ZT-R Posted April 29, 2012 Share Posted April 29, 2012 Hey guys I'm looking at upgrading my turbos so I can run some more boost (damn ceramic wheels). I am wanting 500-550rwhp. Looks like the 2860-9 (GT-SS) turbos would do that. I dont know if i want to stay with the twins or not though. I think the power deliver of the twins would be better for traction in a rwd S30 though. Seems like most the plots on the single turbos are on and off. I was thinking about going with the new borg warner EFR like the 7670 but I am waiting for some dynos to pop up. I must say it seems like the stock turbos take awhile to spool up, but then again i have a 3.69 rear and 3" intercooler piping and a big ass fmic. I have so many plots from the skyline forms but thats awd stuff and most are stroked. I want to see ACTUAL RWD plots. Thanks. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted April 30, 2012 Share Posted April 30, 2012 Soon as I finally put mine on a dyno for the first time, I can show you what the twin GT25/40's do. In my opinion, I have very little noticeable lag. My biggest gripe is not having a pair of W/G pipes put on my exh. manifolds while being built, so I could run a external W/G set up. Quote Link to comment Share on other sites More sharing options...
markrolston@mac.com Posted May 4, 2012 Share Posted May 4, 2012 655hp on c16, 505hp on pump gas. -street tune with 435hp, 378ft-lb torque -pump gas race tune with 505hp, 381ft-lb torque -c16 race tune with 510hp, 382ft-lb torque -c16 race tune with 24lb boost, 655hp, 493ft-lb torque http://www.rolston.me/NewSite/Z-Blog/Entries/2011/5/16_New_Tune.html Quote Link to comment Share on other sites More sharing options...
ZT-R Posted May 4, 2012 Author Share Posted May 4, 2012 Is that 5k for the torque mark? Quote Link to comment Share on other sites More sharing options...
markrolston@mac.com Posted May 5, 2012 Share Posted May 5, 2012 Is that 5k for the torque mark? your question is not entirely clear, but I'm assuming you're wanting to know where the torque peaks: The chart starts at 2.25 and goes to 8k rpm. So the torque is peaking at about 6250 rpm. We cut off the run at 7500rpm. Quote Link to comment Share on other sites More sharing options...
ZT-R Posted May 21, 2012 Author Share Posted May 21, 2012 How about some -5 and -7 numbers guys... Quote Link to comment Share on other sites More sharing options...
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