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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
You already have an aftermarket muffler and K27. The question was can you benefit from adding headers (over the stock heat exchangers).
The direct answer is yes.
Bang for the buck is a different issue. The stock (free) exchangers are adequate but not optimal.
A good intercooler will run $2000. This will allow you to safely raise the boost level to 1.0bar for an increase of ~25hp at the most.
Headers cost about the same and will increase power about the same with zero added load on the engine. Well designed headers will greatly enhance driveability and throttle response and have no over-boost issues. I'm not a fan of the shorty headers for a street car, that is a simple cheap design with no tuning considerations and lousy heat. Street cars spend very little time on boost so it stands to reason that optimizing off-boost torque should at least be a consideration if not the focus.
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; 10-30-2009 at 10:00 AM..
Old 10-30-2009, 09:58 AM
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