F6 UTE - Track Bound EVO III - Member 3,367 Member For: 20y 4m 18d Gender: Male Location: Strapped in and holding on Posted 20/05/07 10:30 AM Author Share Posted 20/05/07 10:30 AM SCRIBR said: wow what an indepth thread!It really opens up alot of questions (obviously).. and makes me wish I remember some of my physics from year 11-12!can't believe I read it all!! ... but I can see why some people don't post anymore and I thought some of my posts were uselesscan't beleive the size of spikos turbo! (top of page 3... cant get the pics to show for me)It ( the thread ) started well, but it's a touchy subject, and it's also a big $$ subject.. Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534898 Share on other sites More sharing options...
SCRIBR Yaris member Member 4,486 Member For: 18y 10m 13d Gender: Male Posted 20/05/07 10:37 AM Share Posted 20/05/07 10:37 AM very true.. I supprised this hasn't come back into focus 2 weeks earlier!I would love to tig myself up a plenum.. but I imagine its alot more work than gettin the bottom half and making stuff to fit to that.. a whole lot more!are still running yours?did u find alot better throttle respones with the shorter pipework? I figure that is one of the major gains. Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534902 Share on other sites More sharing options...
illusionzzz Member 180 Member For: 19y 4m 20d Posted 20/05/07 11:45 AM Share Posted 20/05/07 11:45 AM F6 UTE you obviously know much more about plenum/airflow than myself and all of what you said makes sense. I'm just wondering how the air flows through a front fed plenum when not making major boost, I.e. low rpm etc I've just read a couple of articles about all chambers not getting equal airflow, for example during low rpm the front cylinders get more air and under high rpm/high boost the rear cylinders get more air. Any merit to this? I'm just eager to learn and make the right choices with my induction setup! How'd you own plenum go anyways mate? Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534937 Share on other sites More sharing options...
F6 UTE - Track Bound EVO III - Member 3,367 Member For: 20y 4m 18d Gender: Male Location: Strapped in and holding on Posted 20/05/07 11:53 AM Author Share Posted 20/05/07 11:53 AM Air feed to rear cylinders off boost is helped by tapering the rear of the plenum, there is a formula for this, and it provides equal flow to all cylinders. The pcm also monitors afr's to each cylinder and alters injector pulse to suit.My plenum worked exceptionally well, gaining 45rwkw with 4spi less boost peak, with higher gains through the midrange... I should take some 'propper' piks.On the road, from 2000rpm the surge of torque is a massive improvement. Tyres are turning in 3rd gear before 3800rpm is on the dial.. I hardly find myself revving over 4500rpm, on the road. I run NO bov, aka the Nizpro setup also..Throttle response?? well lag, what's that??I can tonker around at 1500rpm in 4th and the car doesn't shudder or cough. ( not that I hardly do it, but she will do it!..) Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534941 Share on other sites More sharing options...
illusionzzz Member 180 Member For: 19y 4m 20d Posted 20/05/07 12:03 PM Share Posted 20/05/07 12:03 PM Yeah pics would be great mate, sounds like a good design! Whats the benefit of not running a BOV, I just assumed you had to run one? Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534945 Share on other sites More sharing options...
F6 UTE - Track Bound EVO III - Member 3,367 Member For: 20y 4m 18d Gender: Male Location: Strapped in and holding on Posted 20/05/07 12:46 PM Author Share Posted 20/05/07 12:46 PM illusionzzz said: Whats the benefit of not running a BOV, I just assumed you had to run one?That's another argument alltogether!!There's been a debate on it before, no conclusions - just opinion bashing.. Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534967 Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,332 Member For: 19y 7m 11d Gender: Male Location: Perth Posted 20/05/07 12:49 PM Share Posted 20/05/07 12:49 PM F6 UTE said: Air feed to rear cylinders off boost is helped by tapering the rear of the plenum, there is a formula for this, and it provides equal flow to all cylinders. The pcm also monitors afr's to each cylinder and alters injector pulse to suit. How does the PCM know the afrs of one individual cylinder with only on hego sensor? you running 7(?) hego sensors Ben..?Im thinking about going back to no BOV. The only think that puts me off is the sounds of the turkey orgy is a hell of a lot louder and lasts a hell of a lot longer with out the bov..... Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-534969 Share on other sites More sharing options...
F6 UTE - Track Bound EVO III - Member 3,367 Member For: 20y 4m 18d Gender: Male Location: Strapped in and holding on Posted 21/05/07 01:38 AM Author Share Posted 21/05/07 01:38 AM hiddeous said: How does the PCM know the afrs of one individual cylinder with only on hego sensor? you running 7(?) hego sensors Ben..?I got nfi?? Just what I was told!! Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-535075 Share on other sites More sharing options...
Headsex Donating Members 2,528 Member For: 19y 8m 23d Gender: Male Location: Melb Posted 29/05/07 01:54 PM Share Posted 29/05/07 01:54 PM hiddeous said: How does the PCM know the afrs of one individual cylinder with only on hego sensor? you running 7(?) hego sensors Ben..?Firing order. Althought, the sensor only adjusts the stft and ltft trims.. It works in banks. Not individual cylinder trims. Although the 6 cylinder only has 1 bank, unlike a V8, which has 2 banks.So sorry, it doesnt adjust fuel individually based on cylinder Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-538551 Share on other sites More sharing options...
F6 UTE - Track Bound EVO III - Member 3,367 Member For: 20y 4m 18d Gender: Male Location: Strapped in and holding on Posted 30/05/07 02:17 AM Author Share Posted 30/05/07 02:17 AM Headsex said: Firing order. Althought, the sensor only adjusts the stft and ltft trims.. It works in banks. Not individual cylinder trims. Although the 6 cylinder only has 1 bank, unlike a V8, which has 2 banks.So sorry, it doesnt adjust fuel individually based on cylinder I actually think it was your 'mate' that told me. You know the guy, he tought you how to set boost duty cycles or whatever it is to maintaitn preset boost irrelivent of air temps. Same guy that blew a ringland on his Auto F6 from detonation......... from his own tuning Now there's some Link to comment https://www.fordxr6turbo.com/forum/topic/28272-plenum-theorum/page/9/#findComment-538639 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