joh21m Posted October 28, 2004 Share Posted October 28, 2004 I just had an fmic installed and when i give it full throttle it will start to pop after about 5000rpm. Wat could be causing it to do this? Is it a bad thing? My mods are as follows: RB20DET Turbo back 3" Exhaust FMIC POD 13psi (No boost controller...what the?) Joh Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/ Share on other sites More sharing options...
SeriesIIGTST Posted October 28, 2004 Share Posted October 28, 2004 No doubt it's coils/plugs breaking down. Make sure you've gapped your plugs down to at least 0.8mm rather than 1.1mm. Other than that, do a search on the numerous threads about coil pack breakdowns. Hope that helps Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1070901 Share on other sites More sharing options...
joh21m Posted October 29, 2004 Author Share Posted October 29, 2004 is it bad to drive around like this? Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1071815 Share on other sites More sharing options...
Tigger Posted October 29, 2004 Share Posted October 29, 2004 doesnt sound too healthy to me... btw, should you be getting a fresh dyno tune after a fmic install? assuming you have a safc or powerfc Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1071916 Share on other sites More sharing options...
iBd14U Posted October 29, 2004 Share Posted October 29, 2004 Hey! Is it backfire? You'll normally get alot of backfire when you have an after market exhaust. This is normal especially if you run boost. Happens after the fmic was installed as there is more pressure built up n released through the exhaust. Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1072053 Share on other sites More sharing options...
Kaido_RR Posted October 29, 2004 Share Posted October 29, 2004 could be Plugs, Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1072058 Share on other sites More sharing options...
joh21m Posted October 29, 2004 Author Share Posted October 29, 2004 Hey!Is it backfire? You'll normally get alot of backfire when you have an after market exhaust. This is normal especially if you run boost. Happens after the fmic was installed as there is more pressure built up n released through the exhaust. nah its not backfiring its more like popping/stutter, i did a search and it seems its either the plugs or the coil packs, does anyone kno if the ngk plugs bcpr6es are already gapped to 0.8mm? Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1072162 Share on other sites More sharing options...
Sithis Posted November 7, 2004 Share Posted November 7, 2004 The same thing hapened to me when i did the same mods to my 33 what it turned out to be was the ignition timing needed to be turned up... Just a thought. Scott Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1080474 Share on other sites More sharing options...
Advan_01 Posted November 8, 2004 Share Posted November 8, 2004 Its misfiring. Just gap you plugs to at least 0.8mm will solve the problem. Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1080928 Share on other sites More sharing options...
joh21m Posted November 8, 2004 Author Share Posted November 8, 2004 i've changed the plugs to bcpr6es (0.8mm) and so far so good, havent given it a decent hit yet just waiting for fuel pump, but it seems to have disappeared... Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1080933 Share on other sites More sharing options...
thizzle Posted November 8, 2004 Share Posted November 8, 2004 check your coils Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1081018 Share on other sites More sharing options...
joh21m Posted November 8, 2004 Author Share Posted November 8, 2004 checked em, they all look fine Link to comment https://www.sau.com.au/forums/topic/54778-popping-from-exhaust-at-wot/#findComment-1081102 Share on other sites More sharing options...
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