do i need injectors, fuel pump, AFPR,or tuning? - Tuning Forum

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do i need injectors, fuel pump, AFPR,or tuning?
Friday, September 28, 2007 1:46 PM
i built my LD9 like a lot of u have done but i cant buy the turbo kit til next year cause i just bought a house. So i need it run run good the way it is. my ? is, do i need to buy injectors now, install the fuel pump and AFPR, or tune it to run good? And if i do need injectors, what size do i get? i know ill need them later anyways. here is what i have so far.

LZ stage 2 cams
2.3 HO Intake/Exhaust Valve Springs
Ported exhaust side
Stainless Valves 1mm oversize
Cometic .074" MLS Head Gasket
ARP Head Studs
ARP Main Studs
balanced Wiseco 9.0:1 (.020" over) Pistons w/ Eagle Rods
polished and balanced crank
2.3 Oil Pump Conversion
RSM 62mm T/B
UR Underdrive Pulley
msd fuel pump (not installed)
simmons fuel pressure regulator (not installed)
venom fuel rail
RK Sport Lower and upper Mounts
Spec 8lb Aluminum Flywheel
Spec Stage 3 Clutch
bills/stans header and cat back

Re: do i need injectors, fuel pump, AFPR,or tuning?
Saturday, September 29, 2007 3:25 PM
I would drive it on the stock ecu with the stock components. Really shouldn't be too too different. Im running my car n/a with the stuff you listed and more with no problems. But it's just gonna be a dog down low with that cr and thick hg



Blew it up, build numbers coming soon
Re: do i need injectors, fuel pump, AFPR,or tuning?
Sunday, September 30, 2007 12:49 AM
would tuning be a waste of time and money or would it help with anything? someone here said you can tune a bone stock engine and have gains. im not wanting to get alot of power out of it yet, i just really want it to run perfect and be reliable right now cause i am not sure when i will boost.
Re: do i need injectors, fuel pump, AFPR,or tuning?
Sunday, October 07, 2007 4:28 PM
Do you actually have all the parts you mentioned or are you planning on getting them? I'm asking because, if you have a 62mm throttlebody and youv'e lowered your compression with pistons and a thicker headgasket, you WOULD benefit from tuning right now. Not necessarily with performance, but you may see an improvement in drivability by tuning.

What are you planning to buy to tune your car? HPT, Megasquirt, EFI live, or.......Whatever you choose, buy it NOW and get used to the software. It takes awhile to get good a tuning.

Also, I have HPT and 750cc injectors, my car runs perfect, TUNED.
Re: do i need injectors, fuel pump, AFPR,or tuning?
Tuesday, October 09, 2007 12:15 AM
i have all these parts ready to go, im just waiting for my engine to come back from the shop (hopefully this week). i just dont plan on putting on fuel pump or AFPR on til i get injectors. i was going to wait til i got the turbo kit unless i need to get them now then i will buy them. And ill get HPT asap so i can get the hang of it. thanks
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