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D3 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again |
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Tuning the 4.2 Litre Petrol ECU
You can download Lemmiwinks from Here!!
Again you need a VAGCOM serial compatible cable although you do not use VAGCOM! You can tune various parts of the ECU from here. This is NOT a remap, just altering various settings to achieve a more smoother ride. I can help with the settings, though this is at your own risk and meant for people who already under the principals of tuning. Therefore this is purely a Lemmiwinks guide. Channel 6 learning adaptation by making it faster can vastly improve performance, though will use more fuel. Simply as the car will respond quicker to a spirited drive, not like a wafty big cruiser.... I suggest full monitoring of knock sensors etc. whilst tuning the rest of the car!!! Ch01 : Idle Speed Offset Adjust idle RPM level - Higher number: increase idle rpm - Lower number: decrease idle rpm Ch02 : Fuel Tweak (Accel Pump); Increasing Loads -This channel adjusts a fuel enrichment under load -Modulates Throttle Response Ch03 : Fuel Tweak (Accel Pump); Decreasing Loads -This channel adjusts a fuel enrichment term coming off the gas or decelerating. Ch04 : Start Up Fuel Enrich Amount of fuel on any start ups? - Higher number: enrich the mix - Lower number: lean out the mix Ch05 : Warm Up fuel Enrich Amount of fuel on start ups E.G. on the first start in the morning? - Higher number: enrich the mix - Lower number: lean out the mix Ch06 : Lambda Regulation Controls how fast ECU adapts: - Higher number: faster adaptation - Lower number: slower adaptation Ch07 : Additive Offset To Speed Limiter Controls speed limiter in increments ok 1km/hr Ch08 : Secondary Fuel Tweak It adjust gain on the injectors responce - Higher number will increase the injector responce (smooths the ride) - Lower number will decrease injector responce (decrease backfires) Ch09 : Ignition Timing Offset Controls timing in steps of 0.75 degrees, all RPM range is altered - Higher number advances timing - Lower number retards timing Ch10 : Primary Fuel Tweak Controls fueling on run, ussually change multiplicative fuel trims - Higher number enrich the mix - Lower number lean out the mix Ch11 : Unused Unused Ch12 : SEL Scaling (Turbo Cars Only) Adjust fueling maps according to boost settings - Higher number increase injection period for higher boost - Lower number decrease injection period for lower boost Ch13 : OFF OFF Unused Ch14 : Idle Torque Additive Offset Controls engine load at idle - Higher numbers: spec load at idle is increased - Lower numbers: spec load at idle is decreased Last edited by A8 Doc; 22nd January 2009 at 09:00 PM. |
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