cossie350 0 Posted June 19, 2007 Hi all i see the above mentioned in a recent topic and was wondering if anyone has actually done it. I'm running a standard S16 lump with an air filter/exhaust and obviously de-cated. So the engine should be running slightly on the lean side and i happen to have a set of 1.9gti injectors kicking about. Do or dont. Thanks in advance Share this post Link to post Share on other sites
Baz 421 Posted June 19, 2007 Pretty sure the s16 injectors are the same anayway. Or at least have the same flow rate. Share this post Link to post Share on other sites
Miles 331 1 Cars Posted June 19, 2007 The S16 injectors are different and not sure of flow rates off hand, But don;t stick in the 1.9 ones as I bet it will run like a dog Share this post Link to post Share on other sites
petert 554 Posted June 19, 2007 I've done it. It works perfectly. You'll have very nice crisp mixtures, from 12.5 to 13.5:1, rather than 14.4-14.7:1 The ECU will complain because it can't lock onto closed loop, but other then that, enjoy! 214cc rather than 196cc, thus 9% richer. Share this post Link to post Share on other sites
lee-bg 0 Posted June 20, 2007 i confirm what is said by petert. I was going to mention the same done by a friend. Same results, it works. No idea why , but injectors from 1,9 8v and 16V are indeed are higher flow Peter, can you give some 'light' on why the ECU is complaining ? i.e. if injectors are connected with same connectors why the close loop wouldnt work ? thanks in advance. Share this post Link to post Share on other sites
Doof 11 Posted June 20, 2007 Because for each injector pulse more fuel is going into the engine, and the engine management doesn't know that because it doesn't know the injectors are bigger. It just sees a richer mixture and is unable to lean off sufficiently. Share this post Link to post Share on other sites
cossie350 0 Posted June 20, 2007 Excellent thanks, will report back when i get them in Share this post Link to post Share on other sites
cossie350 0 Posted June 20, 2007 It runs sweet as a nut still, as for the performance gain i wouldnt really like to say, it feels more responsive but it may be all in the head. Anyway better to be a little on the rich side than lean so all is good . Thanks for the help . Share this post Link to post Share on other sites
lee-bg 0 Posted June 20, 2007 yes, injectors just squirt mode, but ECU doesnt know that. Thats why i am curious what that has to do with ECU close loop mode since close loop is electrical , but injectors squirting more is just "more fluid", they are same Ohm and same electrics (i guess). Share this post Link to post Share on other sites
cossie350 0 Posted June 20, 2007 My 2 pence worth im sure PeterT or Doof will agree or disagree. As you say the injectors will be sent the same Ohm's from the ECU on closed loop mode but as the are bigger the will be injecting more fuel, hence the engine running richer. The lamda will pick this up but cannot lean it off enough because it is not on the standard map. Share this post Link to post Share on other sites
