Link Modelled

I will be giving a go at the Link Modelled set up . In the webinar both in regards of the modelled and the charge temp approx. it was mentioned about the IAT and the cold start . Will the other compensations such as post start enrichment need to be dealt the same way ? Like zero it completely and if needed do some fine tuning or tune it as normall ?

That's a great question.

I hope the following doesn't contradict what's in the course, but I start with non zero post start, warmup, and cranking enrichment values and then adjust as needed. If you zero them the engine might not start, or might not stay running post start. The defaults Link offers may not be perfect for your application, but I wouldn't zero them out as they'll likely help you get things going.

I suggest focusing on just getting the engine going at first, and getting it warmed up. Then tune all the main tables while the engine is warmed up including main VE table, then IAT, charge temp approx. etc., making sure warmup and post start tables are not having an impact when the engine has been running and is at full operating temperature.

Once VE table tuning, IAT, charge temp comp etc. are done, then I turn the engine off and restart it to tune tables related to hot restart (cranking and post start).

When happy with that I let the engine cool. Once cooled to near ambient, I get the wideband pre heated and logging, start the engine and see how things go during start, post start, and warmup on a cold engine. I adjust those tables and NOT the VE table to get air fuel on my targets.

Then I repeat cold, medium temp starts until cranking, post start and warmup dialed in.

Thank you Mike for the reply .

Wanted to add the following questions although I would assume that it should follow the same priciples as traditional tuning . How would vvt and accel enrichment procedure be affected or suggested to be tuned when in modelled mode ?

Dimitrios,

You're welcome!

You are correct, you can use the same processes for VVT and Accel enrich tuning.