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Old 09-10-2019, 12:36 PM   #394 (permalink)
Ecky
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ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)

Oxygen Blue - '00 Honda Insight
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Here are some of the supposedly stock timing I have to work with:

04-05 TSX (in KPro)
07 TSX (in Flashpro) - same engine, same low cam lobes
09 TSX - cams are very similar to 07, has a one-port header
12 Civic Si - physically identical to the 09 TSX










A few points of comparison between these nearly identical engines:

2000rpm / 300mbar
05 TSX: 45 degrees
07 TSX: 40 degrees
09 TSX: 48.6 degrees
12 CSi: 51 degrees

3000rpm / 200mbar
05 TSX: 50 degrees
07 TSX: 40 degrees
09 TSX: 60 degrees
12 CSi: 53 degrees


3500rpm / 1bar
05 TSX: 32 degrees
07 TSX: 30 degrees
09 TSX: 27 degrees
12 CSi: 27 degrees

1000rpm / 1bar
05 TSX: 8 degrees
07 TSX: 15 degrees
09 TSX: 11 degrees
12 CSi: 11 degrees

Again, supposedly "stock equivalent" maps. Physically these engines are all nearly identical, same geometry, with the 09+ engines moving from a 4 port header to an integrated header with one port, and having (I believe) very slightly less aggressive cams. At WOT the timing is similar, but lightly loaded these maps are massively different, 20 degrees difference in ignition timing in some cases.
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