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Registered
Join Date: Apr 2006
Location: Ontario
Posts: 291
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Is this normal?
Okay was driving my 87 930 tonight, in 3rd gear i hit full boost and let off, and the sky lit up behind the car, so i did it again i notice that there are flames coming out the exhaust?......Should i be worried?
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07-10-2010, 08:28 PM
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Brando
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It's time for celebration when that happens. You have a cool car, yeah. Your car shoots flames man! How cool is that?
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07-10-2010, 09:29 PM
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cycling has-been
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,238
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I usually try to time a full-bore 1-2 shift while I'm going through an underpass - lights up all 4 lanes - both directions.
enjoy Bill K. It also works very well as a ricer-crotch-rocket-tailgater repellant.
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73 911T MFI, 76 912E, 77 Turbo Carrera Last edited by bkreigsr; 07-13-2010 at 10:44 AM.. |
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07-12-2010, 10:31 AM
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Registered
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 14,176
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You're a lucky man! Not everyone can do that.
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07-12-2010, 02:14 PM
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Registered
Join Date: Jul 2006
Location: Honolulu, HI
Posts: 9,835
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My freshly painted GPW bumper gets roasted all the time!
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'24 Tesla Model 3, '22 Tesla Model Y '19 Tacoma '06 Carrera, '79 930 '06 S4 Avant |
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07-12-2010, 02:45 PM
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Registered
Join Date: Jul 2008
Location: Central Washington State
Posts: 4,397
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Ok, that does it. I have yet to do a full-on boost blast and let-off at night. Seems all my driving is during the day. Gonna have to do that and keep my eyes on the rear view mirror to see if I light up the neighborhood. But not real soon, 'cause currently we're having 40mph dry winds and fires burning in the not too distant forests. Around here it's desert, but it wouldn't take too much to roast some cheat grass and start a range fire. Of course, I would claim complete innocence.
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, B&B intercooler, stock 3LDZ. |
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07-12-2010, 09:00 PM
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Crotchety Old Bastard
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Quote:
All kidding aside, if this is a new phenomenon then you should look into it. Flames are the result of excess fuel burning off in the hot exhaust system. Not really a "normal" side effect of a properly adjusted fuel system. A malfunctioning throttle bypass valve or BOV can contribute to this.
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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 |
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07-13-2010, 08:27 AM
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Max Sluiter
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CIS + boost + lift throttle =
 EFI or MFI would not so it as much but I think even if you properly adjust the CIS for 99% of driving conditions, it will still give a flame once in a while after lifting from full boost.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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07-13-2010, 10:31 AM
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hoonkraft
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
1971 Porsche 911S
