Just before I post a wanted advert for 2 additional 850\'s, would anyone know if 4x850cc injectors will be good for this setup (which I will be stopping at ;) :D)
Stock Twins
Stock Engine
Stock Boost
Full Decat
Apexi Twin Filters
(550ccx2 & 850ccx2 Is fine for above but I want to add the next 3)
Hard Pipes
Greddy SMIC
Water Injection (50% Meth & Mapped for)
Hi Ricco,
From what ive read a lot of people run that fuelling set-up with no probs (occasional probs on idle/low end with not being able to run low enough duty, but nothing major), are you going to be uprating the pump aswell think that might be a neccesity. *edit sorry think ive misread, as you replacing primaries with 850\'s or getting an extra 2 850cc injectors *
My question is are you going to need the extra fuelling? If your adding 50% meth mix and mapping for it im guessing your going to be dialling back on the fuel a bit as your replacing with meth.
I only say this as you say your staying at stock boost levels, without the extra boost not sure if you\'ll need the extra fuel
Good point\'s indeed.
I was origionally going to get 1600\'s with all the trimmings but a bit schetchy on the job front so needed to decide on my spec rather than do the whole hog & not need it. So therefore I will be potentially using 4x850cc.
I would like to avoid any issues with the idle - what are people\'s expeariences of this? :confused:
Ideally I would like to stay at 0.8bar (reliable thingy going on?) and have the WI come in at 0.7bar & probablly using a 4m jet just after intercooler.
Fuel pump wise I had forgotton about that! :Hammer again ideally I would like to have uprated pump and fuel pressure regulator - do both or any of these need to be done - if it means it\'s just better or reliable then it\'s a yes, I need them too! :D
Thank you for the reply! :cheers
For a stock car you dont need that much fueling even if your adding those mods. I have 300+ rwhp & im still running stock fueling my injectors are at 96% @ 6300rpm in 1st and 2nd gears so you should be fine with stock.
Yanks are managing 350rwhp on stock fueling with sh!tty 93ron fuel!
I have the 4 850s in mine and have very similar mods to you, boost is running at 0.9 bar and all good.
Although very rich when idling so need to get that leaned out a bit. People in the car parks are complaining lol
Uprated fuel pump should be fine without the regulator.
I\'m running a 280ltr p/h Sard pump
Similar setup to you (but without WI), stock primaries and 850cc secondaries
Ah cool, all good then :Thumbs-up - Im considering running at 1 bar and adding a boost controller so will probably get the 850\'s.
Do I need a bigger fuel pump to cope with this?
Yes you should get a uprated fuel pump, a GTR pump apexi or tomei should be good.not the Bosch as will need swirl pot.
4 X 850cc will be fine for 1bar
The GTR pump - would that be the BNR33 one?
Concerned about noisy pumps, been told that Bosch ones are quite noisy?
Any reccomendations on that front? Good reliable, caple pumps but quiet.
Dont ask too much do I! :King
Hmm, I dont have an uprated fuel pump or FPR and the car copes with the fueling.
Although it is rich lol !!!
Currently run mine at 0.9 bar and it flies !!!!