Knock and timing

[rookiegst]

Hello. Since i have a 2g, and as far as i know i don´t have a knock sensor, i want to figure out what could i do to log knock in a data logger. Also, i don't have an Eprom, and DSMLink is really not an option right now, so i would appreciate any suggestions or opinions on data loggers that i could find useful to tune my timing and log knock.
Thanks everybody.

 

[red95tsi]

You have a knock sensor on your car. Its below the intake manifold and it screws in the back of your block. Once you get a logger you can log your knock.

 

[bmwisthekey]

You cannot read knock via a datalogger on a 2g. You will need to look at the timing advance and make assumptions.

I believe with dsmlink it will somehow show or calculate knock for you.

 

[rookiegst]

Tanks for your reply's, but how can i adjust my timing, i mean, what logger will allow me to do that?
I´ve heard that the ecu automatically advances timing when getting knock, but only at a certain amount, then it can't adjust no more, how do i know when the ecu cannot compensate anymore for the knock?
I'm worried about this, since my goal is getting at least 450hp, so big boost often means big knock.
Thanks

 

[Rice Over Wheat]

There are lots of tech articles about this...use the link up top under the banner.

 

[boosted86]

the only way to adjust timming is with cas, its a round looking thing thats on the left upper corner of your cylinder head, you adjust it by turning back for retard, and fowad for advancing timming. www.vfaq.com has a good thread on setting base timming

 

[bmwisthekey]

However he does not have a 1g cas to adjust his timing, he would need to swap a 1g CAS onto his head. The total timing advance can also be adjusted thru a keydiver chip, dsmlink etc..keep in mind whatever your base timing is will have a direct effect on the total advance you will see.

As for knock i believe its something like 1-3 counts of knock ecu keeps advancing timing, 4-6 counts it stops advancing, and 7 counts it brings timing back to base timing, then for every 3 counts above 7 it retards timing 1 deg. This might not be totally accurate but you get the idea.

 

[eclipsegsx1736]

If you don't want to get DSMlink or a chip (both require an EPROM), then your only other option for adjusting timing on a 2g is with an SAFC and a logger. www.pocketlogger.com or www.dsmloggers.com are fine, then get an SAFC I or II. You can effectively increase timing over stock by using an SAFC along with larger than stock injectors. When you lean out the SAFC, the ECU will add more timing. You can log the new settings with your datalogger to make sure you aren't knocking. You want to shoot for at least 16 degrees peak advance in your logs by redline with no significant dips in timing, and as previously stated there are some great tech guides in the tuning section about this.