My Mechanic peiced together a kit for me and installed it. Basically I have Hks Cast Manifold, Custom exhaust and down pipe, Turboneticts 62-1, Hks external Waste Gate, Greddy BOV, Greddy Fmic (3row), PFC, Cosmo Fuel pump, Fuel Regulators, Upgraded injectors. My Question is for my injectors. He only upgraded my primarys to 850. So now i am running 850 all around. Is this ok? He said its fine but now i am not sure. I am going for a tunning session steve kan and i wanted to make sure its possible to tune it correctly with the 850 injectors.

 

that's not alot of fuel for a 62-1...I don't even think you can get the turbo into the sweet spot.

I'd say 10-14psi max (14psi might be pushing it)

 

my mate has 900's he ran out of flow @ around 350rwhp @ 18psi.

62-1 should do 350rwhp @ 12psi if its got a big rear

so... who really knows? i think it should be ok

 

put some 1600cc injectors in secondary's
850x1600 is a good combo

 

www.kgparts.com

Sorry Shamless plug for keith ;-)

Your definetly going to want 1600's in your secondaries. It would be a waste to have steve not turn up the boost b/c your runnign out of fuel. Make sure you got new plugs and fuel filter b4 the tune also.

 

I used stock primary's and indy secondary's and it held 2bar boost fine

 

A rough formula I use for figuring out the fuel is you add up the cc/min and divide by 10 to get the supported RWHP.

so 850 x 4 / 10 = 340 rwhp...

now you can probably squeeze a little more out if you make some adjustments... raising the fuel pressure can help boost that number up by allowing them to flow more gas per millisecond... but after a point, your stock (or even a stock drop-in replacement) pump will be unable to provide fuel at a fast enough rate to keep the pressure up... Since you have an upgraded pump, that probably is good to at least 400-425 rwhp (maybe more?)

Oh and to make a point more relavent to your original question... 4 x 850 will hold back that 62-1... so you should go with 1600s in the secondaries for best results.

 

Any one have any suggestions on which injectors i should get?