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I have recently turbo'ed my L61. I am using a standalone ECU. I was hoping someone that has turbo charged their L61 could share with me their spark advance tables, and for what octane.
My ECU does not have provisions to read the stock knock sensor, so I don't have any feedback on knock count. I had a running setup for NA, it was not optimal but it ran. I have no data for the positive pressure section on my map.
you'd need to check with someone who has the same ECU. Tables from HPT won't fit into yours. If you're looking for a rough idea of what to start with and go from there, it can be from any boosted car, the general idea is about the same, timing goes way down as boost comes up, more so than regular N/A WOT sections. Largely dependant on what fuel you use if you can get a lot of timing in it.
Ecotecs like to run 16-18 on boost setups on pump gas, but without knock detection i'd start at 12 degrees and build from there, back off when you stop gaining power.
Any Speed Density based advance table for a turbo 2.2 will help. I understand timing has to be dropped with boost, I would just like to get a general feel for how the 2.2 should be across the entire RPM vs MAP range.
16-18 on 93? At what boost pressure? At what RPM?
Last edited by matthud; 05-03-2016 at 09:57 PM.
Reason: Meant Speed density not Alpha N
On a stock L61 engine I used to run about 15 degrees at WOT with M62 on 3.1" pulley making about 10-11 psi. This was mainly to try to prevent the possibility of bending a rod.
Our engines should be able to make power up to 24 degrees ignition timing advance. That is what I am running now with TVS and 2.9" pulley and water/methanol injection because I couldn't get over 14 without knock on 91. I am now running with my knock sensor unplugged because it is erratic and was robbing me of power by retarding my spark from false knock. You should be able to hear knock if you listen for it. However, I'm not sure how much detonation stock internals can handle without exploding.
On a stock L61 engine I used to run about 15 degrees at WOT with M62 on 3.1" pulley making about 10-11 psi. This was mainly to try to prevent the possibility of bending a rod.
Our engines should be able to make power up to 24 degrees ignition timing advance. That is what I am running now with TVS and 2.9" pulley and water/methanol injection because I couldn't get over 14 without knock on 91. I am now running with my knock sensor unplugged because it is erratic and was robbing me of power by retarding my spark from false knock. You should be able to hear knock if you listen for it. However, I'm not sure how much detonation stock internals can handle without exploding.
05-01-2016 | 06:53 PM
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