Quote:
Originally Posted by TitaniumTT
An properly sized single with a good (re:LARGE) exhaust will out perform the sequentials in terms of TORQUE response, not boost response.... I wish I had access to my old dyno charts, the torque comes up faster and lasts longer with my single (Turblown GT35R Stg V with a billet wheel, 1.0 a/r exhaust) but I also fabricated an equal length extremely short runner Mani with dual TiAL MVS gates and a 4" exhaust that splits into two three inch sections back to the bumpers. If you want boost response, nothing is going to equal what is basically a GT28 but if you want torque response.... A properly sized single built and tuned properly will outperform the twins..... Sooooooo do you want to see a boost gauge going crazy, or do you want to put torque out? I would prefer to make power, not just crazy boost.
In terms of numbers, at 2500rpms I could see 17psi with my old BNR's, with the Stg V I'll see > 10 psi, however, at less boost I'll make more power. Most of it has to do with EMAP and how efficient everything is. At 10psi on the BNR's I would see about 15psi of EMAP, by 14.5 psi of boost I was seeing 29psi of EMAP and I was making ~378RWHP. By comparison with the GT35R STG V, at 14 psi I see ~ 15 psi of EMAP, and I was making 405 RWHP with more in there given more tuning.... I spent 45 minutes tuning that car the morning we left for DGRR. So, here's the thing, think of an engine as an airpump, boost ( MAP) goes in, EMAP comes out. MAP/EMAP = efficiency, which setup is more efficient?
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This really making me rethink my setup... Sadly.
I love the idea of keeping my 95 FD with sequential twins for nostalgia's sake. But this sounds like it would suit my driving better...
Who knows. I'll probably just stick with what I have for now, finish the build with twins. And if I don't like it, then switch over. The only additional expense I'll have to deal with that I haven't already bought and paid for is the solenoid set for controlling the twins.
11-25-2013, 01:55 PM
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