hybrid_eg Posted October 3, 2011 Share Posted October 3, 2011 I wanted to get some opinions from those who had experience with these units.. basically i'm running a pair of newly rebuilt RR581's, on a fresh built R33 motor with all basic upgrades.. downpipe,injectors, fmic, filter, z32 mafs, tomei dumps, cams, and slightly higher compression, however not by much only by a point or so.. Since we only have 91 octane here car will be tuned to max on pump gas and leave room to turn up boost higher with race gas.. any ideas what I may expect?? ball park? Many tks for comments in advance!! btw, it will be tuned on power FC with datalogit.. Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/ Share on other sites More sharing options...
R31Nismoid Posted October 3, 2011 Share Posted October 3, 2011 Same as everyone else really - a laggy 450-500rwhp. Will be boost/tune dependant based upon tuner decision etc. Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6042221 Share on other sites More sharing options...
GTR_JOEY Posted October 3, 2011 Share Posted October 3, 2011 yep will be a bit laggy but will come on pretty hard and feel quick 91 octane fuel is goin to be ur biggest power killer Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6042231 Share on other sites More sharing options...
hybrid_eg Posted October 3, 2011 Author Share Posted October 3, 2011 tks Gents! Why do you say laggy? They seem like rather small twins.. slightly bigger than stock.. I'm sure it cant be laggier than a single set up? 91 will definitely be the biggest problem so we shall see what kind of numbers it turns up.. the set up is an S13 chassis with a freshly rebuilt rb25 trans.. Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6043495 Share on other sites More sharing options...
R31Nismoid Posted October 3, 2011 Share Posted October 3, 2011 They are laggy because they are a design from the 1980's. Their wheel combination isn't great at all compared to a new gen turbo like a Garrett -5 Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6043509 Share on other sites More sharing options...
smithy85 Posted October 3, 2011 Share Posted October 3, 2011 Yeah, running 91 I would say about 400/450whp max, but as has been said, you won't see much power under 4500 at absolute best. Lag machines. GTR_JOEY can confirm this lol, been there done that. Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6043512 Share on other sites More sharing options...
R31Nismoid Posted October 3, 2011 Share Posted October 3, 2011 Fuel isn't a major issue. OP is US, fuel is measured differently. Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6043520 Share on other sites More sharing options...
GTR_JOEY Posted October 3, 2011 Share Posted October 3, 2011 Haha still alot of fun though! Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6043571 Share on other sites More sharing options...
smithy85 Posted October 4, 2011 Share Posted October 4, 2011 Fuel isn't a major issue. OP is US, fuel is measured differently. US 91 = 95 RON in Aus It's not 98 but still tuneable for good power levels Link to comment https://www.sau.com.au/forums/topic/378951-whp-expectations-rr581-set-up/#findComment-6043981 Share on other sites More sharing options...
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