Branners Posted June 3, 2003 Share Posted June 3, 2003 any techies got any thoughts on this? Its supposed to be a quick and easy way to get the turbos in to TTC mode. http://www.members.optusnet.com.au/arpetrie/Supra/Hose%20TTC/index.html JB Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted June 3, 2003 Share Posted June 3, 2003 There is (was?) an article on MKIV.COM about a true TT conversion, rather than playing with pipes it was controlled by a dash switch connected to the ECU. It seemed pretty simple and only had one big caveat. Don't switch when there is ANY pressure in the system as it will blow the pressure tank. I asked around and nobody here had tried it or could see any advantage to it. I think it allows the first turbo to use full boost, rather than peaking at 10PSI (or whatever it is) Quote Link to comment Share on other sites More sharing options...
Adam W Posted June 3, 2003 Share Posted June 3, 2003 I don't think you make any more power like that, you just get a nicer boost curve rather than a big jerk as #2 suddenly "switches on". Quote Link to comment Share on other sites More sharing options...
adi Posted June 3, 2003 Share Posted June 3, 2003 you lot are just 1JZ wannabees Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted June 3, 2003 Share Posted June 3, 2003 That's a bit like saying we want to drive a Soarer. Quote Link to comment Share on other sites More sharing options...
Simon Posted June 3, 2003 Share Posted June 3, 2003 Theres an article on the New Zealand site which I've paraphrased below. Now I don't know whether this effect quoted was a one off or would be applicable to all vehicles, but it may help out. Quote What happens if you do this? When I tried it on my Japanese spec mkiv TT 6 speed, the results were not good. There was no boost below 3000rpm and it got to about 12lb by 4000rpm and max boost by 5000rpm. This resulted in extremely poor low down torque (felt like an NA 2.0L) and was a much harder car to drive quickly around town. When I tried it at the drag strip it was also not very good. Unless I changed the gears at the redline, it would bog down and I would get a slow high 13 second pass. Changing at the redline dropped this to a best of 13.5sec, which is still slower then it should do with 227kw at the wheels. I have changed the turbos back to sequential and am really enjoying the huge low down torque this gives. Unquote http://mkiv.supras.org.nz/techo.htm#TTC Quote Link to comment Share on other sites More sharing options...
eyefi Posted June 3, 2003 Share Posted June 3, 2003 simon, that was done using the mkiv.com method. this way is a little different. ive been seriously thinking about ditching the seq setup and going true parallel. im sure, with a good amount of off boost ignition timing, this would produce more area under the power curve and give a more usable mid range. Quote Link to comment Share on other sites More sharing options...
Ian C Posted June 3, 2003 Share Posted June 3, 2003 Looks theoretically possible, I'm not sure what benefits it will give though, and how much the ECU will wig out over making 1.3 bar of boost at 3000 rpm in 6th, but looks worth a try if anyone is interested. -Ian Quote Link to comment Share on other sites More sharing options...
matt Posted June 3, 2003 Share Posted June 3, 2003 I have the ETTC thro' a switch . Like the option of seq or twin as the mood takes me. Couldn't live with TTC full time tho' ...... way too laggy for rapid take off Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted June 3, 2003 Share Posted June 3, 2003 Matt, do you have an auto or manual? What do you think in TTT mode? Quote Link to comment Share on other sites More sharing options...
matt Posted June 3, 2003 Share Posted June 3, 2003 Auto In TTT I like the increased low revs exhaust note:innocent: When I'm out playing and in Manu mode its great once your moving ........ cos its always above 3k then anyway and its a nice smooth powerband ... good for gettin the arse out controllably. I switch between the two all the time ...... lately just using seq when at lights etc Quote Link to comment Share on other sites More sharing options...
eyefi Posted June 3, 2003 Share Posted June 3, 2003 just tried it in a manual. 'kin 'el its loud a bit too loud for me, totaly changes the exhaust note, it sounds like a spitfire. +ve boost before 3k, full just after. very smooth. needs remapping to take full advantage. Quote Link to comment Share on other sites More sharing options...
Thorin Posted June 3, 2003 Share Posted June 3, 2003 Originally posted by eyefi just tried it in a manual. 'kin 'el its loud a bit too loud for me, totaly changes the exhaust note, it sounds like a spitfire. +ve boost before 3k, full just after. very smooth. needs remapping to take full advantage. Louder you say? Be back in a minute! :flame Dev Actually I'll give it a go some other day when I've more time, I'm just curious. Quote Link to comment Share on other sites More sharing options...
Steve W Posted June 3, 2003 Share Posted June 3, 2003 Sounds VERY interesting.... I'd try it, but, ANY chance it's gonna strain/blow me engine:eek: ? and, what IS the 'switch' version ? ? that sounds better... I presume the 'ultimate' boost is still the same ? or are the turbos actually 'working' differently ? Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted June 3, 2003 Share Posted June 3, 2003 This is the mechanical version http://www.mkiv.com/techarticles/ttc/ttc.htm The electrical one :- http://www.mkiv.com/techarticles/ettc/index.html Quote Link to comment Share on other sites More sharing options...
dude Posted June 4, 2003 Share Posted June 4, 2003 Originally posted by Steve W Sounds VERY interesting.... I'd try it, but, ANY chance it's gonna strain/blow me engine:eek: ? and, what IS the 'switch' version ? ? that sounds better... I presume the 'ultimate' boost is still the same ? or are the turbos actually 'working' differently ? MUCH less chance of blowing No2 Turbo. John:flame Dev Quote Link to comment Share on other sites More sharing options...
eyefi Posted June 4, 2003 Share Posted June 4, 2003 the boost seems alot more controllable in this mode. no big spikes. have been trying it out tonight with a bit more throttle and saw +ve boost at 2K. 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.