Paul Laing Posted September 26, 2003 Share Posted September 26, 2003 Anyone know which is best? what do most people on here go for? and is it easy to swap between the two? Paul Link to comment Share on other sites More sharing options...
Ian C Posted September 26, 2003 Share Posted September 26, 2003 Sequential. Your ignition timing will be correct below 4k rpm and you will have much better low down power. -Ian Link to comment Share on other sites More sharing options...
Gaz Walker Posted September 26, 2003 Share Posted September 26, 2003 Most (nearly everyone) here run sequential. It's relatively easy to swap between. Gaz. Link to comment Share on other sites More sharing options...
Paul Laing Posted September 26, 2003 Author Share Posted September 26, 2003 plus sequential is the way it was intended...... Link to comment Share on other sites More sharing options...
GavinL Posted September 26, 2003 Share Posted September 26, 2003 Originally posted by Ian C Sequential. Your ignition timing will be correct below 4k rpm and you will have much better low down power. -Ian I run in TTC now and prefer it, just a matter of changing gear when power is required. Matt Harwood did the ETTC mod (as per http://www.mkiv.com) for me a few weeks back. I may well have the sequential system stripped out entirely in a few months. Link to comment Share on other sites More sharing options...
Paul Laing Posted September 26, 2003 Author Share Posted September 26, 2003 so how is this better than Toyota intended? It's supposed to have a lot more lagg low revs. Link to comment Share on other sites More sharing options...
cashpoint Posted September 26, 2003 Share Posted September 26, 2003 Been running TTC now for about 4 weeks to start it was shit but as i've got used to it i like it. Lag is much larger than before but mpg has improved alot 30%. The change took about 10 mins and that include the time i spent with my hand under cold water after i burnt it on the front turbo:stupid: Can now change back in about 2 mins so it's easy to do Link to comment Share on other sites More sharing options...
Paul Laing Posted September 26, 2003 Author Share Posted September 26, 2003 whats the main differences mate? Link to comment Share on other sites More sharing options...
Patrick_Devlin Posted September 26, 2003 Share Posted September 26, 2003 Whats TTC again? Link to comment Share on other sites More sharing options...
Paul Laing Posted September 26, 2003 Author Share Posted September 26, 2003 True twin Conversion Link to comment Share on other sites More sharing options...
Patrick_Devlin Posted September 26, 2003 Share Posted September 26, 2003 Thats the one, I remember a thread on this a while ago. Link to comment Share on other sites More sharing options...
Mark Ayling Posted September 26, 2003 Share Posted September 26, 2003 I tried TTC but didn't like it, the car felt gutless at first and then suddenly went mad where the second turbo would normally kick in. I suppose you could get used to it, but personally I like to have as much low-down power as possible. One thing it did do which was interesting was completely change the sound of the car, the exhaust note (with a decatted Hiper) was totally different, less "burble" more "drone", also an acquired taste I guess but I wasn't keen. Link to comment Share on other sites More sharing options...
Patrick_Devlin Posted September 26, 2003 Share Posted September 26, 2003 Never tried it obviously, but one of the things I like about the Supra is the amount of power and torque across the rev range. I've owned turbo cars in the past that had big lag and surge at a particular point and they were pretty hard work to drive. Would have liked to hear what your decatted hiper sounded like Mark. Link to comment Share on other sites More sharing options...
cashpoint Posted September 26, 2003 Share Posted September 26, 2003 Originally posted by Paul Laing whats the main differences mate? Lag. The turbos don't come on till 3500rpm Exhaust note is different and at high speed it does drone on a bit but at low speed my exhaust burbles away quite happily then past 4K rpm your flying I used this TTC method simply and quick. Got it from eyefi when i was think about going TTC. Link to comment Share on other sites More sharing options...
Paul Laing Posted September 26, 2003 Author Share Posted September 26, 2003 Cheers for the replys, but for now i think i'll just stick with sequential. I like the way you can be in 4th doing 30mph and when you put your foot down it just takes off, as if it was in 1st. Quality! Paul Link to comment Share on other sites More sharing options...
