View Single Post
RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
RarlyL8's Avatar
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,550
Great info on the graphs.
Unwired Tools suggested that AFR curve? That system is supposed to be for performance, that is not a performance curve.
The power curve appears typical for your modifications although 3600rpm full boost is late for a 7200 with headers.
I, as others, would suggest you first adjust your AFRs to an aggressive curve. Once that is dialed in we can make suggestions that would pull the threshold down. Better headers and an S turbo alone should lower your threshold 500rpm based on the present curve.
Changing transmissions or gearing is a drastic measure that I would not consider until the engine is optimized. As you add power and lower threshold your engine will grow into the stock gearing.
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
Old 04-25-2010, 07:06 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #36 (permalink)