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Old 06-01-2009, 11:19 AM   #1
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Default Timing Table for Lower Compression 1.6 GT28r?

Anyone running 1.6 with lower compression pistons and GT28R running 16+ psi? Can I check out your timing tables?

I'm using the generic FM 1.6 timing map, and it looks really conservative. I had it on the dyno, and it was only making 200 whp at ~16.5 psi. The last owner said the pistons were 8.5:1, but anyone know a good way to verify?

After messing around with timing, it got to 230 whp at 16.5 psi, but I think it's still conversative. I'll post the timing table and dyno plot when I get home.

Last edited by rippledabs; 06-02-2009 at 05:38 PM.
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Old 06-01-2009, 06:47 PM   #2
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in all seriousness, you could probably bump 10* of timing more in boost to your map and still be conservative.
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Old 06-01-2009, 06:56 PM   #3
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NO NO NO, don't tell him that. Next thing you know he's going to blow his motor. In all seriousness, just fork out the cash to get it professionally tuned.
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Old 06-01-2009, 07:15 PM   #4
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here's the table he's running:



I might have been exaggerating, but I bet he could get away with 18* of timing at 16psi, not 8*.
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Old 06-01-2009, 08:28 PM   #5
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check out my recent dyno thread. Mines not low compression, but my map is more advanced than yours and has no knock. Its an excel file
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