costas1 Posted February 4, 2015 Share Posted February 4, 2015 my bpu j spec making 425 whp @1.2 bar but running lean.. mods hks exhaust hks intercooler k&n air filter i hope i uploaded the grapg correct..this is a video link also Link to comment Share on other sites More sharing options...
Mk4Gaz Posted February 4, 2015 Share Posted February 4, 2015 That sounds like a very ambitious power figure to me Link to comment Share on other sites More sharing options...
costas1 Posted February 4, 2015 Author Share Posted February 4, 2015 the car is like that for the last 5 years..no issues..i always had 1.2 bar from the exhaust only..i decided to install a boost controller a few days ago and the car starts to overboost and apparently running lean..no mods no nothing..just exhaust and intercooler.. Link to comment Share on other sites More sharing options...
mellonman Posted February 4, 2015 Share Posted February 4, 2015 (edited) Running lean is not the word 14 afr at wot at full boost I see some very serious issues coming your way running that lean So I expect the dyno reading to be close as that engine must be near on exploding That afr needs to be down to around 11.5 max Edited February 4, 2015 by mellonman (see edit history) Link to comment Share on other sites More sharing options...
Mk4Gaz Posted February 4, 2015 Share Posted February 4, 2015 Didn't even bother to look at the afr plot! Yeah, I'd agree, should be nearer 11 on full boost dude. You're in danger of melting pistons! Link to comment Share on other sites More sharing options...
mellonman Posted February 4, 2015 Share Posted February 4, 2015 Just seen the video your first turbo sounds high pitched Link to comment Share on other sites More sharing options...
costas1 Posted February 4, 2015 Author Share Posted February 4, 2015 first thing i am installing a wallbro 255..but the strange thing is that the car has been like this for the last 5 years (since i bought it ) and another 6-7 i guess before that and had no issues at all..is there a chance that the dyno and the afr sensors used to be faulty? do not know...i am lost Link to comment Share on other sites More sharing options...
costas1 Posted February 4, 2015 Author Share Posted February 4, 2015 what do you mean high pitched? pls explain cause i did not get it..lol Link to comment Share on other sites More sharing options...
mellonman Posted February 4, 2015 Share Posted February 4, 2015 The enitial whistle of the first turbo just seems high pitched more of a sharper whistle then I remember, could be the camera though Link to comment Share on other sites More sharing options...
costas1 Posted February 4, 2015 Author Share Posted February 4, 2015 can not be 100% sure but the car sounds normal all these years..maybe its my phones camera Link to comment Share on other sites More sharing options...
downimpact Posted February 18, 2015 Share Posted February 18, 2015 what FCD have you got, I guess HKS? Link to comment Share on other sites More sharing options...
TuneR Posted February 19, 2015 Share Posted February 19, 2015 Do you have a restrictor ring or a cat left in the exhaust? Boost controller may not be hooked up properly if over boosting i guess but not sure that would give the leaning issue. Link to comment Share on other sites More sharing options...
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