black_widow87 Posted October 29, 2009 Share Posted October 29, 2009 Hi everyone, Still having an overboost problem after fitting my CW restrictor ring. For some strange reason im hitting 1.4-1.5 bar! [sAD][/sAD] However, i had a little browse round the exhuast system 2 see if i find the problem. I noticed that my HKS super dragger was missing some filiment inside the back box!!! could this be by any chance be the problem as there is less restriction in the exhuast ???????? Thats the only thing i can think of guys as my knowledge on this kind of stuff is pretty vague CHEERS GUYS!!!!!! Quote Link to comment Share on other sites More sharing options...
trinitom Posted October 29, 2009 Share Posted October 29, 2009 it could be, try a smaller RR and it should solve your problem. Quote Link to comment Share on other sites More sharing options...
tony tt Posted October 29, 2009 Share Posted October 29, 2009 I dont think the lack of filiment in the rear box should affect it mate to be honest its too far back to cause any real back pressure what size or rr did you get? Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted October 29, 2009 Share Posted October 29, 2009 Are you in TTC by any chance (i.e. both turbos come online together)? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 Ah right. that makes sense! Its 1bar ring mate, do you think it may have something to do with the plumbing of the wastegate!!! Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 No, dnt think im running ttc mate. Anyway i can find out? Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted October 29, 2009 Share Posted October 29, 2009 No, dnt think im running ttc mate. Anyway i can find out? Do you feel the first turbo spooling from just before 2k rpm, then a both at around 4k? Or is all the action at around 3.5k rpm? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 Yeah, it starts spooling at about 2k rpm to around 0.7bar then at around 4k it goes bezerk!!!!! Massive change in power and noise. Im guessing its not runing TTC. Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted October 29, 2009 Share Posted October 29, 2009 Doesn't sound like it mate. Quote Link to comment Share on other sites More sharing options...
trinitom Posted October 29, 2009 Share Posted October 29, 2009 (edited) what hole size RR you have? on mine with 3" exhaust pipe and 56mm (1.2 bar RR) i was getting 1.3/1.4 bar. changed to 52mm RR and now goes to 1.1 bar on cold days, never more than that! Edited October 29, 2009 by trinitom (see edit history) Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted October 29, 2009 Share Posted October 29, 2009 The only way to sory it properly is to put the cat back in. a restrictor ring is a very crude method to restrict exhaust gas flow if you really think about it. I put the first cat back in my car and it sits perfectly at 1-1.1bar Quote Link to comment Share on other sites More sharing options...
tony tt Posted October 29, 2009 Share Posted October 29, 2009 The only way to sory it properly is to put the cat back in. a restrictor ring is a very crude method to restrict exhaust gas flow if you really think about it. I put the first cat back in my car and it sits perfectly at 1-1.1bar With increased tempratures though and added pressure at 1.1bar will this not shorten the life of your turbos? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 Its a 1.1bar ring, with a 3.5" HKS Super dragger exhaust. The 1st cat stilll seems to be on the car...is this anything to do with the problem???? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 Could it be that the ECU will have to adjust itself due to the restriction change???? Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 29, 2009 Share Posted October 29, 2009 (edited) The numbers attached to RR's are only a rough guide, their impact on every car is different. Either get a smaller ring or put a cat back in, then see what boost you get and take it from there. Just read one of you posts again. Are you sure the first cat actually still contains the catalytic converter, it may have been knocked out by a previous owner. Edited October 29, 2009 by Terminator (see edit history) Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted October 29, 2009 Share Posted October 29, 2009 With increased tempratures though and added pressure at 1.1bar will this not shorten the life of your turbos? agreed it will increase temps, but not to a limit that would be considered detrimental to running. The pressure is no different to having a RR in there its essentially doing the same thing Its a 1.1bar ring, with a 3.5" HKS Super dragger exhaust. The 1st cat stilll seems to be on the car...is this anything to do with the problem???? You shouldn't have any issues with a cat and a RR on the car? Im confused? Do you have a boost controller installed? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 Well from what i can see the 1st cat is still attatched however it couldwell of ben knocked out! How will i go about finding out if it has? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 no boost controller is installed ar the moment. had a manual one fitted a few weeks back but for some reason i couldn't get it to work properly so took it off! For some reason it was restricting th boost to 0.2 bar. Only recently discovered i needed a rr to bring the boost down. Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 0.2bar on the 2nd turbo that is! Quote Link to comment Share on other sites More sharing options...
Miguel Posted October 29, 2009 Share Posted October 29, 2009 no boost controller is installed ar the moment. had a manual one fitted a few weeks back but for some reason i couldn't get it to work properly so took it off! Are you sure you refitted the pipework correctly when you took the BC off? Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 29, 2009 Author Share Posted October 29, 2009 i was having the overboost problem before i fitted the BC, just thought it would calm the boost down abit. As far as i know i fitted it bk properly, as the car is running how it was before i fitted it. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted October 29, 2009 Share Posted October 29, 2009 This might be uber stupid, but is your wastgate opening? Quote Link to comment Share on other sites More sharing options...
stupra Posted October 29, 2009 Share Posted October 29, 2009 If I were you I'd try a 1 bar ring, then set the boost controller to 1.2 bar. It's easier to up the boost with a controller than to lower it with one. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 29, 2009 Share Posted October 29, 2009 If the electronic controller only allowed .2 bar then something is / was plumbed up wrongly. You need to be CERTAIN all the solenoid piping is on the correct things, unsplit, tight and perfect. Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted October 30, 2009 Author Share Posted October 30, 2009 This might be uber stupid, but is your wastgate opening? I havnt got a clue mate? How would i go about checking? will i have to remove the wastegate completely from the car? Quote Link to comment Share on other sites More sharing options...
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