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Does compression ratio affect base tunes?
Posted: Tue Aug 09, 2005 3:41 pm
by Mr Plow
Does the compression ratio affect base calibrations? If it does, what would be necessary to change to make the base tune work. Example: 8.5:1 using a revhard55010psi base tune.
Posted: Tue Aug 09, 2005 4:02 pm
by WPB EP3
Yes, lower compression is a direct influence on the response to the base calibration. Not to say you could'nt start with that basemap in your example, in fact I think you would be safer if anything. I imagine your timing would be off intially, but I dont know 100%
hope this helps,
Evan
Posted: Tue Aug 09, 2005 5:29 pm
by Mr Plow
If the timing was off, would I advance or retard it?
Posted: Thu Aug 11, 2005 3:20 am
by CivicVTi
The lower the compression, the more timing advance you need.
Posted: Thu Aug 11, 2005 2:28 pm
by Mr Plow
thank you very much. If I had a base tune and it was done on say 9.8:1, should I advance it like 2 or 3 degrees across the board for it to work better with my setup? So if it said 16 to start with I'd put in 18 or 19, etc? Just wanna make sure, thats all.