Which injectors are right for me?

archerytech1 · Jul 12, 2011

Just looking for a few guru's opinions about a few things here.....Here is my cars stats.............91 Gt. 5 spd, 5500 miles on engine. Add-ons are: BBK Headers, BBK Cold air intake, K&N, Flow Masters, E303 Cam, King Cobra clutch, 3:73 Gears, MSD coil, Just purchased Twin turbo set up. Now what I'm wondering is since I am installing the twins and WILL NOT be going over 7 lbs boost what do you turbo experienced guys think is a good starting point for injector size/ Fuel pump size/ and any other major things to consider like Mass air or anything? Just looking for a good starting point that should be close to what I will need for her to run right.... Any advice will be much appreciated. Thank you.....Shane

archerytech1 · Jul 13, 2011

hmm

bump

lancec2c30 · Jul 13, 2011

If you're still running stock heads and intake. You should have no fuel problems with a set of 42lb/hr's and a 255 in tank pump.

My t70 @ 10lbs on a stock long block only ran ~65% duty cycle on my 42's.

90lxcoupe · Jul 13, 2011

What size turbos? I'd say 30# would be plenty if you are really gonna keep the boost down

lancec2c30 · Jul 13, 2011

They're prolly some internally wastegated ~50mm eBay twins.

f8tlfiveo · Jul 13, 2011

How do you plan to tune the car? If you get a quarterhorse or similar setup you can use 80lb injectors and just use the software to change highslope, lowslope, breakpoint and all the other good stuff. Then if you ever decide to put more boost in her you will already have the injectors.

lancec2c30 · Jul 13, 2011

That's not a very good idea at all. I don't see a situation where a stock block will support the power to require 80lb injectors.
Then the fact remains that driveability is going to suffer with an injector that big. As well as the ability to tune it with little experience using the moates or tweecer.

f8tlfiveo · Jul 13, 2011

lancec2c30 said:
That's not a very good idea at all. I don't see a situation where a stock block will support the power to require 80lb injectors.
Then the fact remains that driveability is going to suffer with an injector that big. As well as the ability to tune it with little experience using the moates or tweecer.

Drivability will not suffer. It just needs to be tuned properly. I know a handful of people that have done this with great drivability.yes your right a stock block wouldn't be able to handle the power that a injector that size could deliver..I said down the road if you wanted to run more boost or a different setup you would have enough injector to handle it. Why buy the same part several times if you don't have to is all I am sayin. I am building a twin turbo setup for mine and that's exactly what I have been encouraged to do from my tuner.

Kdubslugga · Jul 13, 2011

42# minimun

archerytech1 · Jul 13, 2011

They are 50 mm t3/t4's but Are not internaly wastegated ebay turbos. And I really appreciate the replies guys. I realize that this may or may not be a little backwards but long term the only other addons that will happen are a good set of heads and an intake... Ive been looking at the trick flow twisted wedge 170's. As far as a decent intake Im open for experienced suggestions.........................So it sounds like 42's and a 255 lph so far with my current and future plans right? Oh and I will not push anymore than 7.4 psi through the stock block. Anymore I see as too risky.. With the wastegates I have I could push 7.4-20 psi......55-1.0 bars on them

Which injectors are right for me?

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Which injectors are right for me?

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