Chris McGlasson 0 Posted February 9 Hi does anyone know if the 1600 vvti auris ecu is locked or not , wanting to get it remapped but unsure if this can be done Share this post Link to post Share on other sites
Heidfirst 849 Posted February 9 there is no point on a naturally aspirated engine. 1 Share this post Link to post Share on other sites
Chris McGlasson 0 Posted February 10 Yeah I was going to get a crackle and pop map on it but I’ve been told that this isn’t possible ? Can you shed any light on why ? Share this post Link to post Share on other sites
Heidfirst 849 Posted February 10 e.g. https://www.autoevolution.com/news/steve-dinan-explains-why-ecu-tuning-naturally-aspirated-engines-is-useless-video-101260.html You could perhaps get some more power on an NA with a remap but it is likely to be 10% or less whereas on forced induction they will whack up the boost to gain a lot more (but likely at the cost of much finer margins on reliability). There will also be sheer demand - much less demand for a remap on a 1.6 VVTi than on e.g. a VW 2.0 turbodiesel so much less experience. & it took ~ 10 years before somebody cracked the Denso ECU encryption on the AD series diesels, not sure if the VVTis are the same but there won't have been the same demand (& therefore return on effort/investment) to do so. To get pop & crackle I believe that they lean the mixture & !Removed! the spark but I imagine that you also need a fairly hot exhaust (it's unburnt fuel burning in the exhaust that makes the noise). I would imagine that your best chance would be to ask somebody like Fensport but I don't think that you will get a lot for your money unless you start making hardware changes too & then the costs will start to rocket (once the power goes up you will also want better brakes & handling). Share this post Link to post Share on other sites
Chris McGlasson 0 Posted February 11 Yeah I see your point for gains, but the 1.6 vvti isn’t the quickest engine around and there is little to none aftermarket parts for them, what I’m going on it a full decat exhaust and hope for the best it crackles and pops, without a stand-alone ecu I don’t think crackle and pop map is possible Share this post Link to post Share on other sites
FROSTYBALLS 2,362 Posted February 11 With the changes to the MOT introduced last May, removing the catalyst will mean a major MOT fail. Share this post Link to post Share on other sites
Chris McGlasson 0 Posted February 11 yeah this will need to be swapped out, I’m only going to remove the cat and do a sound test, if it sounds to loud and lacks power I can add a silencer into the ststem Share this post Link to post Share on other sites
