Will lowering the compression on a USDM GSR (10:1) to 9:1 make the drive significantly different? I just put my motor back in and it feels like it's bogging when I get on the throttle. Please help. Yes I did search.

 

i lower my compression to 9.1. as well. my car feels sluggish too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gunmetalcivic &raquo;</TD></TR><TR><TD CLASS="quote">i lower my compression to 9.1. as well. my car feels sluggish too </TD></TR></TABLE>

Think about it, doesnt it make perfect sense?!

 

yep i lowered mine from 11:1 to 9:1 and its a huuuuuuge difference...time to install my turbo now

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by c2nap &raquo;</TD></TR><TR><TD CLASS="quote">yep i lowered mine from 11:1 to 9:1 and its a huuuuuuge difference...time to install my turbo now</TD></TR></TABLE>

yup . . . lowering the compression will def. take some power away, but a power adder when taking compression away is BOOOOOOST!

 

yes you will lost power

 

Add some part throttle timing and lean out the fuel maps below -10 Hg to compensate for the lower thermal efficiency.