stibbutt Posted February 25, 2014 Share Posted February 25, 2014 I have a 2007 GTB that appears to have a 'sticking' Si drive as in it won't engage S or S# mode - very frustrating as the car just feels choked when u want it to go! turning the knob indicates it has engaged wither mode (light on dash shows S or S# but the car just doesn't take off as it should) Any ideas? Link to comment Share on other sites More sharing options...
spec.B Dream Posted February 25, 2014 Share Posted February 25, 2014 IAM dropped? Can you borrow a tactrix cable and pull a LearningView? Sent from my Nexus 4 using Tapatalk Link to comment Share on other sites More sharing options...
stibbutt Posted February 25, 2014 Author Share Posted February 25, 2014 Limited tech knowledge here! - IAM?? Link to comment Share on other sites More sharing options...
PtPixel Posted February 25, 2014 Share Posted February 25, 2014 IAM is the Ignition Advance Multiplier. Usually this will sit at a value of 1.0 - so your car runs the ignition advance it is supposed to. If your car detects any knock or there is a CEL (check engine light) then the IAM will be dropped - usually to about 0.75. This retards the ignition advance to protect the engine from knock. If your IAM has dropped then the cars responsiveness will drop. I would have thought you'd still see the changes in the throttle position vs. requested torque (what changing between I, S and S# does) even with a lowered IAM. Link to comment Share on other sites More sharing options...
stibbutt Posted February 25, 2014 Author Share Posted February 25, 2014 thanks!, so suggested course of action? - is the fix likely to be pricey? Link to comment Share on other sites More sharing options...
PtPixel Posted February 25, 2014 Share Posted February 25, 2014 Couldn't tell you without knowing what the issue is? You don't have a CEL I presume? If you can get your hands on a tactrix or a vag-com cable then you can hook your laptop up to the cars ECU. Then use a program called "learning view" and grab a screenshot from that program. The members on here can then help you figure out what's going on. Link to comment Share on other sites More sharing options...
stibbutt Posted February 26, 2014 Author Share Posted February 26, 2014 cool will try and get hold of a cable and have a look - thanks team Link to comment Share on other sites More sharing options...
Max Capacity Posted February 26, 2014 Share Posted February 26, 2014 Or, find a local Tuner that can do that for you and give you more info on what could be the problem. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
chimera Posted February 26, 2014 Share Posted February 26, 2014 cool will try and get hold of a cable and have a look - thanks team Just flicked you a PM - I'm in Auckland too and I gotta Tactrix cable so can help you out. It won't be IAM though, as you can always go to I or S modes even with IAM < 1.0. Unsure about S# though - I do know you can't go to S# until the cars warmed up at least. Link to comment Share on other sites More sharing options...
spec.B Dream Posted February 26, 2014 Share Posted February 26, 2014 I read the OP as the modes were switching, it just didn't feel like they were. The car feels down on power. Sent from my Nexus 4 using Tapatalk Link to comment Share on other sites More sharing options...
chimera Posted February 26, 2014 Share Posted February 26, 2014 Perhaps - I read that the OP contradicts himself from his first sentence to the next! If he's saying its engaging S and S# but no power, then yeah PtPixel is likely to be spot on with IAM. Easier if I just LV it for him and see... stibbutt - what fuel are you using? Need BP 98 or Mobil 8000 (purple pump) anything else will drop IAM and make your car drive like poo Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.