turborx8

iTrader: (1)

What would be the best fuel injector combo for this turbo?

I plan to do this install myself and was thinking about doing a DIY thread with pics. Does anyone know if this has been done yet?

MazdaManiac

iTrader: (3)

Just replace the P2s with 650cc or larger OE-style injectors.
I've got those if you need them.

turborx8

iTrader: (1)

Interesting. So only the P2's need to be upgraded? Don't I need to move the OEM P2's to the P1's or something.

Brettus

iTrader: (2)

I only have 480cc P2s and find that to be sufficient up to 320ish whp . I know my P1s are close to maxed out so fitting the 380cc yellows that you take from the P2 position to replace the reds would make a lot of sense IMO .

turborx8

iTrader: (1)

I was checking out Fluid Motorsports for prices on injectors and this was on their website.

Examples of different injector setups:

290cc factory primaries
650cc secondaries
380cc P2’s

380cc primaries (factory secondary injector for 6 speed cars)
650cc secondaries
650cc P2’s

650cc primaries
650cc secondaries
650cc P2’s

MazdaManiac

iTrader: (3)

I ran 380/650/750, 380/380/750 and 290/750/750.
I currently run 290/380/900 and it is WAY more fuel than I need for 420+ g/sec or so of air.
290/380/730 is plenty for the BNR setup.

Brettus

iTrader: (2)

/\ how did you find running 380s in the P1 position - any idle issues ?

turborx8

iTrader: (1)

So I should order a pair of 730cc injectors instead of the 650cc?

290cc primaries
380cc secondaries
730cc P2’s

MazdaManiac

iTrader: (3)

Not really. It did seem to run a bit richer in the shifts, but some of that was the VTA BOV.

Go as big as you want in that position, though there is no advantage in putting in more injector than you need.

arghx7

What size are the stock injectors on the 2009's? because I know Mazda went back to 4 injectors.