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09-18-2009, 07:48 AM
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#1 (permalink) |
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Registered User
Join Date: Sep 2009
Posts: 3
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Elise BWR backfire
I just bought an 05 with a BWR supercharger. I know nothing about the history of this car. It is backfiring just after shifts. Could the timing be off? Also, is there any way to find out if the ECU was tuned for the supercharger? I am new to Lotus and would appreciate any advice.
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09-18-2009, 07:54 AM
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#2 (permalink) |
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Registered User
Join Date: Apr 2007
Location: Bay Area, CA
Posts: 357
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Does it have a test pipe? If it does and your talking about high rpm shifts then they tend to do that. If you have a cat on the car then something is probably wrong. If you didnt have it tuned for a sc it would be toast by now.
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05 GG Elise-BWR S/C-Nitrons-Intake-Exhaust-Test Pipe-Cf Scoops-Cf Lip-Cf Diffuser-Piaa Wheels-And all the little stuff 
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09-18-2009, 08:21 AM
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#3 (permalink) |
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User, Registered
Join Date: Sep 2005
Location: Leesburg, VA
Posts: 1,833
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Francis 2006 Chrome Orange Elise: LSD/TC, Nitron SAs with 425/650 springs, BWR 7/8" Front Bar, Eliseparts bumpsteer kit, VF Stage 2, 2bular Header + Sport Cat + 8x24 GT3 Muffler, ECU Tune by Jermaine, Smaay's fuel rail, ACT XT clutch, Saikou Michi dual catch can, Moroso pan, Manly's mount inserts & FF Engine Damper 2000 Black Integra Type R: - 213,000 miles...running again! |
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09-18-2009, 08:33 AM
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#5 (permalink) |
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User, Registered
Join Date: Sep 2005
Location: Leesburg, VA
Posts: 1,833
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__________________
Francis 2006 Chrome Orange Elise: LSD/TC, Nitron SAs with 425/650 springs, BWR 7/8" Front Bar, Eliseparts bumpsteer kit, VF Stage 2, 2bular Header + Sport Cat + 8x24 GT3 Muffler, ECU Tune by Jermaine, Smaay's fuel rail, ACT XT clutch, Saikou Michi dual catch can, Moroso pan, Manly's mount inserts & FF Engine Damper 2000 Black Integra Type R: - 213,000 miles...running again! |
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09-18-2009, 08:43 AM
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#6 (permalink) |
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NOT ßANNED!
Join Date: Aug 2008
Location: Colorado
Posts: 1,546
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PES tune has been shown to go rich over time as well.
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2005 Saffron Yellow Elise, Katana Supercharger, LSS Wheels, 2Bular exhaust & cat, rear panel delete, Cup Airbox, Volt / Oil temp gauge, Ohlins double adjustable coilovers, Dual Oil Coolers, S111 RTD Brace, Moroso Oil Pan, MicroMirror, S111 "V-Force" Harness bar, Manly Engine Mounts, Odyssey PC680 & RLS Bracket, Saikou Michi OCC, CF Scoops, CF Bootlid, CF Front Lip. 
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09-18-2009, 09:11 AM
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#7 (permalink) |
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Serial Thrilla
Join Date: Jun 2006
Posts: 236
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I have a BWR and a decat pipe. Also backfires, but only when down shifting.
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05' Elise - BWR supercharger, Quaife LSD, Nitron Race Triple Adjustable, LETSLA, Larini Decat, Larini Exhuast, ACT HDSS, Fidanza flywheel, V2 Fuel Tank, V2 Steering Arms, BWR sway bar, desnorkled, ForcedFed CF splitter, Manly's engine mounts, S111 harness bar, Schroth harness w/ S111 seat grommets, Oil Drain Valve, Painted Black Diffuser, Braille battery, Custom Battery Switch 05' Corvette - Z51 Convertible - 630hp 6.6L [DON'T YOU JUDGE ME!!!] (SOLD!) |
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09-18-2009, 09:49 AM
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#8 (permalink) |
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NOT ßANNED!
Join Date: Aug 2008
Location: Colorado
Posts: 1,546
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Note the rich A/F ratio of the PES vs the CharlieX. Back to back runs, same car.
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2005 Saffron Yellow Elise, Katana Supercharger, LSS Wheels, 2Bular exhaust & cat, rear panel delete, Cup Airbox, Volt / Oil temp gauge, Ohlins double adjustable coilovers, Dual Oil Coolers, S111 RTD Brace, Moroso Oil Pan, MicroMirror, S111 "V-Force" Harness bar, Manly Engine Mounts, Odyssey PC680 & RLS Bracket, Saikou Michi OCC, CF Scoops, CF Bootlid, CF Front Lip.
Last edited by Demonized : 09-18-2009 at 10:56 AM. |
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09-18-2009, 09:53 AM
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#9 (permalink) |
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OSX Black hat
Join Date: Feb 2005
Location: Las Vegas , NV
Posts: 9,935
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backfiring on shifting with a decat, just usually means the DFCO (basically a fuel dump) is in effect, you just get to hear it better with the decat.
if its doing it all the time, it might be rich.
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Black Exige S - http://goth.am 265 Mule / Elan M100.ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 West Coast Lotus Meet - Las Vegas - November 6-9 2009 http://www.westcoastlotus.com/ |
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09-18-2009, 12:43 PM
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#11 (permalink) | |
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Third Eye Open
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Quote:
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GO: Vision Function Stage II Intercooled Bliss with Charlie's ECU magic and Ronin's Tenacity! STOP: DBA 4000's, Porterfield R4! TURN: Nitron S/A's Toyo RA1's 225/245 on Rota's! |
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