kevmcc90 Posted September 7, 2015 Share Posted September 7, 2015 On start up seems to be black soot splutters out of exhaust, only noticed it when I came back from a drive and it was splattered up the back of the car? Any ideas? It doesn't sound good to me though.. Quote Link to post Share on other sites
StuDoc 72 Posted September 7, 2015 Share Posted September 7, 2015 Overfueling Quote Link to post Share on other sites
funny onion Posted September 7, 2015 Share Posted September 7, 2015 Does it smoke? on boost? did you hit fuel cut at all? I wouldn't panic, chances are it's just unsettled some shite in the exhaust or as above, overfueling My advance is mapped pretty rich on boost and i get a nice little sooty patch on my rear bumper if i've been kicking it about. Quote Link to post Share on other sites
Ollieh17 Posted September 7, 2015 Share Posted September 7, 2015 Car cold or warm when it does this? Quote Link to post Share on other sites
kevmcc90 Posted September 7, 2015 Author Share Posted September 7, 2015 Cold, doesn't smoke on boost. Could be over fuelling. Car is running jam Ecu on ct9. Would I be best fitting adjustable fpr and getting fueling checked by a tuner? Quote Link to post Share on other sites
funny onion Posted September 7, 2015 Share Posted September 7, 2015 Get a wideband afr fitted if you can to check afr's especially on boost. the plug and play ecu's do up the fueling by quite a bit. Or as you say get a rrfpr and get it set up on a rolling road if you can afford. That's your best option i'd say. better to be safe than sorry. Quote Link to post Share on other sites
kevmcc90 Posted September 7, 2015 Author Share Posted September 7, 2015 Get a wideband afr fitted if you can to check afr's especially on boost. the plug and play ecu's do up the fueling by quite a bit. Or as you say get a rrfpr and get it set up on a rolling road if you can afford. That's your best option i'd say. better to be safe than sorry. Yeah will look into that. Got fpr sitting waiting to be fitted just need to figure out how to fit Haha. Thanks Quote Link to post Share on other sites
Ollieh17 Posted September 7, 2015 Share Posted September 7, 2015 Condensation in the exhaust picks up soot and leaves a mark. Next door neighbour had a white car and i had a side exit had to park the other way. Its pretty normal when cold Quote Link to post Share on other sites
Broony Posted September 7, 2015 Share Posted September 7, 2015 Yeah if you have an aftermarket exhaust my nurspec used to leave the pavement black on start up on cold mornings due to condesation Quote Link to post Share on other sites
kevmcc90 Posted September 7, 2015 Author Share Posted September 7, 2015 That settles my mind down a bit, but maybe best still to get my fueling checked out Quote Link to post Share on other sites
mi16chris Posted September 7, 2015 Share Posted September 7, 2015 It's normal on cold start if u have a decat Quote Link to post Share on other sites
Stu Posted September 10, 2015 Share Posted September 10, 2015 Cold start/warm up enrichment does increase the AFR while the engine is warming up, and condensation is normal especially if its cold. I wouldn't worry about it unless you have bad running/idle issues. Quote Link to post Share on other sites
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