I've got a mate who has just built himself a engine using a QED kit, 420 cams, direct to head throttle bodies, DTA management etc...
He is using cream injectors at the mo but he is concerned that the fuelling will not be good enough for around the 220 bhp mark.
My local motorsport man said to stay away from 803's (too fuelly) and he apparently uses Motorsport Reds? whatever they are, I've seen a set of LET yellows for sale but I just though someone on here would have a good recommendation of what to use. I would always trust my Motorsports mates word and I'm sure the Reds are very good but they are also 250 quid so the LET injectors are a cheaper buy and also this a a road car and not a race car.
I've seen a similar specced engine for sale on Mig but it doesn't state what injectors he used, could someone put forward a few ideas, thanks
bosch reds flow the same as 803s
creams should be fine @ 60psi, he could use any injector he likes tho tbh as it will require a remap. get a set of reds on here for about 60 quid or the lets will be good too
similar experience here too - I ran out of available dwell quite quickly - even with the standard cams - SBD claim to get 230bhp @ 55psi out of creams, but I think that's over optimistic. I ended up putting running it at 65psi - far too much really.
at some point in the future I plan to get yellows mapped in.
DTA E48EXP (I assume he has that) should have > 5 Ohm injectors. 803 is a low impedance injector so will break the injector drivers if connected without ballast resistors.
LET injectors would work fine and can be got cheap.
If test pressure is not specified I would take it as 3 bar as this is the normal test pressure.
I think the 304 cc @ 3 bar for LET injectors is the incorrect figure of a couple that are floating about. They flow more than that IIRC. But still they should be more than enough at 3 bar (would rather run them at this as they were designed for it and not 2.5 bar) and will keep DC well in safe limits and give more room if you go for more power in the future.