Thom

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Hi, New engine reusing all ECU hardware - except coils - from trouble-free running previous engine, now misfires under load. Getting trigger #1 error exactly when it misfires. Trigger 1 is Bosch VR sensor. Trigger 2 is Hall sensor used for sync. Base timing checked and rechecked OK. Coils are black top NGK U5015, same as R8 coils. Dwell set at 2ms. Plugs are NGK BPR7ES with 0.7mm gap. The only ways to get the engine not to misfire so far was either to run large spark plug gap like 1mm or massive amount of advance, but as soon as trying to boost it still misfires. Also getting misfires at high rpm under vacuum. How do I tell if the coils are possibly causing electrical noise to the wiring of the trigger sensors? Previous coils were Delco D514a running 4ms of dwell and worked perfectly with the previous engine but were replaced for packaging reason. Been resisting trying to run the new R8 coils with 4ms of dwell as they apparently would fry. Still not clear to me if the trigger error is caused by the misfire or the opposite, as the engine revs absolutely fine on a standstill.

René mentioned he was able to perform the update by reinstalling the Link software at its default location. The engine is running again - Thanks guys.

Hi, A friend tried to update the firmware on his G4+ Xtreme and things went wrong. Here is some message error he gets on his laptop : "ECU is running in........BOOT MODEWarning: Last update was not complete. Engine will not start in this mode. Continue with update to boot main code.Current ECU firmware information -----------------------ECU firmware version : 5.1.0.0Bootcode Version : 1.6Board S/N : (note : I blanked this)ECU type : (note : I blanked this)Read the version notes before proceeding" As he launches the update, he then gets : "an error ocurred which interrupted the firmware downloadplease run the firmware loader again.Cannot create file "c:\Program Files (x86\Link G4\PCLink G4+\Firmware\tempqw". Access refused" Thanks in advance for your help.

Agreed, Dave helped me many times on several issues and always got me through. Without his nearly constant availability and his assistance, the Vi-PEC/Link G4 software would not be such a pleasure to use. Thanks Dave.

Got the code earlier today from Link UK. Thanks!

Hi everyone, I am helping out a friend to set up a Link G4+ Extreme on his Audi RS2 and when launching the software online we are asked a code to enable the ECU. Can someone please point me towards the right person to contact to get this code. Sorry if this is not the right place for asking this, but since I am a Vi-PEC user I thought I would try here. Thanks, Thom

Hello, Any progress?

Agreed Dave, and sorry - I had overlooked the initial issue, but it made me think of an issue I have, and which I think coud be relevant to this topic, if you don't mind me posting here : I do not get any wheel spin in 3rd or 4th gear, but since the turbo loads quite a bit earlier in 4th gear, I was thinking that it would be great to be able to use separate values of PID for 3rd gear to improve spool in 3rd gear. Since this is not possible, and if I follow the logic behind the existing two gear trim tables, then I can increase the trim in 3rd gear by pondering the duty cycle table to get a sharper boost build up during Stage 1 and 2. However, by doing this, will D be still high enough to avoid any boost spike in 3rd gear? Inversely, isn't P still going to be "too high" for 3rd gear? The point I'm trying to make here is that we use the same P & D values for boost curves between gears that will necessarily not have the same sharpness from one gear to another. Sorry for splitting hair, but Close loop boost control used to give me a hard time until I eventually figured out I needed a soft WG spring, and I have become a bit maniac on this topic ;-p

Hi Dave, Here is what's mentioned in the Help file : "With a base duty cycle of 50%, a proportional gain of 5.0 and a current error of 10kPa, the base duty will be trimmed to 55% = (50 + (5.0 * -10 * 0.1%)" Since P directly ponderates the value of the base duty cycle, trimming the DC table (in function of gear or whatever) has the same result as modifying P would, but the Maths show, looking by the formula, that ponderating P (& also D) in function of gears would allow smoothening the boost curve with more finesse than ponderating the base duty cycle in function of gears, especially during the most relevant Stage 2 of the closed loop algorithm, when both P & D are active.

Trimming boost with either the Boost Gear Target Trim Table or the Boost Gear Wastegate Trim Table kind of throws out of the window the logic behind the PID settings from the closed loop boost control, as pondering the values in both tables before peak boost is reached is pretty much like modifying P & D. As far as I have noticed it is not possible to trim P & D directly in function of gear, but this would make things a lot easier when controlling boost in closed loop...

Hello, Is there a way to dial in some kind of deceleration enleanment using the rate of decrease of TPS percentage? Thanks

Hi Dave, It works, thank you. Really sorry to hear about your health issues, a double stroke is something serious!! Best wishes for a full & quick recovery. BR, Thom

Thanks Dave. Yes I know it works for a Dial Gauge, as explained in the Help files, but surely there must be a way to adjust this with a Digital Gauge as well, as when I'm not Online the gauge shows a black background...? Thanks.

Hello, I have searched for this through the help files with no success. When setting up a Digital Gauge, there is no mention on how to adjust the level past which the data will be displayed in a red background colour. The closest I think I have found to this topic was adjusting the values in the "Fault Settings" window, but it made no difference, and my EGT digital gauge keeps displaying in a red background even when EGT is below 500°C... Thanks.