Supra N_A Posted January 12, 2012 Share Posted January 12, 2012 sorry hit the search and couldnt find what i was looking for so here it goes what bpu parts are needed?? 2 decats bigger fuel pump uprated spark plugs boost restrictor ring fcd optional: fmic is that it yea? Quote Link to comment Share on other sites More sharing options...
Graham1984 Posted January 12, 2012 Share Posted January 12, 2012 Cue the search jokes Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted January 12, 2012 Share Posted January 12, 2012 For a J spec that's right. If you click your own post where you've written BPU it'll take you to the page you're looking for Quote Link to comment Share on other sites More sharing options...
Supra N_A Posted January 12, 2012 Author Share Posted January 12, 2012 For a J spec that's right. If you click your own post where you've written BPU it'll take you to the page you're looking for ahhhhhhh i have actually never clicked on them when they have been highlighted hahaha... cheers Quote Link to comment Share on other sites More sharing options...
marc_p Posted January 12, 2012 Share Posted January 12, 2012 Also, you missed the boost controller Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted January 12, 2012 Share Posted January 12, 2012 Also, you missed the boost controller You don't need a boost controller with a J spec. Quote Link to comment Share on other sites More sharing options...
marc_p Posted January 12, 2012 Share Posted January 12, 2012 You don't need a boost controller with a J spec. I think it's a safer route to go down to be honest to get a 1.0 bar rr and use a controller to raise it rather than risk it over boosting on a 1.2 rr. Quote Link to comment Share on other sites More sharing options...
tkddav3 Posted January 12, 2012 Share Posted January 12, 2012 this might sound daft but going by your forum name a gte lump might be handy too Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted January 12, 2012 Share Posted January 12, 2012 I think it's a safer route to go down to be hoest to get a 1.0 bar rr and use a controller to raise it rather than risk it over boosting. It isn't an essential part though, a RR will do the job fine if it's a good one... the reason I say it is because a boost controller adds another couple of hundred quid on top of the cost of BPU, and that's quite a significant percentage more on top. Quote Link to comment Share on other sites More sharing options...
Littler Posted January 12, 2012 Share Posted January 12, 2012 By having the 1.2 bar RR and not a 1 bar RR with a boost controller raising the boost also means less stress on the turbo's! Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted January 12, 2012 Share Posted January 12, 2012 By having the 1.2 bar RR and not a 1 bar RR with a boost controller raising the boost also means less stress on the turbo's! I am going to run my BPU to 1.25-1.3bar, I want to extract every single BHP ! Quote Link to comment Share on other sites More sharing options...
Littler Posted January 12, 2012 Share Posted January 12, 2012 I am going to run my BPU to 1.25-1.3bar, I want to extract every single BHP ! Are you going to be using hybrid turbo's? I am looking forward to seeing yours when it's done! Mine will hopefully be BPU for dragonball Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted January 12, 2012 Share Posted January 12, 2012 No, just low mileage Jspecs Quote Link to comment Share on other sites More sharing options...
Littler Posted January 12, 2012 Share Posted January 12, 2012 No, just low mileage Jspecs That engine will be running really well with low mileage turbo's on! Your definitely after every horse power possible! Quote Link to comment Share on other sites More sharing options...
TuneR Posted January 13, 2012 Share Posted January 13, 2012 Just curious if you build it up bit by bit is this alright or should you do it all at once? I have a 3" 2nd decat, will then get exhaust, then FCD, sparks, 1st decat and restrictor and finally the fuel pump.... Will it cause the engine to run badly (too rich)? Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 13, 2012 Share Posted January 13, 2012 By having the 1.2 bar RR and not a 1 bar RR with a boost controller raising the boost also means less stress on the turbo's! Care to explain how ? Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 13, 2012 Share Posted January 13, 2012 I dont have this RR issue as my cars a uk but if i had a jap i'd much rather have a lower RR bar and then have the adjustabilty a boost controller gives you. If your on the limit with the restrictor ring what happens on cold damp mornings, surely you'll be overboosting and on j spec tubbies thats not good is it Quote Link to comment Share on other sites More sharing options...
Littler Posted January 13, 2012 Share Posted January 13, 2012 Care to explain how ? When there is a 1 bar restrictor ring in place to get it up to 1.2 the boost controller will increase the boost by the turbo's working harder as there is more restriction. With less restriction the turbo's will not work as hard to achieve the boost, therefore temps are lower and the life of the turbo's are prelonged. This is only my thinking behind it not supported by fact really. But I do agree with you on the overboosting as if your producing 1.2 bar straight away then on cold days the only way is up for the boost. Just my thoughts could be completely wrong Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 13, 2012 Share Posted January 13, 2012 When there is a 1 bar restrictor ring in place to get it up to 1.2 the boost controller will increase the boost by the turbo's working harder as there is more restriction. With less restriction the turbo's will not work as hard to achieve the boost, therefore temps are lower and the life of the turbo's are prelonged. This is only my thinking behind it not supported by fact really. But I do agree with you on the overboosting as if your producing 1.2 bar straight away then on cold days the only way is up for the boost. Just my thoughts could be completely wrong If its got a 1 bar restrictor ring how does it get to 1.2 bar ? The turbos whether its done via a restrictor ring or boost controller if at the same bar then the stress is the same on the turbos Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.