AlexJames Posted February 5, 2008 Share Posted February 5, 2008 .... ok, some advice needed here lads I've just been reading some of the threads about blowing turbos which has got me a little concerned. My RZ is running standard turbos with both cats still in. A boost controller which I can change the output from 0.8 bar to 1.1 bar when ever I like, and a HKS Priest exhaust. By my guess work I should be nearing 340bhp? I have just brought a FMIC, and a downpipe that gets rid of the 1st cat (closest to engine) but leaves the 2nd one(closest to back box) in... will this cause undue stress for the turbos? hhheeelllpppp... Quote Link to comment Share on other sites More sharing options...
Ric Posted February 5, 2008 Share Posted February 5, 2008 you shouldnt "really" run higher than stock boost with both cats installed due to the resistance causing High exhaust gas temp's (EGT's) which can be damaging to the turbo. please sombody correct me if im incorrect First decat is a little better for 1bar sort of area but a 1.2 increase should have both cats removed Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 Cheers Ric, can I clarify a little there? I SHOULD run higher than stock boost with both cats INSTALLED? does that not mean that they made the stock car wrong in the first place if it demages the turbos? lol (maybe im just being simple Quote Link to comment Share on other sites More sharing options...
Ric Posted February 5, 2008 Share Posted February 5, 2008 i said shouldnt lol. Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 (maybe im just being simple hehe... you answered my last question Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 righty, so I really need to get rid the middle cat (where can I get a cheap decat from?) I guess if I installed the FMIC and the downpipe that would get rid of some of the EGT's? Whats the stock turbo output? Quote Link to comment Share on other sites More sharing options...
Ric Posted February 5, 2008 Share Posted February 5, 2008 righty, so I really need to get rid the middle cat (where can I get a cheap decat from?) I guess if I installed the FMIC and the downpipe that would get rid of some of the EGT's? Whats the stock turbo output? The stock turbo's output is 0.8 bar the EGT is only seen at the hotside of the turbo, its the intake temps which the intercooler cools, so thats not the same Decats can be purchased from most traders on here, whiftbitz, envy ETC Please wait for sombody elses input though as i could be incorrect about some things Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 the EGT is only seen at the hotside of the turbo, its the intake temps which the intercooler cools, so thats not the same Yeah sorry I wasnt clear on that, heh, I understand what an intercooler does etc... just I didn't know if the added bhp increase from addin the FMIC would increas the restricted heat... heh thanks for your help though! appreciated !:) Quote Link to comment Share on other sites More sharing options...
heckler Posted February 5, 2008 Share Posted February 5, 2008 basically, more boost you run, higher the EGT's. a single decat shouldnt effect it that much, but by removing one of the cats the boost will rise anyway as part of the restriction has been removed. On stock turbos i belive the MAX boost you should run is 1.2 regardless if you have cats or not. Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 humm, that does re-assure me as the boost controller, I imagine wont let it run higher than 1.1 so it 'shouldn't' kill it Quote Link to comment Share on other sites More sharing options...
Burna Posted February 5, 2008 Share Posted February 5, 2008 Just checking, but have you changed your fuel pump? Quote Link to comment Share on other sites More sharing options...
heckler Posted February 5, 2008 Share Posted February 5, 2008 humm, that does re-assure me as the boost controller, I imagine wont let it run higher than 1.1 so it 'shouldn't' kill it It shouldn't do - keep an eye on to check... Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 Just checking, but have you changed your fuel pump? Now that I havent done yet, does it NEED to be done with 1 cat still in? I havent got the fuel cut defencer yet either... Quote Link to comment Share on other sites More sharing options...
Conrad Posted February 5, 2008 Share Posted February 5, 2008 I don't know exactly what you can get away with but to be honest you should be doing BPU properly - ie uprated fuel pump, colder spark plugs and as already mentioned remove the cats to lower EGT's. It's a lot cheaper to do these things in the first place than to replace blown turbos at a later date instead. Besides, do all the above and get an exhaust and you're looking at 400bhp! with the FMIC Quote Link to comment Share on other sites More sharing options...
AlexJames Posted February 5, 2008 Author Share Posted February 5, 2008 Brill, thats great advice, cheers guys! I shall see what I can do, whats a good fuel pump to get then? I have seen a few new products on ebay from performance shops on there.. is there a certain sort I should get? Quote Link to comment Share on other sites More sharing options...
2JG Posted February 5, 2008 Share Posted February 5, 2008 most people running BPU will use a Walbro fuel pump, any of the traders here can get them at a good price. Quote Link to comment Share on other sites More sharing options...
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