JamboRS

is there any kind of boost controller that could limt boost in the mid range yet still maintain boost high up for an mfi equipped rst
my prob is that im peaking at 21psi in the mid range and it tails off to 16.3 at 6k rpm,ava reckon its my intercooler,if you turn the boost up to get 18-19psi at 6k then the mid range increases and its dettin,could a boost controller be fitted to get 18-19 psi at 6k rpm and not let the boost in the mid range go past 21psi

Fiecos Dan

i know the Apexi, or eboost can do that,

but cheaper to get your ign ecu remapped/set up.

Turbocabbie

why not get a better intercooler if thats what they think the reason / issue is

JamboRS

Fiecos Dan how do you remap the ignition ecu

UnseenMenace
ive got a grs what could i change it to?

Fiecos Dan

Get Ava to re do the chip in there, so it dont det, or just retard the ign.

rapidcossie

when you say its the cooler Jam, do you mean it not flowing enough at the top?

SafeChav

Thing is you're running 214bhp on MFI, have you got a 5th injector yet?

Fiecos Dan

ps, i dont think its a cooler issue, is more likely due to turbo/boost control issue for boost peaking higher, but down to too much spark for boost = the detting.

Rick

Its not a cooling issue. You simply have too much ign advance at that point. This is the biggest limitation of Mfi - not the fuelling. AVA may have the facilities to remap the Motorolla Processor to be able to pull that load site back.

Eboost and AVCR can map ur boost.

JamboRS

rapidcossie alan has tested my cooler last year for the pressure drop and it was 6psi or thereabouts,he's says with a more efficient coller(either theres or rs500) then i would see more boost top end as it wont lose as much

SafeChav no 5th injector,ava dont believe in them,ive had my metering head modded and runnin 2 pumps,fuel isnt the issue,it could hold 19-20psi top end but then the mid peaks to high

fiecos dan and rick cheers for the input,ill look into it

Fiecos Dan

a good inter will see 1-2 psi pressure drop.

SafeChav

see the thing is though, i know AVA are tuning company and probably know a damn sight more than i do, but you can only take MFI so far until it runs out of fuelling, and you also end up running too rich low down once you go past a certain point.

Still not convinced about this 2 fuel pump thing either.....its the metering head thats the limitation, not the pump Additional to the fact 2 pumps ARE FUCKING RAPING your relay

Rick knows his stuff though so i would look into that personally

JamboRS

theres several of AVA cars running 2 fuel pumps with no hastles,green shed ran 2 pumps,alan knows more about rs turbo's than prob any other tuner out there,he built a turbocharged cvh before ford even had the plans for it,he's been there done that so no one can question alans knowledge,if karl norris or stu used 2 fuel pumps on any of there cars they done then im afraid people on this board would have a completely different attitude towards it
also both my pumps are wired to seperate relays so theres just the same demand from the relay as it would be from one pump
if i used my car as an everyday car then the low down richness would be a concern but i dont,alans knows that when i drive it its driven hard so why compromise top end fuelling for low down when im very rarely in cruise mode
i dont want this to turn into another tuner wars post,im greatful for rick safechav and fiecos dans input,ill take it on board and talk it thru with alan and see what we can do,i just feel that im not really gettin the best from my set up as it is and could prob see good gains with holding a couple of psi more top end
cheers

SafeChav

Of course it won't turn into a tuner wars post, as i say AVA are going to know a damn sight more than i do, was just saying my general thoughts on it.

Didn't know your pumps had seperate relays so thats fair enough i guess

JamboRS

yeah mate mind i thought i was gettin hastle with it,so got another relay wired in to eliminate things,turned out my prob was 2 litres of oil in the cooler