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Large Member
krasuskyp's Avatar
Join Date: Nov 2001
Location: top of 3rd
Posts: 4,138
Thanks Brian. Will do! You def. nailed the sound. When I picture a badarse sound 930 - this is what is in me head. My buddy rip'd it up the road for me. I was giggling like a schoolgirl.

I came through a backroad tunnel yest. in 2nd and gun'd it, then decel'd up the road @ ~ 45... and note house on right has not one not two but THREE STATIES *standing* on the guy's front porch - D'OH! I go by poppity popopopopopopopop, cringing. Few miles from me house to boot, and the barracks is just up the road - yeah they've got my number fersure - HA!

Les, I am seeing the higher boost under full load, and note it spikes to 1.02 at times for a millisecond RIGHT when I lift. Thanks.
Paul... CT | '87 930 | '07 //S6 v10 JNR | '98 ///M3 vert |

| '01 ///M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 //S8 | '95 //S6 6gang | '88 ///M5 | '87 190E 2.3-16 |
Old 06-25-2008, 11:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
Crotchety Old Bastard
RarlyL8's Avatar
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,524
Boost spikes after a sudden throttle lift is indicative of the boost sensor being located above the throttle plate and a result of a faulty or slow BOV.
If so these spikes are not being seen by the engine but can cause problems with seals and also hits from the overboost switch.

You can stop the pop pop pop instantly by simply pushing in the clutch. Excessive popping is also an indicator of a bad BOV.
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; 06-25-2008 at 01:56 PM..
Old 06-25-2008, 01:53 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)

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