Tricky-Ricky Posted June 6, 2006 Share Posted June 6, 2006 After reading something on another forum, it got me thinking about a possible use for one of the features of the ultimate, when i tried using it on my S14 (unfortunately i never got around to using this feature as i had problems with the unit i had) but it occurred that it has the ability to turn on and off the variable valve timing on Nissans and Hondas, using RPM as a scale, well the VSVs are controlled from the ECU signals, surly this could be bypassed and the second turbo output and exhaust VSVs be controlled via the Ultimate map, allowing the second turbo to pre spool and come in earlier in the RPM range to give a better effect, it wouldn't be like the TTC mod as the second turbo would have the chance to gradually pre spool, instead of having to compete with the first turbo for enough exhaust flow, anyone care to comment or give it a go? i realise that most people who have the Ultimate, got it for going single but i am using the blue with stock twins and may change to Ultimate. Link to comment Share on other sites More sharing options...
Ian C Posted June 6, 2006 Share Posted June 6, 2006 The ultimate only has one switched output map, so it's not much use for controlling the three VSVs that run the sequential system. -Ian Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted June 6, 2006 Author Share Posted June 6, 2006 Dam i though it had two output maps, wouldn't it only have to switch two VSVs to affect spool up? how about using the Vtec output? Link to comment Share on other sites More sharing options...
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