G-reg Posted December 12, 2004 Share Posted December 12, 2004 Long time lurker, first time poster on this forum. But I have a question for you Legacy guys. I've got an 05 2.5RS purchased in July, and it now has 11K on it. I've noticed that occasionally when accelerating "briskly (anything from half to full throttle acceleration)" the RPM's seem to hang or increase a bit on the up shift. It's like the throttle is staying open a bit between shifts, or like I have a huge flywheel. One time after driving around in the snow, some fooling around-mostly point a to b, I got a flashing cruise light with no CE light. The only modification is a snorkus-ectomy. I haven’t seen many NA posters round these parts, but I’ve heard symptoms like this from the Sti guy’s too so this may apply to you GT’ers also. Thanks Link to comment Share on other sites More sharing options...
mccorry Posted December 13, 2004 Share Posted December 13, 2004 Yep.. I think I have seen what you are describing with my LGT.... RPM's jump up ~500 when the clutch is depressed... Link to comment Share on other sites More sharing options...
Deer Killer Posted December 13, 2004 Share Posted December 13, 2004 It's probably the latency. The throttle is still open even though your foot isn't on it. If I drive with my right foot ahead by 500ms at all times everything lines up.. I notice it much more when re-clutching, as it's more annoying then. Link to comment Share on other sites More sharing options...
Parousia Posted December 14, 2004 Share Posted December 14, 2004 I have only noticed this in first gear. When you depress the clutch to transfer to second the car continues to accelerate for a 10th of a second sometimes. It is a little weird and I would think that with the computer controlling throttle that this should be able to be reprogrammed out? Parousia Link to comment Share on other sites More sharing options...
Deer Killer Posted December 14, 2004 Share Posted December 14, 2004 [quote name='Parousia'] It is a little weird and I would think that with the computer controlling throttle that this should be able to be reprogrammed out?[/QUOTE] *shrug* who knows.. waiting for the tuners to say something. Perhaps the throttle butterfly is just slow to react. Perhaps the ECU just sucks. Perhaps the throttle position sensor sucks. Mostly it seems people only change the maps (much to my dislike). There are some very cool things you could do with the actual code, if one really tried. Link to comment Share on other sites More sharing options...
powbmps Posted December 14, 2004 Share Posted December 14, 2004 Thankfully, my GT doesn't do it. I know exactly what you're talking about though. My '02 WRX definately hung up between shifts. It bugged me for the 3 1/2 years that I owned it. It did it stock, with a Unichip and with the UTEC. Wacky! Chris S. Link to comment Share on other sites More sharing options...
G-reg Posted December 14, 2004 Author Share Posted December 14, 2004 I'll bring it up at the dealer I guess, hopefully it's a software problem not a sensor/actuator problem. Though it still is annoying, it's good to see I'm not alone. Link to comment Share on other sites More sharing options...
autoeng Posted January 8, 2005 Share Posted January 8, 2005 Ford has a similar function that they call "dashpot." Basically it retards the decrease in engine speed by giving a little extra fuel/air when you take your foot off the gas. The purpose is to ensure that the transients during the shifts aren't so... transient. It's supposed to help with emissions to a point. They did this with cable-throttle and intake air valves, and with carbs too. This would occasionally cause the same reaction in my 1999 SVT Contour that is described in this thread. Likewise, I know that Diesels have a function that modulates how quickly fuel is taken out when you release the pedal to improve low-speed driveability. Maybe Subaru does something similar here? Link to comment Share on other sites More sharing options...
racerdave Posted January 24, 2005 Share Posted January 24, 2005 cr@p... I hope it's not the Contour disease. I hated that with a passion. I never noticed it on my LGT test drives. Link to comment Share on other sites More sharing options...
G-reg Posted January 24, 2005 Author Share Posted January 24, 2005 I reinstalled my Snorkus for when I take it to the dealer, and it isn't as bad. But I think the computer will learn around the change, becuse it did this before I took the snorkus off. Link to comment Share on other sites More sharing options...
racerdave Posted January 24, 2005 Share Posted January 24, 2005 snorkus? I guess I better search Nasioc... ;) Link to comment Share on other sites More sharing options...
G-reg Posted January 24, 2005 Author Share Posted January 24, 2005 The snorkus is the big intake resonator in the front right fender of many Subys. Removing it is like a free CAI. I don't know if the new Leg's have them, but I'd bet they do. Link to comment Share on other sites More sharing options...
Ridgeracer Posted January 26, 2005 Share Posted January 26, 2005 WTF? I posted about this same problem two days ago and now it seems like its normal? I think its kinda dangerous.. "Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.