Breaking Cams With A Base Map?

[Richie-Van-GTi 73 2 Cars]

How good will a base map need to be in order to break cams in? Ive ordered my MS so all being well I will be in a position to start the car soon but I dont fancy bore washing or kkilling a valve etc trying to break the cams in. I know I will struggle to find a map that ill fit my spec so hoping a simple 2.0 16v map will be good enough.

[Anthony 1,003]

Wouldn't have thought that it would have to be that close - they'll be no load on the engine so the ignition timing isn't too crucial and should run on a fairly large fuel mixture range happily

[snillet 1]

The MS basemaps are "fairly" good actually, as a startingpoint, as soon as you get req fuel etc correct.

 

And you need to know that some people struggle for hours before they get the engine to start up and manage to keep it running on first start with MS.

 

If you have a NB O2 sensor setup you can put that one into action over say 40 degrees of CLT with a HUGE amount of allowable egocorrection, since i guess you´ll be breaking in the cam at about 2000-2500rpm at a steady, that means that once you reach 40 degrees CLT it will regulate to 14.7:1 and fuel washdown wount be a problem.

 

But that means you´ll have to set it to something like 75% allowable regulation, and at least on my machine between16 and 32 cycles per change is good depending on what rpm area you want it to be best in. I would go for 32 for your breakin thingie though.

[deadcatdave 0]

I'd guess that most cars with aftermarket ECU's and a fresh rebuilt engine/cam would have been broken in with a base map.

[Richie-Van-GTi 73 2 Cars]

I know its not an exact way of doing things but say if I got a map for a 2.0 16v running smaller injectors or something could I then maybe take the fuel amount, divide by 2 and multiply by 2.1 then divide again by standard injector rate and multiply by new injector rate type thing to scale the fuueling to more or less suit? I know it wont be anywhere near precise but would that get me to a reasonably close figure?

 

Snillet, sorry but most of that went way over my head, what is CLT? I am using a wideband lambda.

[snillet 1]

I know its not an exact way of doing things but say if I got a map for a 2.0 16v running smaller injectors or something could I then maybe take the fuel amount, divide by 2 and multiply by 2.1 then divide again by standard injector rate and multiply by new injector rate type thing to scale the fuueling to more or less suit? I know it wont be anywhere near precise but would that get me to a reasonably close figure?

 

Snillet, sorry but most of that went way over my head, what is CLT? I am using a wideband lambda.

 

 

CLT is coolant temp.

 

The narrowband lambda works directly without the "risk" of any fuzz if you´re afraid of overfuelling during the breakin.

 

As i said above though, as long as you get the req-fuel setting correct the MS basemaps should work fine for you, as soon as you get the bugger started, cranking fuel amounts and all that stuff can be a pain at first start.

 

EDIT---- there are basemaps included with the MS install that functions ok as starters for most engines, didn´t explain that clear enough i think.

Edited July 19, 2007 by snillet

[Richie-Van-GTi 73 2 Cars]

excellent thanks, didnt know there was basemaps installed

I guessed it may be coolant temp but as it was mentioned with lambda I wasnt sure