27-12-2012, 09:23 PM
(26-12-2012, 01:07 PM)Poodle Wrote: Now that was my thoughts piggy, maybe expand the operating parameters a little so its active for more time. It certainly seemed like it made a difference to throttle response, at least when changing from cruising to hard acceleration. It also causes a slight hesitation when it engages, barely noticeable, but again, certainly there. Maybe I should do some testing with it once the project is on the road again...
I was gonna say the same.
I tested this years back (as per my post above), and found the same kind of results.
http://www.tdocuk.com/viewtopic.php?f=41&t=399&start=15
I also did these acceleration tests for seeing if there was an outright difference.
http://www.tdocuk.com/viewtopic.php?f=41&t=714
So plenty to be having a think about I'd say.
Reading back it seems I concluded there were probably no overall gains, but there is certainly something going on at lower rpm's where throttle response seems better and perhaps that improves the low-end fuelling/boost cycle giving a fraction more power in transient conditions.
A bit like EGR I suppose, no outright benefit, but it's clearly noticeable when off > on throttle and the boost cycle too is impacted by EGR (ie, lower transient power gradient)
Dave