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1986 930's Avatar
 
Join Date: May 2011
Location: Cape Canaveral Florida
Posts: 289
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Changing Exhaust

So I put a B&B exhaust on the little beast a year ago when I upgraded to the K-27 HFS and B&B Headers and I have to say it has a very anoying harmonic at 80mph. More anoying than a 7 year old asking if we are there yet every 5 minutes on a long drive! Given that, I am thinking about going back to my 4 pipe RUF Exhaust I took off of it. Not quite the throughput but a little sweeter, less angry sound.

So my question is will changing the exhaust require tuning the fuel injection again. I kind of figured that it wouldn't but it never hurts to ask.

Thanks,

Mark

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Mark

1986 930 Ultra-Smith RUF Slant Nose conversion, RUF VB, K-27 HF-S, B&B Headers and Exhaust, RUF Short Shifter, RUF Interior
Old 10-31-2013, 04:26 PM
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Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,150
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Probably not. At most you may need to tweak the mixture screw. Only your AFR meter knows for sure.
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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 11-01-2013, 04:06 AM
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I've gone native
 
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Join Date: Sep 2011
Location: Long Island, NY
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Agree. The RUF is a great exhaust.

Old 11-01-2013, 06:51 AM
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