Patrick_Devlin Posted September 26, 2003 Share Posted September 26, 2003 Paul, I thought that you were gonna make the change, and do it yourself, what with all the research you've been doing lately!!! http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=12499 Link to comment Share on other sites More sharing options...
pulse Posted September 26, 2003 Share Posted September 26, 2003 Are there any actual performance differences between the two? How would running both turbos in TTC mode compare to a bigger single turbo? Would there be any 1/4 mile or power output differences between TTC and sequential? Thanks -p Link to comment Share on other sites More sharing options...
Ian C Posted September 26, 2003 Share Posted September 26, 2003 Above 4000rpm you have both turbo's online in either mode, so the power output will be exactly the same. Mpg may well be improved in parallel mode because it's so facking gutless round town because you can't get on boost Parallel mode may have the edge between 3500 and 4000rpm where the sequential system would be prespooling turbo 2, as it's already got both turbos online. Above that it's the same, below that it's woeful. -Ian Link to comment Share on other sites More sharing options...
eyefi Posted September 26, 2003 Share Posted September 26, 2003 parallel with ecu tuned for it. i dont think it suits autos that well. Link to comment Share on other sites More sharing options...
Scooter Posted September 26, 2003 Share Posted September 26, 2003 as you all probably know i drove mine all the time in parallel mode without knowing. With nothing to compare except my old NA i didn't find it laggy, certainly not enough to question via this board if something was wrong with my, at the time, new car. I loved the car and its power, don't know how it relates to the sequential setup but perfectly driveable. I suppose the setup is more like the v-tec type cars where if you want to go for it you need to be in the right rev range, whereas i'm assuming this is less important with the sequential setup. Link to comment Share on other sites More sharing options...
Matt Harwood Posted September 26, 2003 Share Posted September 26, 2003 I like the TTC mode personally. I've just done the ETTC on Dude's auto, and it's not as bad as I expected, in fact IMO, it's quite acceptable. He's on positive boost at about 2,300 and on full at 3,500. It's easier to drive around the lag with a manual, but I don't really find it that laggy. I used to love the kick at 4,000 that the sequential can give, but I'd noticed a few times that the kick, can be enough to break traction. In TTC mode, the power increase is more progressive as opposed to a power switch at 4,000 rpm. Definatly a personal preference thing. Ian, have you actually tried it on your car? Link to comment Share on other sites More sharing options...
Ian C Posted September 27, 2003 Share Posted September 27, 2003 Originally posted by Matt Harwood Ian, have you actually tried it on your car? Coughnocough OK, Ok, I'm 'slagging off' something I've never tried, rumbled, guilty, hangs head in shame But I've thought it through and I just can't see a benefit *for me*. I love the low down grunt turbo 1 gives, and I don't have a problem with turbo 2 breaking traction in a suprising manner so there is no reason for me to sacrifice something for nothing. -Ian Link to comment Share on other sites More sharing options...
Steve W Posted September 27, 2003 Share Posted September 27, 2003 Matt.... is it really THAT simple to swap...? is there ANY chance of a side-effect (like, blowing 'ones' pistons to bits..... AGAIN ! !) ? ? If it IS, and if there's NOT, I wouldn't mind tryin' it............ Link to comment Share on other sites More sharing options...
Mark Ayling Posted September 27, 2003 Share Posted September 27, 2003 Originally posted by Steve W Matt.... is it really THAT simple to swap...? is there ANY chance of a side-effect (like, blowing 'ones' pistons to bits..... AGAIN ! !) ? ? If it IS, and if there's NOT, I wouldn't mind tryin' it............ There is a way of trying it by swapping a couple of vacuum pipes around, Dude did this to my car a while back. I don't think its meant to stay like that, buts its a quick/easy way to see whether you like TTC or not... Link to comment Share on other sites More sharing options...
Steve W Posted September 27, 2003 Share Posted September 27, 2003 and.... what's/how hard's the Ettc method = better/swappable etc ? is that the Electronic version, changable ? ? ( ) Link to comment Share on other sites More sharing options...
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