Paul R Posted January 9, 2004 Share Posted January 9, 2004 Hi, How do you retard the timing on a J-Spec TT?? is it easy to adjust? Paul. Link to comment Share on other sites More sharing options...
eyefi Posted January 9, 2004 Share Posted January 9, 2004 stock ecu? Link to comment Share on other sites More sharing options...
Paul R Posted January 9, 2004 Author Share Posted January 9, 2004 Yes. Link to comment Share on other sites More sharing options...
Paul R Posted January 9, 2004 Author Share Posted January 9, 2004 Thoght loadsa people would know the answer to this??? bah!! Link to comment Share on other sites More sharing options...
Adam W Posted January 9, 2004 Share Posted January 9, 2004 What are you trying to achieve? Link to comment Share on other sites More sharing options...
Paul R Posted January 9, 2004 Author Share Posted January 9, 2004 Originally posted by Adam W What are you trying to achieve? Well it's all anbout NO2 you see! As far as I can see after you go over a 75-100 shot of nitrous you have to start retarding the timing. I want to know how this is achieved and what adverse affects it will ahve under normal driving conditions? Is it possible to retard the timing on the move? Paul. Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 9, 2004 Share Posted January 9, 2004 The only way is with an Apexi S-ITC if you have a stock ECU. These are discontinued & like rocking horse shit, but as luck would have it Dude told me he is selling a new boxed one. Give him a call 07973 422272 I am sure some clever git like Matt H could wire it so it only switched on when the NOS was armed, that way you will still have normal day 2 day running. Link to comment Share on other sites More sharing options...
Adam W Posted January 9, 2004 Share Posted January 9, 2004 People like NOS and MSD sell ignition retard boxes which will only activate when your system is firing (if you drive round with retarded ignition all the time then you will be losing power when the nitrous is off) but you would have to investigate which systems would work with the Supras ignition setup. Or you could buy my s/h Apexi ITC off me Link to comment Share on other sites More sharing options...
Paul R Posted January 9, 2004 Author Share Posted January 9, 2004 Originally posted by Adam W People like NOS and MSD sell ignition retard boxes which will only activate when your system is firing (if you drive round with retarded ignition all the time then you will be losing power when the nitrous is off) but you would have to investigate which systems would work with the Supras ignition setup. Or you could buy my s/h Apexi ITC off me How much are they and could it be installed by a nonce like me?? Paul. Link to comment Share on other sites More sharing options...
Adam W Posted January 9, 2004 Share Posted January 9, 2004 I dunno, go do some research http://www.summitracing.com probably sells what you need though Link to comment Share on other sites More sharing options...
Matt Harwood Posted January 9, 2004 Share Posted January 9, 2004 Originally posted by Terry S I am sure some clever git like Matt H could wire it so it only switched on when the NOS was armed, that way you will still have normal day 2 day running. Nooooo! - Too many wires would need to be controlled by relays. I could fit it, no problem, but it would only ever be 'on', not switchable. Paul, yes you could fit it yourself if you're confident with automotive wiring and don't mind working upside down in confined spaces! - It's all done in the kickwell. Link to comment Share on other sites More sharing options...
Paul R Posted January 9, 2004 Author Share Posted January 9, 2004 Originally posted by Matt Harwood Nooooo! - Too many wires would need to be controlled by relays. I could fit it, no problem, but it would only ever be 'on', not switchable. Paul, yes you could fit it yourself if you're confident with automotive wiring and don't mind working upside down in confined spaces! - It's all done in the kickwell. So are you saying that if I fit NO2 with a 75-100 shot then retard the timing, I'm going to have to put up with crap performance when I'm not using it? Paul. Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted January 9, 2004 Share Posted January 9, 2004 I think that's the general idea....... Ben.. Link to comment Share on other sites More sharing options...
Guest Terry S Posted January 9, 2004 Share Posted January 9, 2004 Not sure. If you plan to only run the NOS at certain times, you could just switch the ITC on, and leave it off the rest of the time. Link to comment Share on other sites More sharing options...
GavinL Posted January 9, 2004 Share Posted January 9, 2004 Originally posted by Terry S Not sure. If you plan to only run the NOS at certain times, you could just switch the ITC on, and leave it off the rest of the time. Just put the power to the ITC on the same switch as the NOS. Quite how quickly the stock ECU will start to advance the ignition timing once you switch the ITC off is another matter? Link to comment Share on other sites More sharing options...
Roy Posted January 9, 2004 Share Posted January 9, 2004 Originally posted by Terry S Not sure. If you plan to only run the NOS at certain times, you could just switch the ITC on, and leave it off the rest of the time. eerrmmm ... numpty speaking but i thought the ITC unit was perpetually on ie not possible to switch on n off as you like ? i am also assuming once a retardation level is chosen it is not possible to adjust on the fly ? is this correct ? thanks ... Link to comment Share on other sites More sharing options...
Paul R Posted January 9, 2004 Author Share Posted January 9, 2004 There is a system called a MEGATRONIC ID 2000 ignition system from http://www.nitrous-solutions.com/ It say's that it's a switched timing retarder. Looks like this could be whats needed?? Paul. Link to comment Share on other sites More sharing options...
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