Ford_Power Member 798 Member For: 21y 9m 27d Posted 14/06/05 02:28 PM Share Posted 14/06/05 02:28 PM (edited) I too agree it is something electronic.I find it tends to happen more often when the ambient temp is lower, say <12degC.Its not lag, because if you just hold it in gear at say 3000rpm for 5 seconds and then floor it, it simply takes off and there is no momentary wait before the power comes on.Perhaps it could be the time delay in the wastegate responding to the commanded boost level?This is possible because at the top end of the rpm scale (say 5000rpm) it may only be running 3psi boost, so the wastegate is far open, then when the revs drop, (to say 3000rpm) the commanded boost may go up to 6psi and thus the wastegate has to shut to increase the boost pressure.Just a theory...Ross Edited 14/06/05 02:30 PM by Ford_Power Link to comment Share on other sites More sharing options...
F6 UTE - Track Bound EVO III - Member 3,367 Member For: 20y 1m 12d Gender: Male Location: Strapped in and holding on Posted 15/06/05 10:09 AM Share Posted 15/06/05 10:09 AM Perhaps it could be the time delay in the wastegate responding to the commanded boost level?This is possible because at the top end of the rpm scale (say 5000rpm) it may only be running 3psi boost, so the wastegate is far open, then when the revs drop, (to say 3000rpm) the commanded boost may go up to 6psi and thus the wastegate has to shut to increase the boost pressure.Just a theory...Ross<{POST_SNAPBACK}>Hey Ross, what you are explaining is Lag. There are many different types of lag associated with turbo cars, spool up time is just one. The time it takes to fill the plenum is also considered lag,Time it takes for wastegate to open/shut is very minimal, any wouldn't effect it imo.. I think its the fly by wire, as you say, being electronically inhibbited.. Link to comment Share on other sites More sharing options...
Hazey Member 234 Member For: 21y 5m 21d Posted 02/07/05 07:09 AM Share Posted 02/07/05 07:09 AM To all that have experienced this problem I need to ask you this.Have you had the lates flash from ford? I have a MKII and ford told me the thing was overboosting on 8psi instead of 6, this was then causing the computer to cut the power as it detected this.Well since having the latest flash my car goes like a rocket now and I have no noticiable turbo lag between changes.The engine pulls as hard as it was before you put the clutch in and then resume acceleration. Definatly goes quickerAidan Link to comment Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 7m 4d Gender: Male Posted 28/05/07 06:55 AM Share Posted 28/05/07 06:55 AM im bumping this as it is very evident now with the short shifter in my car..into 2nd it doesn't have any problem chirping/sliding, but into 3rd and 4th there is a noticeable drop in power for a millisecond, kinda like when you just touch the limiter.. was there another thread on this where the answer was found? Can you definatly get rid of it with edit now?anyone else getting this? Link to comment Share on other sites More sharing options...
AzMahoony Hench, but no longer shredded or tanned. Member 3,343 Member For: 17y 9m 30d Gender: Male Location: Canning Vale, W.A Posted 28/05/07 06:58 AM Share Posted 28/05/07 06:58 AM my car must suck becuase I cant get the back wheels to chirp/spin.. my car is around the 240rwkw markthat's without traction control too.. Link to comment Share on other sites More sharing options...
BFHOON Donating Members 1,932 Member For: 18y 10m 3d Gender: Male Location: nsw Posted 28/05/07 07:18 AM Share Posted 28/05/07 07:18 AM im going to say its turbo lag.I have noticed the same things u guys have, remember its a big turbo on these suckers.with the stock tune its not so bad but the more boost you use the more lag you will see as there is more power with more boost so 4 psi feels slow untill 15 psi kicks in.a custom tune will allow more boost to be added lower in the rev range and give you the kick your after most generic tunes have a fairly soft boost curve.removing the stock blockagecooler/intercooler will help too.some will say im wrong but a bigger cooler and pipes makes boost earlier with better throttle response. Link to comment Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 7m 4d Gender: Male Posted 28/05/07 07:19 AM Share Posted 28/05/07 07:19 AM I have felt lag but this is not it.. like I said, it feels like the limiter!! it makes the car bump.. Link to comment Share on other sites More sharing options...
EZ2CME Formerly XR6NA Member 3,512 Member For: 19y 1m 28d Gender: Male Location: Brisbane Posted 28/05/07 09:53 AM Share Posted 28/05/07 09:53 AM my car must suck becuase I cant get the back wheels to chirp/spin.. my car is around the 240rwkw markthat's without traction control too..My cars got 244rwkw and mine won't spin chirp just in standard mode but go to fully manual mode in the auto and the fun begins Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 9m 2d Gender: Male Location: Brisbane Posted 28/05/07 10:26 AM Share Posted 28/05/07 10:26 AM They're talking about antiquated agricultural gearboxes though Benji Link to comment Share on other sites More sharing options...
EZ2CME Formerly XR6NA Member 3,512 Member For: 19y 1m 28d Gender: Male Location: Brisbane Posted 28/05/07 10:29 AM Share Posted 28/05/07 10:29 AM I know but Silhoutte6T has 6 speed auto if I'm not mistaken Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now