="140dB" data-source="post: 1900677" data-attributes="member: 10996">dats y.....this fella put in a car wif knock sensing....so ecu relearn itself......if ur ecu smart like this ecu than can larr.....what if ur ecu a bit stupid 1. engine knock itself to bits? heheh lets hope not larr....btw, as discussed, as ecu gets smarter wif so may 3d maps interelated wif other 3d maps, maybe simple analog piggy is better for the casual tuner. For a tuner which knows the particular ecu program code inside out, lives, eats, sleeps that particular ECU,i feel a programmable digital system should be more accurate for maximum tuning. then comes the fully programmable ecu which almost all race teams use. wonder who makes an analog programmable ecu heheh...regarding ign timing tuning, i selected emanage because it had that feature. however, as i tested my car, i found that even at 0.5 bar boost on a stock 9.5 CR, im running NO ignition timing retard wif NO audible knocking. This was confirmed as i read an article about how engine lose volumetric efficiency as revs climb. all due to the mass of air unable to fill the cyl at high speed. so what im trying to say is, a lot of NA cars wif small turbo's knock around 3-4krpm because the intake manifold is tuned at that rpm where the volumetric efficiency is the highest, thus even a little boost at that rpm will "overfill" the cylinders causing the combustion chamber pressure to be too high. much higher boost pressures at a higher rpm wont cause the knocking it caused at 3-4krpm. a lot of turbo kit manufacturers purposely size their turbos to be on the large side i believe because of this reason. look at the greddy integra b18c kit. it uses a td05-20g which would be considered large for a 2.0cc what more 1.8cc car.....So.....u can boost without retarding ign timing. but selection of turbo, intake manifold, max boost pressure, cams will determine if ur stock CR engine will knock.....my 2c</blockquote>