Alex Posted August 11, 2014 Share Posted August 11, 2014 You can't have the Sequential TT setup and 4-600. You may get 420 but that's about it. More than that is BS IMO. You'd be better off (when wanting reliability) all round fitting a GT35R *sized* single with a decent fuel system and programmable ECU for a reliable, fast spooling 500+hp. Wringing the neck of stock TT's is not good for long term. As for who to do the work you're better canvassing opinion on SupraForums.com. But IMO find a tuner you're happy with then do/buy as they say, don't throw kit at someone and ask them to make it work. Quote Link to comment Share on other sites More sharing options...
Guest RyGuy_VVTI-TT Posted August 15, 2014 Share Posted August 15, 2014 You can't have the Sequential TT setup and 4-600. You may get 420 but that's about it. More than that is BS IMO. You'd be better off (when wanting reliability) all round fitting a GT35R *sized* single with a decent fuel system and programmable ECU for a reliable, fast spooling 500+hp. Wringing the neck of stock TT's is not good for long term. As for who to do the work you're better canvassing opinion on SupraForums.com. But IMO find a tuner you're happy with then do/buy as they say, don't throw kit at someone and ask them to make it work. I don't plan to stay stock and get that power--but with upgraded turbos, fuel and tuning, maybe cams, whatever--I should be able to get 550ish HP with a TT setup. But the number isn't the goal. I'll take what i can get. I wanna keep the quick spool, early torque feel of a TT VVT-I. Ya, i want to start with the tuner. Thats why I'm asking. Quote Link to comment Share on other sites More sharing options...
fastby4 Posted August 16, 2014 Share Posted August 16, 2014 I changed from a 2JZ GTE stroker to a 2JZ GTE stroker VVTi. it was a big step forward,the VVTi spools 800-1000 rpm earlier. Quote Link to comment Share on other sites More sharing options...
JamieP Posted August 16, 2014 Share Posted August 16, 2014 Nice looking setup, I'm surprised it made so much difference to the spool. My 6266 on a VVTI don't spool any quicker than my old non VVTI Borg Warner S300SX setup, both 62mm turbos. Maybe it helps more with bigger setups. Quote Link to comment Share on other sites More sharing options...
fastby4 Posted August 16, 2014 Share Posted August 16, 2014 yes the difference is greater than I would have thought it before. Quote Link to comment Share on other sites More sharing options...
Alex Posted August 17, 2014 Share Posted August 17, 2014 I don't plan to stay stock and get that power--but with upgraded turbos, fuel and tuning, maybe cams, whatever--I should be able to get 550ish HP with a TT setup. But the number isn't the goal. I'll take what i can get. I wanna keep the quick spool, early torque feel of a TT VVT-I. Ya, i want to start with the tuner. Thats why I'm asking. The term "upgraded" suggests stock based and that's not physically possible. You will have to use a Single or Parallel Twin system to achieve 450+ Quote Link to comment Share on other sites More sharing options...
Guest ViosSpeed Posted August 23, 2014 Share Posted August 23, 2014 Wasted Spark ignition. This IMO is a step backwards to coil on plug. Can someone please elaborate on this more and how this compares with non VVTi 2JZ's? Quote Link to comment Share on other sites More sharing options...
j_jza80 Posted August 23, 2014 Share Posted August 23, 2014 I changed from a 2JZ GTE stroker to a 2JZ GTE stroker VVTi. it was a big step forward,the VVTi spools 800-1000 rpm earlier. http://s1.directupload.net/images/140816/5oxh4yvs.jpg What sort of power / torque figures does your setup produce? Not many big power VVTi Setups around, I guess you're at the 700-800hp level with that setup? Quote Link to comment Share on other sites More sharing options...
fastby4 Posted August 25, 2014 Share Posted August 25, 2014 I have at the moment no Dyno results but the target is 1000+ with the VVTi with the non VVTi I have a Dyno run. Quote Link to comment Share on other sites More sharing options...
Guest RyGuy_VVTI-TT Posted September 25, 2014 Share Posted September 25, 2014 The term "upgraded" suggests stock based and that's not physically possible. You will have to use a Single or Parallel Twin system to achieve 450+ Well, I apologize for my terminology. I plan to get bigger turbos, HKS I think, and whatever other bits and pieces the tuner suggests. The point is, I plan to stay TT and get as close to 500-600tq. If that means a parallel setup, then I'll look into that, as long as they spool up @ 1500 RPM and produce amazing torque throughout like they do now. Quote Link to comment Share on other sites More sharing options...
Alex Posted September 25, 2014 Share Posted September 25, 2014 Well, I apologize for my terminology. I plan to get bigger turbos, HKS I think, and whatever other bits and pieces the tuner suggests. The point is, I plan to stay TT and get as close to 500-600tq. If that means a parallel setup, then I'll look into that, as long as they spool up @ 1500 RPM and produce amazing torque throughout like they do now. Sorry to sound negative but your hopes of an off the shelf HKS twin system spooling noticeably from 1500 are unlikely to be realised - I would look at HKS2835R dyno graphs from the past to confirm. I don't know of any small twin systems for the Supra, only big ones. So, ok, maybe you could find the twin manifolds and bolt to their T25/T3(?) flanges a pair of smaller non HKS turbo's which would spool nice and fast. You'll need to custom fab the intake and exhaust systems, create a kit of oil/water feeds/drains, then sort out a fuel system and get it all mapped. Or, you could bin the weight of the twins and bolt on a conventional small single system which will deliver 90% of what you want at a fraction of the costs going custom would incur. http://www.spracingonline.com/store/SP_Racing_Torque_Monster_Turbo_Kit_93-98_MKIV_Supra/3256 See the attached picture for an EXAMPLE of what I would get with your power/torque requirements. The reason there are no small twin systems is that they are not economically viable as a commercial product. I'm sure if you spoke with MVP/Titan/SP etc they can/have done special kits before but where things are custom/special there is inherent costs. Up to you if you want to afford them. Quote Link to comment Share on other sites More sharing options...
imi Posted September 25, 2014 Share Posted September 25, 2014 I changed from a 2JZ GTE stroker to a 2JZ GTE stroker VVTi. it was a big step forward,the VVTi spools 800-1000 rpm earlier. http://s1.directupload.net/images/140816/5oxh4yvs.jpg nice looking engine bay.... Quote Link to comment Share on other sites More sharing options...
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