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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,563
The catalytic converter did not appear until '86 in the US. The exhaust system for the 965 is very different than that of the 930. Both benefit greatly by replacing the entire cat/muffler assembly with a free flowing muffler.
The '78/9 will also benefit greatly by replacing the stock muffler with a straight-thru free flowing muffler. Baffled or chambered mufflers are not the best for a turbocharged application as the turbo requires an unimpeded exit with the least amount of back pressure.
If your present muffler is baffled or chambered you will see gains with one that is straight-thru. Our host carries at least one brand of straight-thru stock exit 930 muffler.
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8

Last edited by RarlyL8; 01-30-2010 at 07:51 AM..
Old 01-30-2010, 07:49 AM
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