jrbollman

Looking for my best fuel injector upgrade options for a stock 96 LT4.

Thanks

antfarmer2

Cal Jon at FIC fuel injector connection best injector at the best price.

aklim

How are we defining "best"? Jon's injectors aren't going to give you any more power than it would have had with perfectly functioning injectors.

jrbollman

Looking for an upgrade in power over stock LT4.

Looking at Bosch type 3 4-hole upgrade injectors. At LT4 fuel pressure of 43.5psi, they should flow 36lb/hr. Any other suggestions for injectors or for other mods to the fuel system?

kg4fku

I have no idea what injectors are best.

Just wanted to say how good it is to see not only another C4 in Maine but another 96 CE LT4 Convertible.

Kevova

Although I have not been shopping for injectors yet. If I were: I would look for injectors the can handle high levels of ethanol. There has been some discussion about moving towards E15 or higher. The older injectors weren't intended for E10 but will tolerate it, some better than others. Injector size will be dependent on what other mods do you have or plan on doing.

jrbollman

Yep... it's great to be here it is a beautiful state. Just moved in from California, brought the CE with me. Where are you located in Maine? It's always great to find another one of these great cars.

jrbollman

Current mods... High Flow MAF, Open Air Box with K&N filter, HyperTech programmed OBDII, Stock dual 2 1/2" Cats with resonate chamber replaced with cross pipe and two chamber Flow Master mufflers.

I would like to retain the stock fuel pump/regulator but am open to modification for good gains in HP with new injectors.

kg4fku

I am in Prospect Harbor.

bjankuski

I just want to make sure I understand what you are after:

-If you are not planning to do any additional mods your current injectors will work fine and there is no power to be had by using larger injectors.

-If you are planning to do additional mods that will need more fuel to support your power goals the 36 lb injectors will be able to support around 575 crankshaft HP, and with a retune will work fine in your car.

What are your end goals?

aklim

Cheap and easy mod? No such thing if you want more power. Injectors won't give you power. You need to do serious work like intake and headers, cam, etc.

New injectors will help if you have Multec injectors or they are clogged partially or just impeading fuel flow

jrbollman

Ok... is that throttle body and headers? Or more serious meaning heads and valve work? I am considering Pro Charger but not looking to drop that kind of dough just yet.

jrbollman

BEAUTIFUL up that way. We are in South Coastal Maine, Biddeford near Kennebunk. Only been as far north as Camden this summer. Planning to get up to Bar Harbor next June with the Vettes of Coastal Maine club for their Bar Harbor Tour and Corvette Show. Maybe we'll see you around.

aklim

When you get blown you would need to have new and different injectors along with the matching cam and intake and headers

DGXR

All these comments are true. Just because an upgraded injector is capable of delivering more fuel than your current injectors, doesn't mean the computer will tell it to deliver more fuel. Any fuel beyond what the engine needs will be more or less wasted fuel, and will create a rich condition which is a problem. The engine only needs a certain amount of fuel for maximum power with the current modifications... you don't need upgraded injectors unless you do more modifications for more airflow through the engine... and even then, your current injectors might work just fine, depending on the mods.

If your current injectors aren't working properly then that's another story... you can get them cleaned, or replace them. But still an upgrade is not necessary right now.

aklim

I'd definitely get it cleaned and tested. When I send them in every few years, there is some build up based on the test results.

If they are Multec, get new ones. Don't throw good money after bad

cv67

You wont make any more power with one name over the other
If new ones make it feel better thats probably the way it was supposed to run in the first place thats all.

Youll have to dig into the motor to get noticeable power.

aklim

Don't discount the placebo effect. Lots of people spend a couple hundred and can feel the huge difference.

tlong

My LT1 '96 benefited from Jon's Bosch III set. Smoother idle, overall great performance and immune to ethanol. The word from him and others was that higher flow would not produce more HP.

I agree that the upgrade will be driveability, not power. To me well worth the money and you can't find a better vendor.

aklim

Common sense would dictate it cannot since FI would adjust the pulse width to accommodate (within reason)the extra fuel which is why we have FI in the first place. To adjust fuel so we don't just slop something in like we do with a carb.

It will improve drivability but only if the old injectors are clogged or the coils are shot. If you use pure fuel with a stock brand new Multec injector and a Bosch 3 or 4 or whatever, X pph is still X pph and nothing will differ. I know my injectors pick up varnish over a few years so using a reconditioned set or new set will improve it only because there is something wrong.